rl-2003: release date

(cherry picked from commit 6380be302a)

.editorconfig

@@ -1,5 +1,5 @@
 # EditorConfig configuration for nixpkgs
-# https://EditorConfig.org
+# http://EditorConfig.org
 
 # Top-most EditorConfig file
 root = true
@@ -11,108 +11,18 @@ insert_final_newline = true
 trim_trailing_whitespace = true
 charset = utf-8
 
-# Ignore diffs/patches
-[*.{diff,patch}]
-end_of_line = unset
-insert_final_newline = unset
-trim_trailing_whitespace = unset
-
-# We want readFile .version to return the version without a newline.
-[.version]
-insert_final_newline = false
-
 # see https://nixos.org/nixpkgs/manual/#chap-conventions
 
-# Match json/lockfiles/markdown/nix/perl/python/ruby/shell/docbook files, set indent to spaces
-[*.{json,lock,md,nix,pl,pm,py,rb,sh,xml}]
+# Match nix/ruby/docbook files, set indent to spaces with width of two
+[*.{nix,rb,xml}]
 indent_style = space
-
-# Match docbook files, set indent width of one
-[*.xml]
-indent_size = 1
-
-# Match json/lockfiles/markdown/nix/ruby files, set indent width of two
-[*.{json,lock,md,nix,rb}]
 indent_size = 2
 
-# Match perl/python/shell scripts, set indent width of four
-[*.{pl,pm,py,sh}]
+# Match shell/python/perl scripts, set indent to spaces with width of four
+[*.{sh,py,pl}]
+indent_style = space
 indent_size = 4
 
-# Match gemfiles, set indent to spaces with width of two
-[Gemfile]
-indent_size = 2
-indent_style = space
-
-# Disable file types or individual files
-# some of these files may be auto-generated and/or require significant changes
-
-[*.{c,h}]
-insert_final_newline = unset
-trim_trailing_whitespace = unset
-
-[*.{asc,key,ovpn}]
-insert_final_newline = unset
-end_of_line = unset
-trim_trailing_whitespace = unset
-
-[*.lock]
-indent_size = unset
-
-# Although Markdown/CommonMark allows using two trailing spaces to denote
-# a hard line break, we do not use that feature in nixpkgs since
-# it forces the surrounding paragraph to become a <literallayout> which
-# does not wrap reasonably.
-# Instead of a hard line break, start a new paragraph by inserting a blank line.
-[*.md]
-trim_trailing_whitespace = true
-
-# binaries
-[*.nib]
-end_of_line = unset
-insert_final_newline = unset
-trim_trailing_whitespace = unset
-charset = unset
-
-[eggs.nix]
-trim_trailing_whitespace = unset
-
-[nixos/modules/services/networking/ircd-hybrid/*.{conf,in}]
-trim_trailing_whitespace = unset
-
-[pkgs/build-support/dotnetenv/Wrapper/**]
-end_of_line = unset
-indent_style = unset
-insert_final_newline = unset
-trim_trailing_whitespace = unset
-
-[pkgs/development/compilers/elm/registry.dat]
-end_of_line = unset
-insert_final_newline = unset
-
-[pkgs/development/haskell-modules/hackage-packages.nix]
-indent_style = unset
-trim_trailing_whitespace = unset
-
-[pkgs/misc/documentation-highlighter/**]
-insert_final_newline = unset
-
-[pkgs/servers/dict/wordnet_structures.py]
-trim_trailing_whitespace = unset
-
-[pkgs/tools/misc/timidity/timidity.cfg]
-trim_trailing_whitespace = unset
-
-[pkgs/tools/virtualization/ovftool/*.ova]
-end_of_line = unset
-insert_final_newline = unset
-trim_trailing_whitespace = unset
-charset = unset
-
-[lib/tests/*.plist]
-indent_style = tab
-insert_final_newline = unset
-
-[pkgs/kde/generated/**]
-insert_final_newline = unset
-end_of_line = unset
+# Match diffs, avoid to trim trailing whitespace
+[*.{diff,patch}]
+trim_trailing_whitespace = false

.git-blame-ignore-revs

@@ -1,158 +0,0 @@
-# This file contains a list of commits that are not likely what you
-# are looking for in a blame, such as mass reformatting or renaming.
-# You can set this file as a default ignore file for blame by running
-# the following command.
-#
-# $ git config blame.ignoreRevsFile .git-blame-ignore-revs
-#
-# To temporarily not use this file add
-# --ignore-revs-file=""
-# to your blame command.
-#
-# The ignoreRevsFile can't be set globally due to blame failing if the file isn't present.
-# To not have to set the option in every repository it is needed in,
-# save the following script in your path with the name "git-bblame"
-# now you can run
-# $ git bblame $FILE
-# to use the .git-blame-ignore-revs file if it is present.
-#
-# #!/usr/bin/env bash
-# repo_root=$(git rev-parse --show-toplevel)
-# if [[ -e $repo_root/.git-blame-ignore-revs ]]; then
-#     git blame --ignore-revs-file="$repo_root/.git-blame-ignore-revs" $@
-# else
-#     git blame $@
-# fi
-
-
-# nixos/modules/rename: Sort alphabetically
-1f71224fe86605ef4cd23ed327b3da7882dad382
-
-# manual: fix typos
-feddd5e7f8c6f8167b48a077fa2a5394dc008999
-
-# nixos: fix module paths in rename.nix
-d08ede042b74b8199dc748323768227b88efcf7c
-
-# fix indentation in mk-python-derivation.nix
-d1c1a0c656ccd8bd3b25d3c4287f2d075faf3cf3
-
-# fix indentation in meteor default.nix
-a37a6de881ec4c6708e6b88fd16256bbc7f26bbd
-
-# treewide: automatically md-convert option descriptions
-2e751c0772b9d48ff6923569adfa661b030ab6a2
-
-# nixos/*: automatically convert option docs
-087472b1e5230ffc8ba642b1e4f9218adf4634a2
-
-# nixos/*: automatically convert option descriptions
-ef176dcf7e76c3639571d7c6051246c8fbadf12a
-
-# nixos/*: automatically convert option docs to MD
-61e93df1891972bae3e0c97a477bd44e8a477aa0
-
-# nixos/*: convert options with admonitions to MD
-722b99bc0eb57711c0498a86a3f55e6c69cdb05f
-
-# nixos/*: automatically convert option docs
-6039648c50c7c0858b5e506c6298773a98e0f066
-
-# nixos/*: md-convert options with unordered lists
-c915b915b5e466a0b0b2af2906cd4d2380b8a1de
-
-# nixos/*: convert options with listings
-f2ea09ecbe1fa1da32eaa6e036d64ac324a2986f
-
-# nixos/*: convert straggler options to MD
-1d41cff3dc4c8f37bb5841f51fcbff705e169178
-
-# nixos/*: normalize manpage references to single-line form
-423545fe4865d126e86721ba30da116e29c65004
-
-# nixos/documentation: split options doc build
-fc614c37c653637e5475a0b0a987489b4d1f351d
-
-# nixos/*: convert options with admonitions to MD
-722b99bc0eb57711c0498a86a3f55e6c69cdb05f
-
-# nixos/*: convert internal option descriptions to MD
-9547123258f69efd92b54763051d6dc7f3bfcaca
-
-# nixos/*: replace </para><para> with double linebreaks
-694d5b19d30bf66687b42fb77f43ea7cd1002a62
-
-# treewide: add defaultText for options with simple interpolation defaults
-fb0e5be84331188a69b3edd31679ca6576edb75a
-
-# nixos/*: mark pre-existing markdown descriptions as mdDoc
-7e7d68a250f75678451cd44f8c3d585bf750461e
-
-# nixos/*: normalize link format
-3aebb4a2be8821a6d8a695f0908d8567dc00de31
-
-# nixos/*: replace <code> in option docs with <literal>
-16102dce2fbad670bd47dd75c860a8daa5fe47ad
-
-# nixos/*: add trivial defaultText for options with simple defaults
-25124556397ba17bfd70297000270de1e6523b0a
-
-# systemd: rewrite comments
-92dfeb7b3dab820ae307c56c216d175c69ee93cd
-
-# systemd: break too long lines of Nix code
-67643f8ec84bef1482204709073e417c9f07eb87
-
-# {pkgs/development/cuda-modules,pkgs/test/cuda,pkgs/top-level/cuda-packages.nix}: reformat all CUDA files with nixfmt-rfc-style 2023-03-01
-802a1b4d3338f24cbc4efd704616654456d75a94
-
-# postgresql: move packages.nix to ext/default.nix
-719034f6f6749d624faa28dff259309fc0e3e730
-
-# php ecosystem: reformat with nixfmt-rfc-style
-75ae7621330ff8db944ce4dff4374e182d5d151f
-c759efa5e7f825913f9a69ef20f025f50f56dc4d
-
-# pkgs/os-specific/bsd: Reformat with nixfmt-rfc-style 2024-03-01
-3fe3b055adfc020e6a923c466b6bcd978a13069a
-
-# k3s: format with nixfmt-rfc-style
-6cfcd3c75428ede517bc6b15a353d704837a2830
-
-# python3Packages: format with nixfmt
-59b1aef59071cae6e87859dc65de973d2cc595c0
-
-# treewide description changes (#317959)
-bf995e3641950f4183c1dd9010349263dfa0123b
-755b915a158c9d588f08e9b08da9f7f3422070cc
-f8c4a98e8e138e21353a2c33b90db3359f539b37
-
-# vscode-extensions.*: format with nixfmt (RFC 166)
-7bf9febfa6271012b1ef86647a3a06f06875fdcf
-
-# remove uses of mdDoc (#303841)
-1a24330f792c8625746d07d842290e6fd95ae6f9
-acd0e3898feb321cb9a71a0fd376f1157d0f4553
-1b28414d2886c57343864326dbb745a634d3e37d
-6afb255d976f85f3359e4929abd6f5149c323a02
-
-# azure-cli: move to by-name, nixfmt #325950
-96cd538b68bd1d0a0a37979356d669abbba32ebc
-
-# poptracker: format with nixfmt-rfc-style (#326697)
-ff5c8f6cc3d1f2e017e86d50965c14b71f00567b
-
-# mangal: format with nixfmt-rfc-style #328284
-3bb5e993cac3a6e1c3056d2bc9bf43eb2c7a5951
-
-# pico-sdk: switch to finalAttrs (#329438)
-8946018b0391ae594d167f1e58497b18de068968
-
-# ollama: format with nixfmt-rfc-style (#329353)
-bdfde18037f8d9f9b641a4016c8ada4dc4cbf856
-
-# nixos/ollama: format with nixfmt-rfc-style (#329561)
-246d1ee533810ac1946d863bbd9de9b525818d56
-
-# nixos/nvidia: apply nixfmt-rfc-style (#313440)
-fbdcdde04a7caa007e825a8b822c75fab9adb2d6

.gitattributes

@@ -1,6 +1,4 @@
 **/deps.nix linguist-generated
-**/deps.json linguist-generated
-**/deps.toml linguist-generated
 **/node-packages.nix linguist-generated
 
 pkgs/applications/editors/emacs-modes/*-generated.nix linguist-generated

.github/CODEOWNERS

@@ -6,201 +6,121 @@
 #
 # For documentation on this file, see https://help.github.com/articles/about-codeowners/
 # Mentioned users will get code review requests.
-#
-# IMPORTANT NOTE: in order to actually get pinged, commit access is required.
-# This also holds true for GitHub teams. Since almost none of our teams have write
-# permissions, you need to list all members of the team with commit access individually.
 
-# CI
-/.github/workflows @NixOS/Security @Mic92 @zowoq
-/.github/workflows/check-nix-format.yml @infinisil
-/ci @infinisil @NixOS/Security
-
-# Develompent support
-/.editorconfig @Mic92 @zowoq
-/shell.nix @infinisil @NixOS/Security
+# This file
+/.github/CODEOWNERS @edolstra
 
 # Libraries
-/lib                        @infinisil
-/lib/systems                @alyssais @ericson2314
-/lib/generators.nix         @infinisil @Profpatsch
-/lib/cli.nix                @infinisil @Profpatsch
-/lib/debug.nix              @infinisil @Profpatsch
-/lib/asserts.nix            @infinisil @Profpatsch
-/lib/path.*                 @infinisil
-/lib/fileset                @infinisil
-## Libraries / Module system
-/lib/modules.nix            @infinisil @roberth
-/lib/types.nix              @infinisil @roberth
-/lib/options.nix            @infinisil @roberth
-/lib/tests/modules.sh       @infinisil @roberth
-/lib/tests/modules          @infinisil @roberth
+/lib                        @edolstra @nbp @infinisil
+/lib/systems                @nbp @ericson2314 @matthewbauer
+/lib/generators.nix         @edolstra @nbp @Profpatsch
+/lib/cli.nix                @edolstra @nbp @Profpatsch
+/lib/debug.nix              @edolstra @nbp @Profpatsch
+/lib/asserts.nix            @edolstra @nbp @Profpatsch
 
 # Nixpkgs Internals
-/default.nix                                     @Ericson2314
-/pkgs/top-level/default.nix                      @Ericson2314
-/pkgs/top-level/impure.nix                       @Ericson2314
-/pkgs/top-level/stage.nix                        @Ericson2314
-/pkgs/top-level/splice.nix                       @Ericson2314
-/pkgs/top-level/release-cross.nix                @Ericson2314
-/pkgs/stdenv/generic                             @Ericson2314
-/pkgs/stdenv/generic/check-meta.nix              @Ericson2314
-/pkgs/stdenv/cross                               @Ericson2314
-/pkgs/build-support/cc-wrapper                   @Ericson2314
-/pkgs/build-support/bintools-wrapper             @Ericson2314
-/pkgs/build-support/setup-hooks                  @Ericson2314
-/pkgs/build-support/setup-hooks/auto-patchelf.sh @layus
-/pkgs/build-support/setup-hooks/auto-patchelf.py @layus
-/pkgs/pkgs-lib                                   @infinisil
-## Format generators/serializers
-/pkgs/pkgs-lib/formats/libconfig                 @h7x4
-/pkgs/pkgs-lib/formats/hocon                     @h7x4
-
-# pkgs/by-name
-/pkgs/test/check-by-name @infinisil
-/pkgs/by-name/README.md @infinisil
-/pkgs/top-level/by-name-overlay.nix @infinisil
-/.github/workflows/check-by-name.yml @infinisil
-
-# Nixpkgs build-support
-/pkgs/build-support/writers @lassulus @Profpatsch
-
-# Nixpkgs make-disk-image
-/doc/build-helpers/images/makediskimage.section.md  @raitobezarius
-/nixos/lib/make-disk-image.nix                 @raitobezarius
-
-# Nix, the package manager
-# @raitobezarius is not "code owner", but is listed here to be notified of changes
-# pertaining to the Nix package manager.
-# i.e. no authority over those files.
-pkgs/tools/package-management/nix/                    @raitobezarius
-nixos/modules/installer/tools/nix-fallback-paths.nix  @raitobezarius
-
-# Nixpkgs documentation
-/maintainers/scripts/db-to-md.sh @jtojnar @ryantm
-/maintainers/scripts/doc @jtojnar @ryantm
-
-# Contributor documentation
-/CONTRIBUTING.md @infinisil
-/.github/PULL_REQUEST_TEMPLATE.md @infinisil
-/doc/contributing/ @infinisil
-/doc/contributing/contributing-to-documentation.chapter.md @jtojnar @infinisil
-/lib/README.md @infinisil
-/doc/README.md @infinisil
-/nixos/README.md @infinisil
-/pkgs/README.md @infinisil
-/maintainers/README.md @infinisil
-
-# User-facing development documentation
-/doc/development.md @infinisil
-/doc/development @infinisil
+/default.nix                          @nbp
+/pkgs/top-level/default.nix           @nbp @Ericson2314
+/pkgs/top-level/impure.nix            @nbp @Ericson2314
+/pkgs/top-level/stage.nix             @nbp @Ericson2314 @matthewbauer
+/pkgs/top-level/splice.nix            @Ericson2314 @matthewbauer
+/pkgs/top-level/release-cross.nix     @Ericson2314 @matthewbauer
+/pkgs/stdenv/generic                  @Ericson2314 @matthewbauer
+/pkgs/stdenv/cross                    @Ericson2314 @matthewbauer
+/pkgs/build-support/cc-wrapper        @Ericson2314 @orivej
+/pkgs/build-support/bintools-wrapper  @Ericson2314 @orivej
+/pkgs/build-support/setup-hooks       @Ericson2314
 
 # NixOS Internals
-/nixos/default.nix                                    @infinisil
-/nixos/lib/from-env.nix                               @infinisil
-/nixos/lib/eval-config.nix                            @infinisil
-/nixos/modules/system/activation/bootspec.nix         @grahamc @cole-h @raitobezarius
-/nixos/modules/system/activation/bootspec.cue         @grahamc @cole-h @raitobezarius
+/nixos/default.nix          @nbp @infinisil
+/nixos/lib/from-env.nix     @nbp @infinisil
+/nixos/lib/eval-config.nix  @nbp @infinisil
+/nixos/doc/manual/configuration/abstractions.xml      @nbp
+/nixos/doc/manual/configuration/config-file.xml       @nbp
+/nixos/doc/manual/configuration/config-syntax.xml     @nbp
+/nixos/doc/manual/configuration/modularity.xml        @nbp
+/nixos/doc/manual/development/assertions.xml          @nbp
+/nixos/doc/manual/development/meta-attributes.xml     @nbp
+/nixos/doc/manual/development/option-declarations.xml @nbp
+/nixos/doc/manual/development/option-def.xml          @nbp
+/nixos/doc/manual/development/option-types.xml        @nbp
+/nixos/doc/manual/development/replace-modules.xml     @nbp
+/nixos/doc/manual/development/writing-modules.xml     @nbp
+/nixos/doc/manual/man-nixos-option.xml                @nbp
+/nixos/modules/installer/tools/nixos-option.sh        @nbp
 
 # NixOS integration test driver
 /nixos/lib/test-driver  @tfc
 
-# NixOS QEMU virtualisation
-/nixos/virtualisation/qemu-vm.nix           @raitobezarius
-
-# ACME
-/nixos/modules/security/acme                @arianvp @flokli @aanderse # no merge permission: @m1cr0man @emilazy
-
-# Systemd
-/nixos/modules/system/boot/systemd.nix      @NixOS/systemd
-/nixos/modules/system/boot/systemd          @NixOS/systemd
-/nixos/lib/systemd-*.nix                    @NixOS/systemd
-/pkgs/os-specific/linux/systemd             @NixOS/systemd
-
-# Systemd-boot
-/nixos/modules/system/boot/loader/systemd-boot      @JulienMalka
-
-# Images and installer media
-/nixos/modules/installer/cd-dvd/
-/nixos/modules/installer/sd-card/
-
-# Updaters
-## update.nix
-/maintainers/scripts/update.nix   @jtojnar
-/maintainers/scripts/update.py    @jtojnar
-## common-updater-scripts
-/pkgs/common-updater/scripts/update-source-version    @jtojnar
+# New NixOS modules
+/nixos/modules/module-list.nix @Infinisil
 
 # Python-related code and docs
-/doc/languages-frameworks/python.section.md   @mweinelt @natsukium
-/maintainers/scripts/update-python-libraries            @natsukium
-/pkgs/development/interpreters/python                   @natsukium
-/pkgs/top-level/python-packages.nix                     @natsukium
-/pkgs/top-level/release-python.nix                      @natsukium
+/maintainers/scripts/update-python-libraries	@FRidh
+/pkgs/top-level/python-packages.nix     @FRidh @jonringer
+/pkgs/development/interpreters/python   @FRidh
+/pkgs/development/python-modules        @FRidh @jonringer
+/doc/languages-frameworks/python.section.md     @FRidh
 
 # Haskell
-/doc/languages-frameworks/haskell.section.md  @sternenseemann @maralorn @ncfavier
-/maintainers/scripts/haskell                  @sternenseemann @maralorn @ncfavier
-/pkgs/development/compilers/ghc               @sternenseemann @maralorn @ncfavier
-/pkgs/development/haskell-modules             @sternenseemann @maralorn @ncfavier
-/pkgs/test/haskell                            @sternenseemann @maralorn @ncfavier
-/pkgs/top-level/release-haskell.nix           @sternenseemann @maralorn @ncfavier
-/pkgs/top-level/haskell-packages.nix          @sternenseemann @maralorn @ncfavier
+/pkgs/development/compilers/ghc                       @basvandijk @cdepillabout
+/pkgs/development/haskell-modules                     @basvandijk @cdepillabout @infinisil
+/pkgs/development/haskell-modules/default.nix         @basvandijk @cdepillabout
+/pkgs/development/haskell-modules/generic-builder.nix @basvandijk @cdepillabout
+/pkgs/development/haskell-modules/hoogle.nix          @basvandijk @cdepillabout
 
 # Perl
-/pkgs/development/interpreters/perl @stigtsp @zakame @marcusramberg
-/pkgs/top-level/perl-packages.nix   @stigtsp @zakame @marcusramberg
-/pkgs/development/perl-modules      @stigtsp @zakame @marcusramberg
+/pkgs/development/interpreters/perl @volth
+/pkgs/top-level/perl-packages.nix   @volth
+/pkgs/development/perl-modules      @volth
 
 # R
-/pkgs/applications/science/math/R   @jbedo
-/pkgs/development/r-modules         @jbedo
+/pkgs/applications/science/math/R   @peti
+/pkgs/development/r-modules         @peti
+
+# Ruby
+/pkgs/development/interpreters/ruby @alyssais @zimbatm
+/pkgs/development/ruby-modules      @alyssais @zimbatm
 
 # Rust
-/pkgs/development/compilers/rust @Mic92 @zowoq @winterqt @figsoda
-/pkgs/build-support/rust @zowoq @winterqt @figsoda
-/doc/languages-frameworks/rust.section.md @zowoq @winterqt @figsoda
+/pkgs/development/compilers/rust @Mic92 @LnL7
+/pkgs/build-support/rust @andir
+
+# Darwin-related
+/pkgs/stdenv/darwin         @NixOS/darwin-maintainers
+/pkgs/os-specific/darwin    @NixOS/darwin-maintainers
 
 # C compilers
-/pkgs/development/compilers/gcc
-/pkgs/development/compilers/llvm @RossComputerGuy
-/pkgs/development/compilers/emscripten @raitobezarius
-/doc/languages-frameworks/emscripten.section.md @raitobezarius
+/pkgs/development/compilers/gcc @matthewbauer
+/pkgs/development/compilers/llvm @matthewbauer
 
-# Audio
-/nixos/modules/services/audio/botamusique.nix @mweinelt
-/nixos/modules/services/audio/snapserver.nix @mweinelt
-/nixos/tests/modules/services/audio/botamusique.nix @mweinelt
-/nixos/tests/snapcast.nix @mweinelt
+# Compatibility stuff
+/pkgs/top-level/unix-tools.nix @matthewbauer
+/pkgs/development/tools/xcbuild @matthewbauer
 
-# Browsers
-/pkgs/applications/networking/browsers/firefox @mweinelt
-/pkgs/applications/networking/browsers/chromium @emilylange
-/nixos/tests/chromium.nix @emilylange
-
-# Certificate Authorities
-pkgs/data/misc/cacert/ @ajs124 @lukegb @mweinelt
-pkgs/development/libraries/nss/ @ajs124 @lukegb @mweinelt
-pkgs/development/python-modules/buildcatrust/ @ajs124 @lukegb @mweinelt
+# Beam-related (Erlang, Elixir, LFE, etc)
+/pkgs/development/beam-modules                  @gleber
+/pkgs/development/interpreters/erlang           @gleber
+/pkgs/development/interpreters/lfe              @gleber
+/pkgs/development/interpreters/elixir           @gleber
+/pkgs/development/tools/build-managers/rebar    @gleber
+/pkgs/development/tools/build-managers/rebar3   @gleber
+/pkgs/development/tools/erlang                  @gleber
 
 # Jetbrains
 /pkgs/applications/editors/jetbrains @edwtjo
 
+# Eclipse
+/pkgs/applications/editors/eclipse @rycee
+
 # Licenses
 /lib/licenses.nix @alyssais
 
-# Qt
-/pkgs/development/libraries/qt-5 @K900 @NickCao @SuperSandro2000 @ttuegel
-/pkgs/development/libraries/qt-6 @K900 @NickCao @SuperSandro2000 @ttuegel
-
-# KDE / Plasma 5
-/pkgs/applications/kde @K900 @NickCao @SuperSandro2000 @ttuegel
-/pkgs/desktops/plasma-5 @K900 @NickCao @SuperSandro2000 @ttuegel
-/pkgs/development/libraries/kde-frameworks @K900 @NickCao @SuperSandro2000 @ttuegel
-
-# KDE / Plasma 6
-/pkgs/kde @K900 @NickCao @SuperSandro2000 @ttuegel
-/maintainers/scripts/kde @K900 @NickCao @SuperSandro2000 @ttuegel
+# Qt / KDE
+/pkgs/applications/kde @ttuegel
+/pkgs/desktops/plasma-5 @ttuegel
+/pkgs/development/libraries/kde-frameworks @ttuegel
+/pkgs/development/libraries/qt-5 @ttuegel
 
 # PostgreSQL and related stuff
 /pkgs/servers/sql/postgresql @thoughtpolice
@@ -216,45 +136,21 @@ pkgs/development/python-modules/buildcatrust/ @ajs124 @lukegb @mweinelt
 /nixos/tests/hardened.nix @joachifm
 /pkgs/os-specific/linux/kernel/hardened-config.nix @joachifm
 
-# Home Automation
-/nixos/modules/services/misc/home-assistant.nix @mweinelt
-/nixos/modules/services/misc/zigbee2mqtt.nix @mweinelt
-/nixos/tests/home-assistant.nix @mweinelt
-/nixos/tests/zigbee2mqtt.nix @mweinelt
-/pkgs/servers/home-assistant @mweinelt
-/pkgs/tools/misc/esphome @mweinelt
-
 # Network Time Daemons
 /pkgs/tools/networking/chrony @thoughtpolice
 /pkgs/tools/networking/ntp @thoughtpolice
 /pkgs/tools/networking/openntpd @thoughtpolice
 /nixos/modules/services/networking/ntp @thoughtpolice
 
-# Network
-/pkgs/tools/networking/kea/default.nix @mweinelt
-/pkgs/tools/networking/babeld/default.nix @mweinelt
-/nixos/modules/services/networking/babeld.nix @mweinelt
-/nixos/modules/services/networking/kea.nix @mweinelt
-/nixos/modules/services/networking/knot.nix @mweinelt
-/nixos/modules/services/monitoring/prometheus/exporters/kea.nix @mweinelt
-/nixos/tests/babeld.nix @mweinelt
-/nixos/tests/kea.nix @mweinelt
-/nixos/tests/knot.nix @mweinelt
-
-# Web servers
-/doc/packages/nginx.section.md @raitobezarius
-/pkgs/servers/http/nginx/ @raitobezarius
-/nixos/modules/services/web-servers/nginx/ @raitobezarius
-
 # Dhall
-/pkgs/development/dhall-modules      @Gabriella439 @Profpatsch @ehmry
-/pkgs/development/interpreters/dhall @Gabriella439 @Profpatsch @ehmry
+/pkgs/development/dhall-modules      @Gabriel439 @Profpatsch
+/pkgs/development/interpreters/dhall @Gabriel439 @Profpatsch
 
 # Idris
 /pkgs/development/idris-modules @Infinisil
 
 # Bazel
-/pkgs/development/tools/build-managers/bazel @Profpatsch
+/pkgs/development/tools/build-managers/bazel @mboes @Profpatsch
 
 # NixOS modules for e-mail and dns services
 /nixos/modules/services/mail/mailman.nix    @peti
@@ -263,127 +159,22 @@ pkgs/development/python-modules/buildcatrust/ @ajs124 @lukegb @mweinelt
 /nixos/modules/services/mail/rspamd.nix     @peti
 
 # Emacs
-/pkgs/applications/editors/emacs/elisp-packages @adisbladis
-/pkgs/applications/editors/emacs                @adisbladis
-/pkgs/top-level/emacs-packages.nix              @adisbladis
-
-# Neovim
-/pkgs/applications/editors/neovim      @figsoda @teto
+/pkgs/applications/editors/emacs-modes @adisbladis
+/pkgs/applications/editors/emacs       @adisbladis
+/pkgs/top-level/emacs-packages.nix     @adisbladis
 
 # VimPlugins
-/pkgs/applications/editors/vim/plugins         @figsoda
+/pkgs/misc/vim-plugins         @jonringer @softinio
 
 # VsCode Extensions
-/pkgs/applications/editors/vscode/extensions
+/pkgs/misc/vscode-extensions   @jonringer
 
-# PHP interpreter, packages, extensions, tests and documentation
-/doc/languages-frameworks/php.section.md          @aanderse @drupol @globin @ma27 @talyz
-/nixos/tests/php                                  @aanderse @drupol @globin @ma27 @talyz
-/pkgs/build-support/php/build-pecl.nix            @aanderse @drupol @globin @ma27 @talyz
-/pkgs/build-support/php                                     @drupol
-/pkgs/development/interpreters/php       @jtojnar @aanderse @drupol @globin @ma27 @talyz
-/pkgs/development/php-packages                    @aanderse @drupol @globin @ma27 @talyz
-/pkgs/top-level/php-packages.nix         @jtojnar @aanderse @drupol @globin @ma27 @talyz
+# Prometheus exporter modules and tests
+/nixos/modules/services/monitoring/prometheus/exporters.nix  @WilliButz
+/nixos/modules/services/monitoring/prometheus/exporters.xml  @WilliButz
+/nixos/tests/prometheus-exporters.nix                        @WilliButz
 
-# Docker tools
-/pkgs/build-support/docker                   @roberth
-/nixos/tests/docker-tools*                   @roberth
-/doc/build-helpers/images/dockertools.section.md  @roberth
-
-# Blockchains
-/pkgs/applications/blockchains  @mmahut @RaghavSood
-
-# Go
-/doc/languages-frameworks/go.section.md @kalbasit @katexochen @Mic92 @zowoq
-/pkgs/build-support/go @kalbasit @katexochen @Mic92 @zowoq
-/pkgs/development/compilers/go @kalbasit @katexochen @Mic92 @zowoq
-
-# GNOME
-/pkgs/desktops/gnome                              @jtojnar
-/pkgs/desktops/gnome/extensions                   @jtojnar
-/pkgs/build-support/make-hardcode-gsettings-patch @jtojnar
-
-# Cinnamon
-/pkgs/by-name/ci/cinnamon-*    @mkg20001
-/pkgs/by-name/cj/cjs           @mkg20001
-/pkgs/by-name/mu/muffin        @mkg20001
-/pkgs/by-name/ne/nemo          @mkg20001
-/pkgs/by-name/ne/nemo-*        @mkg20001
-
-# nim
-/pkgs/development/compilers/nim   @ehmry
-/pkgs/development/nim-packages    @ehmry
-/pkgs/top-level/nim-packages.nix  @ehmry
-
-# terraform providers
-/pkgs/applications/networking/cluster/terraform-providers @zowoq
-
-# Forgejo
-nixos/modules/services/misc/forgejo.nix @adamcstephens @bendlas @emilylange
-pkgs/by-name/fo/forgejo/package.nix     @adamcstephens @bendlas @emilylange
-
-# Dotnet
-/pkgs/build-support/dotnet                  @corngood
-/pkgs/development/compilers/dotnet          @corngood
-/pkgs/test/dotnet                           @corngood
-/doc/languages-frameworks/dotnet.section.md @corngood
-
-# Node.js
-/pkgs/build-support/node/build-npm-package      @winterqt
-/pkgs/build-support/node/fetch-npm-deps         @winterqt
-/doc/languages-frameworks/javascript.section.md @winterqt
-
-# environment.noXlibs option aka NoX
-/nixos/modules/config/no-x-libs.nix  @SuperSandro2000
-
-# OCaml
-/pkgs/build-support/ocaml           @ulrikstrid
-/pkgs/development/compilers/ocaml   @ulrikstrid
-/pkgs/development/ocaml-modules     @ulrikstrid
-
-# ZFS
-pkgs/os-specific/linux/zfs/2_1.nix        @raitobezarius
-pkgs/os-specific/linux/zfs/generic.nix    @raitobezarius
-nixos/modules/tasks/filesystems/zfs.nix   @raitobezarius
-nixos/tests/zfs.nix                       @raitobezarius
-
-# Zig
-/pkgs/development/compilers/zig @figsoda
-/doc/hooks/zig.section.md       @figsoda
-
-# Buildbot
-nixos/modules/services/continuous-integration/buildbot @Mic92 @zowoq
-nixos/tests/buildbot.nix                               @Mic92 @zowoq
-pkgs/development/tools/continuous-integration/buildbot @Mic92 @zowoq
-
-# Pretix
-pkgs/by-name/pr/pretix/ @mweinelt
-pkgs/by-name/pr/pretalx/ @mweinelt
-nixos/modules/services/web-apps/pretix.nix @mweinelt
-nixos/modules/services/web-apps/pretalx.nix @mweinelt
-nixos/tests/web-apps/pretix.nix @mweinelt
-nixos/tests/web-apps/pretalx.nix @mweinelt
-
-# incus/lxc/lxd
-nixos/maintainers/scripts/lxd/          @adamcstephens
-nixos/modules/virtualisation/incus.nix  @adamcstephens
-nixos/modules/virtualisation/lxc*       @adamcstephens
-nixos/modules/virtualisation/lxd*       @adamcstephens
-nixos/tests/incus/                      @adamcstephens
-nixos/tests/lxd/                        @adamcstephens
-pkgs/by-name/in/incus/                  @adamcstephens
-pkgs/by-name/lx/lxc*                    @adamcstephens
-pkgs/by-name/lx/lxd*                    @adamcstephens
-
-# ExpidusOS, Flutter
-/pkgs/development/compilers/flutter @RossComputerGuy
-/pkgs/desktops/expidus              @RossComputerGuy
-
-# GNU Tar & Zip
-/pkgs/tools/archivers/gnutar        @RossComputerGuy
-/pkgs/tools/archivers/zip           @RossComputerGuy
-
-# SELinux
-/pkgs/os-specific/linux/checkpolicy @RossComputerGuy
-/pkgs/os-specific/linux/libselinux  @RossComputerGuy
-/pkgs/os-specific/linux/libsepol    @RossComputerGuy
+# PHP
+/pkgs/development/interpreters/php  @etu
+/pkgs/top-level/php-packages.nix    @etu
+/pkgs/build-support/build-pecl.nix  @etu

.github/CONTRIBUTING.md

@@ -0,0 +1,62 @@
+# How to contribute
+
+Note: contributing implies licensing those contributions
+under the terms of [COPYING](../COPYING), which is an MIT-like license.
+
+## Opening issues
+
+* Make sure you have a [GitHub account](https://github.com/signup/free)
+* Make sure there is no open issue on the topic
+* [Submit a new issue](https://github.com/NixOS/nixpkgs/issues/new/choose) by choosing the kind of topic and fill out the template
+
+## Submitting changes
+
+* Format the commit messages in the following way:
+
+  ```
+  (pkg-name | nixos/<module>): (from -> to | init at version | refactor | etc)
+
+  (Motivation for change. Additional information.)
+  ```
+
+  For consistency, there should not be a period at the end of the commit message's summary line (the first line of the commit message).
+
+  Examples:
+
+  * nginx: init at 2.0.1
+  * firefox: 54.0.1 -> 55.0
+  * nixos/hydra: add bazBaz option
+
+    Dual baz behavior is needed to do foo.
+  * nixos/nginx: refactor config generation
+
+    The old config generation system used impure shell scripts and could break in specific circumstances (see #1234).
+
+* `meta.description` should:
+  * Be capitalized.
+  * Not start with the package name.
+  * Not have a period at the end.
+* `meta.license` must be set and fit the upstream license.
+  * If there is no upstream license, `meta.license` should default to `stdenv.lib.licenses.unfree`.
+* `meta.maintainers` must be set.
+
+See the nixpkgs manual for more details on [standard meta-attributes](https://nixos.org/nixpkgs/manual/#sec-standard-meta-attributes) and on how to [submit changes to nixpkgs](https://nixos.org/nixpkgs/manual/#chap-submitting-changes).
+
+## Writing good commit messages
+
+In addition to writing properly formatted commit messages, it's important to include relevant information so other developers can later understand *why* a change was made. While this information usually can be found by digging code, mailing list/Discourse archives, pull request discussions or upstream changes, it may require a lot of work.
+
+For package version upgrades and such a one-line commit message is usually sufficient.
+
+## Backporting changes
+
+To [backport a change into a release branch](https://nixos.org/nixpkgs/manual/#submitting-changes-stable-release-branches):
+
+1. Take note of the commit in which the change was introduced into `master`.
+2. Check out the target _release branch_, e.g. `release-20.03`. Do not use a _channel branch_ like `nixos-20.03` or `nixpkgs-20.03`.
+3. Use `git cherry-pick -x <original commit>`.
+4. Open your backport PR. Make sure to select the release branch (e.g. `release-20.03`) as the target branch of the PR, and link to the PR in which the original change was made to `master`.
+
+## Reviewing contributions
+
+See the nixpkgs manual for more details on how to [Review contributions](https://nixos.org/nixpkgs/manual/#chap-reviewing-contributions).

.github/ISSUE_TEMPLATE/bug_report.md

@@ -7,42 +7,31 @@ assignees: ''
 
 ---
 
-### Describe the bug
+**Describe the bug**
 A clear and concise description of what the bug is.
 
-### Steps To Reproduce
+**To Reproduce**
 Steps to reproduce the behavior:
 1. ...
 2. ...
 3. ...
 
-### Expected behavior
+**Expected behavior**
 A clear and concise description of what you expected to happen.
 
-### Screenshots
+**Screenshots**
 If applicable, add screenshots to help explain your problem.
 
-### Additional context
+**Additional context**
 Add any other context about the problem here.
 
-### Notify maintainers
-
-<!--
-Please @ people who are in the `meta.maintainers` list of the offending package or module.
-If in doubt, check `git blame` for whoever last touched something.
--->
-
-### Metadata
+**Metadata**
 Please run `nix-shell -p nix-info --run "nix-info -m"` and paste the result.
 
-```console
-[user@system:~]$ nix-shell -p nix-info --run "nix-info -m"
-output here
+Maintainer information:
+```yaml
+# a list of nixpkgs attributes affected by the problem
+attribute:
+# a list of nixos modules affected by the problem
+module:
 ```
-
----
-
-Add a :+1: [reaction] to [issues you find important].
-
-[reaction]: https://github.blog/2016-03-10-add-reactions-to-pull-requests-issues-and-comments/
-[issues you find important]: https://github.com/NixOS/nixpkgs/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc

.github/ISSUE_TEMPLATE/build_failure.md

@@ -1,46 +0,0 @@
----
-name: Build failure
-about: Create a report to help us improve
-title: 'Build failure: PACKAGENAME'
-labels: '0.kind: build failure'
-assignees: ''
-
----
-
-### Steps To Reproduce
-
-Steps to reproduce the behavior:
-1. build *X*
-
-### Build log
-
-```
-log here if short otherwise a link to a gist
-```
-
-### Additional context
-
-Add any other context about the problem here.
-
-### Notify maintainers
-
-<!--
-Please @ people who are in the `meta.maintainers` list of the offending package or module.
-If in doubt, check `git blame` for whoever last touched something.
--->
-
-### Metadata
-
-Please run `nix-shell -p nix-info --run "nix-info -m"` and paste the result.
-
-```console
-[user@system:~]$ nix-shell -p nix-info --run "nix-info -m"
-output here
-```
-
----
-
-Add a :+1: [reaction] to [issues you find important].
-
-[reaction]: https://github.blog/2016-03-10-add-reactions-to-pull-requests-issues-and-comments/
-[issues you find important]: https://github.com/NixOS/nixpkgs/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc

.github/ISSUE_TEMPLATE/missing_documentation.md

@@ -1,38 +0,0 @@
----
-name: Missing or incorrect documentation
-about: Help us improve the Nixpkgs and NixOS reference manuals
-title: 'Documentation: '
-labels: '9.needs: documentation'
-assignees: ''
-
----
-
-## Problem
-
-<!-- describe your problem -->
-
-## Proposal
-
-<!-- propose a solution (optional) -->
-
-## Checklist
-
-<!-- make sure this issue is not redundant or obsolete -->
-
-- [ ] checked [latest Nixpkgs manual] \([source][nixpkgs-source]) and [latest NixOS manual] \([source][nixos-source])
-- [ ] checked [open documentation issues] for possible duplicates
-- [ ] checked [open documentation pull requests] for possible solutions
-
-[latest Nixpkgs manual]: https://nixos.org/manual/nixpkgs/unstable/
-[latest NixOS manual]: https://nixos.org/manual/nixos/unstable/
-[nixpkgs-source]: https://github.com/NixOS/nixpkgs/tree/master/doc
-[nixos-source]: https://github.com/NixOS/nixpkgs/tree/master/nixos/doc/manual
-[open documentation issues]: https://github.com/NixOS/nixpkgs/issues?q=is%3Aissue+is%3Aopen+label%3A%229.needs%3A+documentation%22
-[open documentation pull requests]: https://github.com/NixOS/nixpkgs/pulls?q=is%3Aopen+is%3Apr+label%3A%228.has%3A+documentation%22%2C%226.topic%3A+documentation%22
-
----
-
-Add a :+1: [reaction] to [issues you find important].
-
-[reaction]: https://github.blog/2016-03-10-add-reactions-to-pull-requests-issues-and-comments/
-[issues you find important]: https://github.com/NixOS/nixpkgs/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc

.github/ISSUE_TEMPLATE/out_of_date_package_report.md

@@ -1,35 +0,0 @@
----
-name: Out-of-date package reports
-about: For packages that are out-of-date
-title: 'Update request: PACKAGENAME OLDVERSION → NEWVERSION'
-labels: '9.needs: package (update)'
-assignees: ''
-
----
-
-- Package name:
-- Latest released version:
-<!-- Search your package here: https://search.nixos.org/packages?channel=unstable -->
-- Current version on the unstable channel:
-- Current version on the stable/release channel:
-<!--
-Type the name of your package and try to find an open pull request for the package
-If you find an open pull request, you can review it!
-There's a high chance that you'll have the new version right away while helping the community!
--->
-- [ ] Checked the [nixpkgs pull requests](https://github.com/NixOS/nixpkgs/pulls)
-
-**Notify maintainers**
-
-<!-- If the search.nixos.org result shows no maintainers, tag the person that last updated the package. -->
-
------
-
-Note for maintainers: Please tag this issue in your PR.
-
----
-
-Add a :+1: [reaction] to [issues you find important].
-
-[reaction]: https://github.blog/2016-03-10-add-reactions-to-pull-requests-issues-and-comments/
-[issues you find important]: https://github.com/NixOS/nixpkgs/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc

.github/ISSUE_TEMPLATE/packaging_request.md

@@ -1,15 +1,14 @@
 ---
 name: Packaging requests
 about: For packages that are missing
-title: 'Package request: PACKAGENAME'
+title: ''
 labels: '0.kind: packaging request'
 assignees: ''
 
 ---
 
 **Project description**
-
-<!-- Describe the project a little: -->
+_describe the project a little_
 
 **Metadata**
 
@@ -17,10 +16,3 @@ assignees: ''
 * source URL:
 * license: mit, bsd, gpl2+ , ...
 * platforms: unix, linux, darwin, ...
-
----
-
-Add a :+1: [reaction] to [issues you find important].
-
-[reaction]: https://github.blog/2016-03-10-add-reactions-to-pull-requests-issues-and-comments/
-[issues you find important]: https://github.com/NixOS/nixpkgs/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc

.github/ISSUE_TEMPLATE/unreproducible_package.md

@@ -1,94 +0,0 @@
----
-name: Unreproducible package
-about: A package that does not produce a bit-by-bit reproducible result each time it is built
-title: ''
-labels: [ '0.kind: enhancement', '6.topic: reproducible builds' ]
-assignees: ''
-
----
-
-<!--
-Hello dear reporter,
-
-Thank you for bringing attention to this issue. Your insights are valuable to
-us, and we appreciate the time you took to document the problem.
-
-I wanted to kindly point out that in this issue template, it would be beneficial
-to replace the placeholder `<package>` with the actual, canonical name of the
-package you're reporting the issue for. Doing so will provide better context and
-facilitate quicker troubleshooting for anyone who reads this issue in the
-future.
-
-Best regards
--->
-
-Building this package multiple times does not yield bit-by-bit identical
-results, complicating the detection of Continuous Integration (CI) breaches. For
-more information on this issue, visit
-[reproducible-builds.org](https://reproducible-builds.org/).
-
-Fixing bit-by-bit reproducibility also has additional advantages, such as
-avoiding hard-to-reproduce bugs, making content-addressed storage more effective
-and reducing rebuilds in such systems.
-
-### Steps To Reproduce
-
-In the following steps, replace `<package>` with the canonical name of the
-package.
-
-#### 1. Build the package
-
-This step will build the package. Specific arguments are passed to the command
-to keep the build artifacts so we can compare them in case of differences.
-
-Execute the following command:
-
-```
-nix-build '<nixpkgs>' -A <package> && nix-build '<nixpkgs>' -A <package> --check --keep-failed
-```
-
-Or using the new command line style:
-
-```
-nix build nixpkgs#<package> && nix build nixpkgs#<package> --rebuild --keep-failed
-```
-
-#### 2. Compare the build artifacts
-
-If the previous command completes successfully, no differences were found and
-there's nothing to do, builds are reproducible.
-If it terminates with the error message `error: derivation '<X>' may not be
-deterministic: output '<Y>' differs from '<Z>'`, use `diffoscope` to investigate
-the discrepancies between the two build outputs. You may need to add the
-`--exclude-directory-metadata recursive` option to ignore files and directories
-metadata (*e.g. timestamp*) differences.
-
-```
-nix run nixpkgs#diffoscopeMinimal -- --exclude-directory-metadata recursive <Y> <Z>
-```
-
-#### 3. Examine the build log
-
-To examine the build log, use:
-
-```
-nix-store --read-log $(nix-instantiate '<nixpkgs>' -A <package>)
-```
-
-Or with the new command line style:
-
-```
-nix log $(nix path-info --derivation nixpkgs#<package>)
-```
-
-### Additional context
-
-(please share the relevant fragment of the diffoscope output here, and any
-additional analysis you may have done)
-
----
-
-Add a :+1: [reaction] to [issues you find important].
-
-[reaction]: https://github.blog/2016-03-10-add-reactions-to-pull-requests-issues-and-comments/
-[issues you find important]: https://github.com/NixOS/nixpkgs/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,49 +1,19 @@
-## Description of changes
+<!-- Nixpkgs has a lot of new incoming Pull Requests, but not enough people to review this constant stream. Even if you aren't a committer, we would appreciate reviews of other PRs, especially simple ones like package updates. Just testing the relevant package/service and leaving a comment saying what you tested, how you tested it and whether it worked would be great. List of open PRs: <https://github.com/NixOS/nixpkgs/pulls>, for more about reviewing contributions: <https://hydra.nixos.org/job/nixpkgs/trunk/manual/latest/download/1/nixpkgs/manual.html#chap-reviewing-contributions>. Reviewing isn't mandatory, but it would help out a lot and reduce the average time-to-merge for all of us. Thanks a lot if you do! -->
+###### Motivation for this change
 
-<!--
-For package updates please link to a changelog or describe changes, this helps your fellow maintainers discover breaking updates.
-For new packages please briefly describe the package or provide a link to its homepage.
--->
 
-## Things done
+###### Things done
 
 <!-- Please check what applies. Note that these are not hard requirements but merely serve as information for reviewers. -->
 
+- [ ] Tested using sandboxing ([nix.useSandbox](http://nixos.org/nixos/manual/options.html#opt-nix.useSandbox) on NixOS, or option `sandbox` in [`nix.conf`](http://nixos.org/nix/manual/#sec-conf-file) on non-NixOS linux)
 - Built on platform(s)
-  - [ ] x86_64-linux
-  - [ ] aarch64-linux
-  - [ ] x86_64-darwin
-  - [ ] aarch64-darwin
-- For non-Linux: Is sandboxing enabled in `nix.conf`? (See [Nix manual](https://nixos.org/manual/nix/stable/command-ref/conf-file.html))
-  - [ ] `sandbox = relaxed`
-  - [ ] `sandbox = true`
-- [ ] Tested, as applicable:
-  - [NixOS test(s)](https://nixos.org/manual/nixos/unstable/index.html#sec-nixos-tests) (look inside [nixos/tests](https://github.com/NixOS/nixpkgs/blob/master/nixos/tests))
-  - and/or [package tests](https://github.com/NixOS/nixpkgs/blob/master/pkgs/README.md#package-tests)
-  - or, for functions and "core" functionality, tests in [lib/tests](https://github.com/NixOS/nixpkgs/blob/master/lib/tests) or [pkgs/test](https://github.com/NixOS/nixpkgs/blob/master/pkgs/test)
-  - made sure NixOS tests are [linked](https://nixos.org/manual/nixpkgs/unstable/#ssec-nixos-tests-linking) to the relevant packages
-- [ ] Tested compilation of all packages that depend on this change using `nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD"`. Note: all changes have to be committed, also see [nixpkgs-review usage](https://github.com/Mic92/nixpkgs-review#usage)
-- [ ] Tested basic functionality of all binary files (usually in `./result/bin/`)
-- [24.11 Release Notes](https://github.com/NixOS/nixpkgs/blob/master/nixos/doc/manual/release-notes/rl-2411.section.md) (or backporting [23.11](https://github.com/NixOS/nixpkgs/blob/master/nixos/doc/manual/release-notes/rl-2311.section.md) and [24.05](https://github.com/NixOS/nixpkgs/blob/master/nixos/doc/manual/release-notes/rl-2405.section.md) Release notes)
-  - [ ] (Package updates) Added a release notes entry if the change is major or breaking
-  - [ ] (Module updates) Added a release notes entry if the change is significant
-  - [ ] (Module addition) Added a release notes entry if adding a new NixOS module
-- [ ] Fits [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md).
-
-<!--
-To help with the large amounts of pull requests, we would appreciate your
-reviews of other pull requests, especially simple package updates. Just leave a
-comment describing what you have tested in the relevant package/service.
-Reviewing helps to reduce the average time-to-merge for everyone.
-Thanks a lot if you do!
-
-List of open PRs: https://github.com/NixOS/nixpkgs/pulls
-Reviewing guidelines: https://github.com/NixOS/nixpkgs/blob/master/pkgs/README.md#reviewing-contributions
--->
-
----
-
-Add a :+1: [reaction] to [pull requests you find important].
-
-[reaction]: https://github.blog/2016-03-10-add-reactions-to-pull-requests-issues-and-comments/
-[pull requests you find important]: https://github.com/NixOS/nixpkgs/pulls?q=is%3Aopen+sort%3Areactions-%2B1-desc
+   - [ ] NixOS
+   - [ ] macOS
+   - [ ] other Linux distributions
+- [ ] Tested via one or more NixOS test(s) if existing and applicable for the change (look inside [nixos/tests](https://github.com/NixOS/nixpkgs/blob/master/nixos/tests))
+- [ ] Tested compilation of all pkgs that depend on this change using `nix-shell -p nixpkgs-review --run "nixpkgs-review wip"`
+- [ ] Tested execution of all binary files (usually in `./result/bin/`)
+- [ ] Determined the impact on package closure size (by running `nix path-info -S` before and after)
+- [ ] Ensured that relevant documentation is up to date
+- [ ] Fits [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/.github/CONTRIBUTING.md).

.github/STALE-BOT.md

@@ -1,36 +0,0 @@
-# Stale bot information
-
-- Thanks for your contribution!
-- Our stale bot will never close an issue or PR.
-- To remove the stale label, just leave a new comment.
-- _How to find the right people to ping?_ → [`git blame`](https://git-scm.com/docs/git-blame) to the rescue! (or GitHub's history and blame buttons.)
-- You can always ask for help on [our Discourse Forum](https://discourse.nixos.org/), [our Matrix room](https://matrix.to/#/#nix:nixos.org), or on the [#nixos IRC channel](https://web.libera.chat/#nixos).
-
-## Suggestions for PRs
-
-1. GitHub sometimes doesn't notify people who commented / reviewed a PR previously, when you (force) push commits. If you have addressed the reviews you can [officially ask for a review](https://docs.github.com/en/free-pro-team@latest/github/collaborating-with-issues-and-pull-requests/requesting-a-pull-request-review) from those who commented to you or anyone else.
-2. If it is unfinished but you plan to finish it, please mark it as a draft.
-3. If you don't expect to work on it any time soon, closing it with a short comment may encourage someone else to pick up your work.
-4. To get things rolling again, rebase the PR against the target branch and address valid comments.
-5. If you need a review to move forward, ask in [the Discourse thread for PRs that need help](https://discourse.nixos.org/t/prs-in-distress/3604).
-6. If all you need is a merge, check the git history to find and [request reviews](https://docs.github.com/en/github/collaborating-with-issues-and-pull-requests/requesting-a-pull-request-review) from people who usually merge related contributions.
-
-## Suggestions for issues
-
-1. If it is resolved (either for you personally, or in general), please consider closing it.
-2. If this might still be an issue, but you are not interested in promoting its resolution, please consider closing it while encouraging others to take over and reopen an issue if they care enough.
-3. If you still have interest in resolving it, try to ping somebody who you believe might have an interest in the topic. Consider discussing the problem in [our Discourse Forum](https://discourse.nixos.org/).
-4. As with all open source projects, your best option is to submit a Pull Request that addresses this issue. We :heart: this attitude!
-
-**Memorandum on closing issues**
-
-Don't be afraid to close an issue that holds valuable information. Closed issues stay in the system for people to search, read, cross-reference, or even reopen--nothing is lost! Closing obsolete issues is an important way to help maintainers focus their time and effort.
-
-## Useful GitHub search queries
-
-- [Open PRs with any stale-bot interaction](https://github.com/NixOS/nixpkgs/pulls?q=is%3Apr+is%3Aopen+commenter%3Aapp%2Fstale+)
-- [Open PRs with any stale-bot interaction and `2.status: stale`](https://github.com/NixOS/nixpkgs/pulls?q=is%3Apr+is%3Aopen+commenter%3Aapp%2Fstale+label%3A%222.status%3A+stale%22)
-- [Open PRs with any stale-bot interaction and NOT `2.status: stale`](https://github.com/NixOS/nixpkgs/pulls?q=is%3Apr+is%3Aopen+commenter%3Aapp%2Fstale+-label%3A%222.status%3A+stale%22+)
-- [Open Issues with any stale-bot interaction](https://github.com/NixOS/nixpkgs/issues?q=is%3Aissue+is%3Aopen+commenter%3Aapp%2Fstale+)
-- [Open Issues with any stale-bot interaction and `2.status: stale`](https://github.com/NixOS/nixpkgs/issues?q=is%3Aissue+is%3Aopen+commenter%3Aapp%2Fstale+label%3A%222.status%3A+stale%22+)
-- [Open Issues with any stale-bot interaction and NOT `2.status: stale`](https://github.com/NixOS/nixpkgs/issues?q=is%3Aissue+is%3Aopen+commenter%3Aapp%2Fstale+-label%3A%222.status%3A+stale%22+)

.github/dependabot.yml

@@ -1,6 +0,0 @@
-version: 2
-updates:
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: "weekly"

.github/labeler.yml

@@ -1,415 +0,0 @@
-"6.topic: agda":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - doc/languages-frameworks/agda.section.md
-        - nixos/tests/agda.nix
-        - pkgs/build-support/agda/**/*
-        - pkgs/development/libraries/agda/**/*
-        - pkgs/top-level/agda-packages.nix
-
-"6.topic: cinnamon":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - nixos/modules/services/x11/desktop-managers/cinnamon.nix
-        - nixos/tests/cinnamon.nix
-        - nixos/tests/cinnamon-wayland.nix
-        - pkgs/by-name/ci/cinnamon-*/**/*
-        - pkgs/by-name/cj/cjs/**/*
-        - pkgs/by-name/mu/muffin/**/*
-        - pkgs/by-name/ne/nemo/**/*
-        - pkgs/by-name/ne/nemo-*/**/*
-
-"6.topic: dotnet":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - doc/languages-frameworks/dotnet.section.md
-        - maintainers/scripts/update-dotnet-lockfiles.nix
-        - pkgs/build-support/dotnet/**/*
-        - pkgs/development/compilers/dotnet/**/*
-        - pkgs/test/dotnet/**/*
-        - pkgs/top-level/dotnet-packages.nix
-
-"6.topic: emacs":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - nixos/modules/services/editors/emacs.nix
-        - nixos/modules/services/editors/emacs.xml
-        - nixos/tests/emacs-daemon.nix
-        - pkgs/applications/editors/emacs/build-support/**/*
-        - pkgs/applications/editors/emacs/elisp-packages/**/*
-        - pkgs/applications/editors/emacs/**/*
-        - pkgs/top-level/emacs-packages.nix
-
-"6.topic: Enlightenment DE":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - nixos/modules/services/x11/desktop-managers/enlightenment.nix
-        - pkgs/desktops/enlightenment/**/*
-        - pkgs/development/python-modules/python-efl/*
-
-"6.topic: erlang":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - doc/languages-frameworks/beam.section.md
-        - pkgs/development/beam-modules/**/*
-        - pkgs/development/interpreters/elixir/**/*
-        - pkgs/development/interpreters/erlang/**/*
-        - pkgs/development/tools/build-managers/rebar/**/*
-        - pkgs/development/tools/build-managers/rebar3/**/*
-        - pkgs/development/tools/erlang/**/*
-        - pkgs/top-level/beam-packages.nix
-
-"6.topic: fetch":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - pkgs/build-support/fetch*/**/*
-
-"6.topic: flakes":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - '**/flake.nix'
-        - lib/systems/flake-systems.nix
-        - nixos/modules/config/nix-flakes.nix
-
-"6.topic: flutter":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - pkgs/build-support/flutter/*.nix
-        - pkgs/development/compilers/flutter/**/*.nix
-
-"6.topic: GNOME":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - doc/languages-frameworks/gnome.section.md
-        - nixos/modules/services/desktops/gnome/**/*
-        - nixos/modules/services/x11/desktop-managers/gnome.nix
-        - nixos/tests/gnome-xorg.nix
-        - nixos/tests/gnome.nix
-        - pkgs/desktops/gnome/**/*
-
-"6.topic: golang":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - doc/languages-frameworks/go.section.md
-        - pkgs/build-support/go/**/*
-        - pkgs/development/compilers/go/**/*
-
-"6.topic: haskell":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - doc/languages-frameworks/haskell.section.md
-        - maintainers/scripts/haskell/**/*
-        - pkgs/development/compilers/ghc/**/*
-        - pkgs/development/haskell-modules/**/*
-        - pkgs/development/tools/haskell/**/*
-        - pkgs/test/haskell/**/*
-        - pkgs/top-level/haskell-packages.nix
-        - pkgs/top-level/release-haskell.nix
-
-"6.topic: julia":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - doc/languages-frameworks/julia.section.md
-        - pkgs/development/compilers/julia/**/*
-        - pkgs/development/julia-modules/**/*
-
-"6.topic: jupyter":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - pkgs/development/python-modules/jupyter*/**/*
-        - pkgs/development/python-modules/mkdocs-jupyter/*
-        - nixos/modules/services/development/jupyter/**/*
-        - pkgs/applications/editors/jupyter-kernels/**/*
-        - pkgs/applications/editors/jupyter/**/*
-
-"6.topic: k3s":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - nixos/modules/services/cluster/k3s/**/*
-        - nixos/tests/k3s/**/*
-        - pkgs/applications/networking/cluster/k3s/**/*
-
-"6.topic: kernel":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - pkgs/build-support/kernel/**/*
-        - pkgs/os-specific/linux/kernel/**/*
-
-"6.topic: lib":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - lib/**
-
-"6.topic: llvm/clang":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - pkgs/development/compilers/llvm/**/*
-
-"6.topic: lua":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - pkgs/development/tools/misc/luarocks/*
-        - pkgs/development/interpreters/lua-5/**/*
-        - pkgs/development/interpreters/luajit/**/*
-        - pkgs/development/lua-modules/**/*
-        - pkgs/top-level/lua-packages.nix
-
-"6.topic: Lumina DE":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - nixos/modules/services/x11/desktop-managers/lumina.nix
-        - pkgs/desktops/lumina/**/*
-
-"6.topic: LXQt":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - nixos/modules/services/x11/desktop-managers/lxqt.nix
-        - pkgs/desktops/lxqt/**/*
-
-"6.topic: mate":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - nixos/modules/services/x11/desktop-managers/mate.nix
-        - nixos/tests/mate.nix
-        - pkgs/desktops/mate/**/*
-
-"6.topic: module system":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - lib/modules.nix
-        - lib/types.nix
-        - lib/options.nix
-        - lib/tests/modules.sh
-        - lib/tests/modules/**
-
-"6.topic: nixos":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - nixos/**/*
-        - pkgs/os-specific/linux/nixos-rebuild/**/*
-
-"6.topic: nim":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - doc/languages-frameworks/nim.section.md
-        - pkgs/development/compilers/nim/*
-        - pkgs/development/nim-packages/**/*
-        - pkgs/top-level/nim-packages.nix
-
-"6.topic: nodejs":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - doc/languages-frameworks/javascript.section.md
-        - pkgs/build-support/node/**/*
-        - pkgs/development/node-packages/**/*
-        - pkgs/development/tools/yarn/*
-        - pkgs/development/tools/yarn2nix-moretea/**/*
-        - pkgs/development/tools/pnpm/**/*
-        - pkgs/development/web/nodejs/*
-
-"6.topic: ocaml":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - doc/languages-frameworks/ocaml.section.md
-        - pkgs/development/compilers/ocaml/**/*
-        - pkgs/development/compilers/reason/**/*
-        - pkgs/development/ocaml-modules/**/*
-        - pkgs/development/tools/ocaml/**/*
-        - pkgs/top-level/ocaml-packages.nix
-
-"6.topic: pantheon":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - nixos/modules/services/desktops/pantheon/**/*
-        - nixos/modules/services/x11/desktop-managers/pantheon.nix
-        - nixos/modules/services/x11/display-managers/lightdm-greeters/pantheon.nix
-        - nixos/tests/pantheon.nix
-        - pkgs/desktops/pantheon/**/*
-
-"6.topic: php":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - doc/languages-frameworks/php.section.md
-        - pkgs/build-support/php/**/*
-        - pkgs/development/interpreters/php/*
-        - pkgs/development/php-packages/**/*
-        - pkgs/test/php/default.nix
-        - pkgs/top-level/php-packages.nix
-
-"6.topic: policy discussion":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - .github/**/*
-
-"6.topic: printing":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - nixos/modules/services/printing/cupsd.nix
-        - pkgs/misc/cups/**/*
-
-"6.topic: python":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - doc/languages-frameworks/python.section.md
-        - pkgs/development/interpreters/python/**/*
-        - pkgs/development/python-modules/**/*
-        - pkgs/top-level/python-packages.nix
-
-"6.topic: qt/kde":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - doc/languages-frameworks/qt.section.md
-        - nixos/modules/services/x11/desktop-managers/plasma5.nix
-        - nixos/tests/plasma5.nix
-        - pkgs/applications/kde/**/*
-        - pkgs/desktops/plasma-5/**/*
-        - pkgs/development/libraries/kde-frameworks/**/*
-        - pkgs/development/libraries/qt-5/**/*
-
-"6.topic: ruby":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - doc/languages-frameworks/ruby.section.md
-        - pkgs/development/interpreters/ruby/**/*
-        - pkgs/development/ruby-modules/**/*
-
-"6.topic: rust":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - doc/languages-frameworks/rust.section.md
-        - pkgs/build-support/rust/**/*
-        - pkgs/development/compilers/rust/**/*
-
-"6.topic: stdenv":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - pkgs/stdenv/**/*
-
-"6.topic: steam":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - pkgs/games/steam/**/*
-
-"6.topic: systemd":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - pkgs/os-specific/linux/systemd/**/*
-        - nixos/modules/system/boot/systemd*/**/*
-
-"6.topic: TeX":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - doc/languages-frameworks/texlive.section.md
-        - pkgs/test/texlive/**
-        - pkgs/tools/typesetting/tex/**/*
-
-"6.topic: testing":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        # NOTE: Let's keep the scope limited to test frameworks that are
-        #       *developed in this repo*;
-        #       - not individual tests
-        #       - not packages for test frameworks
-        - pkgs/build-support/testers/**
-        - nixos/lib/testing/**
-        - nixos/lib/test-driver/**
-        - nixos/tests/nixos-test-driver/**
-        - nixos/lib/testing-python.nix      # legacy
-        - nixos/tests/make-test-python.nix  # legacy
-        # lib/debug.nix has a test framework (runTests) but it's not the main focus
-
-"6.topic: vim":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - doc/languages-frameworks/vim.section.md
-        - pkgs/applications/editors/vim/**/*
-        - pkgs/applications/editors/vim/plugins/**/*
-        - nixos/modules/programs/neovim.nix
-        - pkgs/applications/editors/neovim/**/*
-
-"6.topic: vscode":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - pkgs/applications/editors/vscode/**/*
-
-"6.topic: xfce":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - nixos/doc/manual/configuration/xfce.xml
-        - nixos/modules/services/x11/desktop-managers/xfce.nix
-        - nixos/tests/xfce.nix
-        - pkgs/desktops/xfce/**/*
-
-"6.topic: zig":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - pkgs/development/compilers/zig/**/*
-        - doc/hooks/zig.section.md
-
-"8.has: changelog":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - nixos/doc/manual/release-notes/**/*
-
-"8.has: documentation":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - doc/**/*
-        - nixos/doc/**/*
-
-"8.has: module (update)":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - nixos/modules/**/*
-"8.has: maintainer-list (update)":
-  - any:
-    - changed-files:
-      - any-glob-to-any-file:
-        - maintainers/maintainer-list.nix

.github/stale.yml

@@ -1,9 +1,32 @@
-# Configuration for probot-stale - https://github.com/probot/stale
+# Number of days of inactivity before an issue becomes stale
 daysUntilStale: 180
+# Number of days of inactivity before a stale issue is closed
 daysUntilClose: false
+# Issues with these labels will never be considered stale
 exemptLabels:
-  - "1.severity: security"
-  - "2.status: never-stale"
-staleLabel: "2.status: stale"
-markComment: false
+  - 1.severity: security
+# Label to use when marking an issue as stale
+staleLabel: 2.status: stale
+# Comment to post when marking an issue as stale. Set to `false` to disable
+markComment: >
+  Thank you for your contributions.
+
+  This has been automatically marked as stale because it has had no
+  activity for 180 days.
+
+  If this is still important to you, we ask that you leave a
+  comment below. Your comment can be as simple as "still important
+  to me". This lets people see that at least one person still cares
+  about this. Someone will have to do this at most twice a year if
+  there is no other activity.
+
+  Here are suggestions that might help resolve this more quickly:
+
+  1. Search for maintainers and people that previously touched the
+     related code and @ mention them in a comment.
+  2. Ask on the [NixOS Discourse](https://discourse.nixos.org/).
+  3. Ask on the [#nixos channel](irc://irc.freenode.net/#nixos) on
+     [irc.freenode.net](https://freenode.net).
+
+# Comment to post when closing a stale issue. Set to `false` to disable
 closeComment: false

.github/workflows/backport.yml

@@ -1,35 +0,0 @@
-name: Backport
-on:
-  pull_request_target:
-    types: [closed, labeled]
-
-# WARNING:
-# When extending this action, be aware that $GITHUB_TOKEN allows write access to
-# the GitHub repository. This means that it should not evaluate user input in a
-# way that allows code injection.
-
-permissions:
-  contents: read
-
-jobs:
-  backport:
-    permissions:
-      contents: write # for korthout/backport-action to create branch
-      pull-requests: write # for korthout/backport-action to create PR to backport
-    name: Backport Pull Request
-    if: github.repository_owner == 'NixOS' && github.event.pull_request.merged == true && (github.event_name != 'labeled' || startsWith('backport', github.event.label.name))
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-        with:
-          ref: ${{ github.event.pull_request.head.sha }}
-      - name: Create backport PRs
-        uses: korthout/backport-action@bd410d37cdcae80be6d969823ff5a225fe5c833f # v3.0.2
-        with:
-          # Config README: https://github.com/korthout/backport-action#backport-action
-          copy_labels_pattern: 'severity:\ssecurity'
-          pull_description: |-
-            Bot-based backport to `${target_branch}`, triggered by a label in #${pull_number}.
-
-            * [ ] Before merging, ensure that this backport is [acceptable for the release](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md#changes-acceptable-for-releases).
-              * Even as a non-commiter, if you find that it is not acceptable, leave a comment.

.github/workflows/basic-eval.yml

@@ -1,29 +0,0 @@
-name: Basic evaluation checks
-
-on:
-  workflow_dispatch
-  # pull_request:
-  #   branches:
-  #    - master
-  #    - release-**
-  # push:
-  #   branches:
-  #    - master
-  #    - release-**
-permissions:
-  contents: read
-
-jobs:
-  tests:
-    runs-on: ubuntu-latest
-    # we don't limit this action to only NixOS repo since the checks are cheap and useful developer feedback
-    steps:
-    - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-    - uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
-    - uses: cachix/cachix-action@ad2ddac53f961de1989924296a1f236fcfbaa4fc # v15
-      with:
-        # This cache is for the nixpkgs repo checks and should not be trusted or used elsewhere.
-        name: nixpkgs-ci
-        signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
-    # explicit list of supportedSystems is needed until aarch64-darwin becomes part of the trunk jobset
-    - run: nix-build pkgs/top-level/release.nix -A release-checks --arg supportedSystems '[ "aarch64-darwin" "aarch64-linux" "x86_64-linux" "x86_64-darwin"  ]'

.github/workflows/check-by-name.yml

@@ -1,123 +0,0 @@
-# Checks pkgs/by-name (see pkgs/by-name/README.md)
-# using the nixpkgs-check-by-name tool (see https://github.com/NixOS/nixpkgs-check-by-name)
-#
-# When you make changes to this workflow, also update pkgs/test/check-by-name/run-local.sh adequately
-name: Check pkgs/by-name
-
-on:
-  # Using pull_request_target instead of pull_request avoids having to approve first time contributors
-  pull_request_target:
-    # This workflow depends on the base branch of the PR,
-    # but changing the base branch is not included in the default trigger events,
-    # which would be `opened`, `synchronize` or `reopened`.
-    # Instead it causes an `edited` event, so we need to add it explicitly here
-    # While `edited` is also triggered when the PR title/body is changed,
-    # this PR action is fairly quick, and PR's don't get edited that often,
-    # so it shouldn't be a problem
-    # There is a feature request for adding a `base_changed` event:
-    # https://github.com/orgs/community/discussions/35058
-    types: [opened, synchronize, reopened, edited]
-
-permissions: {}
-
-# We don't use a concurrency group here, because the action is triggered quite often (due to the PR edit
-# trigger), and contributers would get notified on any canceled run.
-# There is a feature request for supressing notifications on concurrency-canceled runs:
-# https://github.com/orgs/community/discussions/13015
-
-jobs:
-  check:
-    # This needs to be x86_64-linux, because we depend on the tooling being pre-built in the GitHub releases
-    runs-on: ubuntu-latest
-    # This should take 1 minute at most, but let's be generous.
-    # The default of 6 hours is definitely too long
-    timeout-minutes: 10
-    steps:
-      # This step has to be in this file,
-      # because it's needed to determine which revision of the repository to fetch,
-      # and we can only use other files from the repository once it's fetched.
-      - name: Resolving the merge commit
-        env:
-          GH_TOKEN: ${{ github.token }}
-        run: |
-          # This checks for mergeability of a pull request as recommended in
-          # https://docs.github.com/en/rest/guides/using-the-rest-api-to-interact-with-your-git-database?apiVersion=2022-11-28#checking-mergeability-of-pull-requests
-
-          # Retry the API query this many times
-          retryCount=5
-          # Start with 5 seconds, but double every retry
-          retryInterval=5
-          while true; do
-            echo "Checking whether the pull request can be merged"
-            prInfo=$(gh api \
-              -H "Accept: application/vnd.github+json" \
-              -H "X-GitHub-Api-Version: 2022-11-28" \
-              /repos/"$GITHUB_REPOSITORY"/pulls/${{ github.event.pull_request.number }})
-            mergeable=$(jq -r .mergeable <<< "$prInfo")
-            mergedSha=$(jq -r .merge_commit_sha <<< "$prInfo")
-
-            if [[ "$mergeable" == "null" ]]; then
-              if (( retryCount == 0 )); then
-                echo "Not retrying anymore. It's likely that GitHub is having internal issues: check https://www.githubstatus.com/"
-                exit 1
-              else
-                (( retryCount -= 1 )) || true
-
-                # null indicates that GitHub is still computing whether it's mergeable
-                # Wait a couple seconds before trying again
-                echo "GitHub is still computing whether this PR can be merged, waiting $retryInterval seconds before trying again ($retryCount retries left)"
-                sleep "$retryInterval"
-
-                (( retryInterval *= 2 )) || true
-              fi
-            else
-              break
-            fi
-          done
-
-          if [[ "$mergeable" == "true" ]]; then
-            echo "The PR can be merged, checking the merge commit $mergedSha"
-            echo "mergedSha=$mergedSha" >> "$GITHUB_ENV"
-          else
-            echo "The PR cannot be merged, it has a merge conflict, skipping the rest.."
-          fi
-      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-        if: env.mergedSha
-        with:
-          # pull_request_target checks out the base branch by default
-          ref: ${{ env.mergedSha }}
-          # Fetches the merge commit and its parents
-          fetch-depth: 2
-      - name: Checking out base branch
-        if: env.mergedSha
-        run: |
-          base=$(mktemp -d)
-          git worktree add "$base" "$(git rev-parse HEAD^1)"
-          echo "base=$base" >> "$GITHUB_ENV"
-      - uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
-        if: env.mergedSha
-      - name: Fetching the pinned tool
-        if: env.mergedSha
-        # Update the pinned version using pkgs/test/check-by-name/update-pinned-tool.sh
-        run: |
-          # The pinned version of the tooling to use
-          toolVersion=$(<pkgs/test/check-by-name/pinned-version.txt)
-          # Fetch the x86_64-linux-specific release artifact containing the Gzipped NAR of the pre-built tool
-          toolPath=$(curl -sSfL https://github.com/NixOS/nixpkgs-check-by-name/releases/download/"$toolVersion"/x86_64-linux.nar.gz \
-            | gzip -cd | nix-store --import | tail -1)
-          # Adds a result symlink as a GC root
-          nix-store --realise "$toolPath" --add-root result
-      - name: Running nixpkgs-check-by-name
-        if: env.mergedSha
-        env:
-          # Force terminal colors to be enabled. The library that
-          # nixpkgs-check-by-name uses respects: https://bixense.com/clicolors/
-          CLICOLOR_FORCE: 1
-        run: |
-          if result/bin/nixpkgs-check-by-name --base "$base" .; then
-            exit 0
-          else
-            exitCode=$?
-            echo "To run locally: ./maintainers/scripts/check-by-name.sh $GITHUB_BASE_REF https://github.com/$GITHUB_REPOSITORY.git"
-            exit "$exitCode"
-          fi

.github/workflows/check-cherry-picks.yml

@@ -1,25 +0,0 @@
-name: "Check cherry-picks"
-on:
-  pull_request_target:
-    branches:
-     - 'release-**'
-     - 'staging-**'
-     - '!staging-next'
-
-permissions: {}
-
-jobs:
-  check:
-    runs-on: ubuntu-latest
-    if: github.repository_owner == 'NixOS'
-    steps:
-    - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-      with:
-        fetch-depth: 0
-        filter: blob:none
-    - name: Check cherry-picks
-      env:
-        BASE_SHA: ${{ github.event.pull_request.base.sha }}
-        HEAD_SHA: ${{ github.event.pull_request.head.sha }}
-      run: |
-        ./maintainers/scripts/check-cherry-picks.sh "$BASE_SHA" "$HEAD_SHA"

.github/workflows/check-maintainers-sorted.yaml

@@ -1,28 +0,0 @@
-name: "Check that maintainer list is sorted"
-
-on:
-  pull_request_target:
-    paths:
-      - 'maintainers/maintainer-list.nix'
-permissions:
-  contents: read
-
-jobs:
-  nixos:
-    runs-on: ubuntu-latest
-    if: github.repository_owner == 'NixOS'
-    steps:
-      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-        with:
-          # pull_request_target checks out the base branch by default
-          ref: refs/pull/${{ github.event.pull_request.number }}/merge
-          # Only these directories to perform the check
-          sparse-checkout: |
-            lib
-            maintainers
-      - uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
-        with:
-          # explicitly enable sandbox
-          extra_nix_config: sandbox = true
-      - name: Check that maintainer-list.nix is sorted
-        run: nix-instantiate --eval maintainers/scripts/check-maintainers-sorted.nix

.github/workflows/check-nix-format.yml

@@ -1,88 +0,0 @@
-# This file was copied mostly from check-maintainers-sorted.yaml.
-# NOTE: Formatting with the RFC-style nixfmt command is not yet stable. See
-# https://github.com/NixOS/rfcs/pull/166.
-# Because of this, this action is not yet enabled for all files -- only for
-# those who have opted in.
-name: Check that Nix files are formatted
-
-on:
-  pull_request_target:
-    # See the comment at the same location in ./check-by-name.yml
-    types: [opened, synchronize, reopened, edited]
-permissions:
-  contents: read
-
-jobs:
-  nixos:
-    runs-on: ubuntu-latest
-    if: "!contains(github.event.pull_request.title, '[skip treewide]')"
-    steps:
-      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-        with:
-          # pull_request_target checks out the base branch by default
-          ref: refs/pull/${{ github.event.pull_request.number }}/merge
-          # Fetches the merge commit and its parents
-          fetch-depth: 2
-      - name: Checking out base branch
-        run: |
-          base=$(mktemp -d)
-          baseRev=$(git rev-parse HEAD^1)
-          git worktree add "$base" "$baseRev"
-          echo "baseRev=$baseRev" >> "$GITHUB_ENV"
-          echo "base=$base" >> "$GITHUB_ENV"
-      - name: Get Nixpkgs revision for nixfmt
-        run: |
-          # pin to a commit from nixpkgs-unstable to avoid e.g. building nixfmt
-          # from staging
-          # This should not be a URL, because it would allow PRs to run arbitrary code in CI!
-          rev=$(jq -r .rev ci/pinned-nixpkgs.json)
-          echo "url=https://github.com/NixOS/nixpkgs/archive/$rev.tar.gz" >> "$GITHUB_ENV"
-      - uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
-        with:
-          # explicitly enable sandbox
-          extra_nix_config: sandbox = true
-          nix_path: nixpkgs=${{ env.url }}
-      - name: Install nixfmt
-        run: "nix-env -f '<nixpkgs>' -iAP nixfmt-rfc-style"
-      - name: Check that Nix files are formatted according to the RFC style
-        run: |
-          unformattedFiles=()
-
-          # TODO: Make this more parallel
-
-          # Loop through all Nix files touched by the PR
-          while readarray -d '' -n 2 entry && (( ${#entry[@]} != 0 )); do
-            type=${entry[0]}
-            file=${entry[1]}
-            case $type in
-              A*)
-                source=""
-                dest=$file
-                ;;
-              M*)
-                source=$file
-                dest=$file
-                ;;
-              C*|R*)
-                source=$file
-                read -r -d '' dest
-                ;;
-              *)
-                echo "Ignoring file $file with type $type"
-                continue
-            esac
-
-            # Ignore files that weren't already formatted
-            if [[ -n "$source" ]] && ! nixfmt --check ${{ env.base }}/"$source" 2>/dev/null; then
-              echo "Ignoring file $file because it's not formatted in the base commit"
-            elif ! nixfmt --check "$dest"; then
-              unformattedFiles+=("$dest")
-            fi
-          done < <(git diff -z --name-status ${{ env.baseRev }} -- '*.nix')
-
-          if (( "${#unformattedFiles[@]}" > 0 )); then
-            echo "Some new/changed Nix files are not properly formatted"
-            echo "Please run the following in \`nix-shell\`:"
-            echo "nixfmt ${unformattedFiles[*]@Q}"
-            exit 1
-          fi

.github/workflows/check-nixf-tidy.yml

@@ -1,128 +0,0 @@
-name: Check changed Nix files with nixf-tidy (experimental)
-
-on:
-  pull_request_target:
-    types: [opened, synchronize, reopened, edited]
-permissions:
-  contents: read
-
-jobs:
-  nixos:
-    runs-on: ubuntu-latest
-    if: "!contains(github.event.pull_request.title, '[skip treewide]')"
-    steps:
-      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-        with:
-          # pull_request_target checks out the base branch by default
-          ref: refs/pull/${{ github.event.pull_request.number }}/merge
-          # Fetches the merge commit and its parents
-          fetch-depth: 2
-      - name: Checking out base branch
-        run: |
-          base=$(mktemp -d)
-          baseRev=$(git rev-parse HEAD^1)
-          git worktree add "$base" "$baseRev"
-          echo "baseRev=$baseRev" >> "$GITHUB_ENV"
-          echo "base=$base" >> "$GITHUB_ENV"
-      - name: Get Nixpkgs revision for nixf
-        run: |
-          # pin to a commit from nixpkgs-unstable to avoid e.g. building nixf
-          # from staging
-          # This should not be a URL, because it would allow PRs to run arbitrary code in CI!
-          rev=$(jq -r .rev ci/pinned-nixpkgs.json)
-          echo "url=https://github.com/NixOS/nixpkgs/archive/$rev.tar.gz" >> "$GITHUB_ENV"
-      - uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
-        with:
-          # explicitly enable sandbox
-          extra_nix_config: sandbox = true
-          nix_path: nixpkgs=${{ env.url }}
-      - name: Install nixf and jq
-        # provided jq is incompatible with our expression
-        run: "nix-env -f '<nixpkgs>' -iAP nixf jq"
-      - name: Check that Nix files pass nixf-tidy
-        run: |
-          # Filtering error messages we don't like
-          nixf_wrapper(){
-            nixf-tidy --variable-lookup < "$1" | jq -r '
-              [
-                "sema-escaping-with"
-              ]
-              as $ignored_errors|[.[]|select(.sname as $s|$ignored_errors|index($s)|not)]
-            '
-          }
-
-          failedFiles=()
-
-          # Don't report errors to file overview
-          # to avoid duplicates when editing title and description
-          if [[ "${{ github.event.action }}" == 'edited' ]] && [[ -z "${{ github.event.edited.changes.base }}" ]]; then
-            DONT_REPORT_ERROR=1
-          else
-            DONT_REPORT_ERROR=
-          fi
-          # TODO: Make this more parallel
-
-          # Loop through all Nix files touched by the PR
-          while readarray -d '' -n 2 entry && (( ${#entry[@]} != 0 )); do
-            type=${entry[0]}
-            file=${entry[1]}
-            case $type in
-              A*)
-                source=""
-                dest=$file
-                ;;
-              M*)
-                source=$file
-                dest=$file
-                ;;
-              C*|R*)
-                source=$file
-                read -r -d '' dest
-                ;;
-              *)
-                echo "Ignoring file $file with type $type"
-                continue
-            esac
-
-            if [[ -n "$source" ]] && [[ "$(nixf_wrapper ${{ env.base }}/"$source")" != '[]' ]] 2>/dev/null; then
-              echo "Ignoring file $file because it doesn't pass nixf-tidy in the base commit"
-              echo # insert blank line
-            else
-              nixf_report="$(nixf_wrapper "$dest")"
-              if [[ "$nixf_report" != '[]' ]]; then
-                echo "$dest doesn't pass nixf-tidy. Reported by nixf-tidy:"
-                errors=$(echo "$nixf_report" | jq -r --arg dest "$dest" '
-                  def getLCur: "line=" + (.line+1|tostring) + ",col=" + (.column|tostring);
-                  def getRCur: "endLine=" + (.line+1|tostring) + ",endColumn=" + (.column|tostring);
-                  def getRange: "file=\($dest)," + (.lCur|getLCur) + "," + (.rCur|getRCur);
-                  def getBody: . as $top|(.range|getRange) + ",title="+ .sname + "::" +
-                    (.message|sub("{}" ; ($top.args.[]|tostring)));
-                  def getNote: "\n::notice " + (.|getBody);
-                  def getMessage: "::error " + (.|getBody) + (if (.notes|length)>0 then
-                    ([.notes.[]|getNote]|add) else "" end);
-                  .[]|getMessage
-                ')
-                if [[ -z "$DONT_REPORT_ERROR" ]]; then
-                  echo "$errors"
-                else
-                  # just print in plain text
-                  echo "$errors" | sed 's/^:://'
-                  echo # add one empty line
-                fi
-                failedFiles+=("$dest")
-              fi
-            fi
-          done < <(git diff -z --name-status ${{ env.baseRev }} -- '*.nix')
-
-          if [[ -n "$DONT_REPORT_ERROR" ]]; then
-            echo "Edited the PR but didn't change the base branch, only the description/title."
-            echo "Not reporting errors again to avoid duplication."
-            echo # add one empty line
-          fi
-
-          if (( "${#failedFiles[@]}" > 0 )); then
-            echo "Some new/changed Nix files don't pass nixf-tidy."
-            echo "See ${{ github.event.pull_request.html_url }}/files for reported errors."
-            echo "If you believe this is a false positive, ping @Aleksanaa and @inclyc in this PR."
-            exit 1
-          fi

.github/workflows/check-shell.yml

@@ -1,29 +0,0 @@
-name: "Check shell"
-
-on:
-  pull_request_target:
-
-permissions: {}
-
-jobs:
-  x86_64-linux:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-        with:
-          # pull_request_target checks out the base branch by default
-          ref: refs/pull/${{ github.event.pull_request.number }}/merge
-      - uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
-      - name: Build shell
-        run: nix-build shell.nix
-
-  aarch64-darwin:
-    runs-on: macos-latest
-    steps:
-      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-        with:
-          # pull_request_target checks out the base branch by default
-          ref: refs/pull/${{ github.event.pull_request.number }}/merge
-      - uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
-      - name: Build shell
-        run: nix-build shell.nix

.github/workflows/editorconfig.yml

@@ -1,41 +0,0 @@
-name: "Checking EditorConfig"
-
-permissions: read-all
-
-on:
-  # avoids approving first time contributors
-  pull_request_target:
-    branches-ignore:
-      - 'release-**'
-
-jobs:
-  tests:
-    runs-on: ubuntu-latest
-    if: "github.repository_owner == 'NixOS' && !contains(github.event.pull_request.title, '[skip treewide]')"
-    steps:
-    - name: Get list of changed files from PR
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      run: |
-        gh api \
-          repos/NixOS/nixpkgs/pulls/${{github.event.number}}/files --paginate \
-          | jq '.[] | select(.status != "removed") | .filename' \
-          > "$HOME/changed_files"
-    - name: print list of changed files
-      run: |
-        cat "$HOME/changed_files"
-    - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-      with:
-        # pull_request_target checks out the base branch by default
-        ref: refs/pull/${{ github.event.pull_request.number }}/merge
-    - uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
-      with:
-        # nixpkgs commit is pinned so that it doesn't break
-        # editorconfig-checker 2.4.0
-        nix_path: nixpkgs=https://github.com/NixOS/nixpkgs/archive/c473cc8714710179df205b153f4e9fa007107ff9.tar.gz
-    - name: Checking EditorConfig
-      run: |
-        cat "$HOME/changed_files" | nix-shell -p editorconfig-checker --run 'xargs -r editorconfig-checker -disable-indent-size'
-    - if: ${{ failure() }}
-      run: |
-        echo "::error :: Hey! It looks like your changes don't follow our editorconfig settings. Read https://editorconfig.org/#download to configure your editor so you never see this error again."

.github/workflows/labels.yml

@@ -1,24 +0,0 @@
-name: "Label PR"
-
-on:
-  pull_request_target:
-    types: [edited, opened, synchronize, reopened]
-
-# WARNING:
-# When extending this action, be aware that $GITHUB_TOKEN allows some write
-# access to the GitHub API. This means that it should not evaluate user input in
-# a way that allows code injection.
-
-permissions:
-  contents: read
-  pull-requests: write
-
-jobs:
-  labels:
-    runs-on: ubuntu-latest
-    if: "github.repository_owner == 'NixOS' && !contains(github.event.pull_request.title, '[skip treewide]')"
-    steps:
-    - uses: actions/labeler@8558fd74291d67161a8a78ce36a881fa63b766a9 # v5.0.0
-      with:
-        repo-token: ${{ secrets.GITHUB_TOKEN }}
-        sync-labels: true

.github/workflows/manual-nixos.yml

@@ -1,31 +0,0 @@
-name: "Build NixOS manual"
-
-permissions: read-all
-
-on:
-  pull_request_target:
-    branches:
-      - master
-    paths:
-      - 'nixos/**'
-
-jobs:
-  nixos:
-    runs-on: ubuntu-latest
-    if: github.repository_owner == 'NixOS'
-    steps:
-      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-        with:
-          # pull_request_target checks out the base branch by default
-          ref: refs/pull/${{ github.event.pull_request.number }}/merge
-      - uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
-        with:
-          # explicitly enable sandbox
-          extra_nix_config: sandbox = true
-      - uses: cachix/cachix-action@ad2ddac53f961de1989924296a1f236fcfbaa4fc # v15
-        with:
-          # This cache is for the nixpkgs repo checks and should not be trusted or used elsewhere.
-          name: nixpkgs-ci
-          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
-      - name: Building NixOS manual
-        run: NIX_PATH=nixpkgs=$(pwd) nix-build --option restrict-eval true nixos/release.nix -A manual.x86_64-linux

.github/workflows/manual-nixpkgs.yml

@@ -1,33 +0,0 @@
-name: "Build Nixpkgs manual"
-
-permissions: read-all
-
-on:
-  pull_request_target:
-    branches:
-      - master
-    paths:
-      - 'doc/**'
-      - 'lib/**'
-      - 'pkgs/tools/nix/nixdoc/**'
-
-jobs:
-  nixpkgs:
-    runs-on: ubuntu-latest
-    if: github.repository_owner == 'NixOS'
-    steps:
-      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-        with:
-          # pull_request_target checks out the base branch by default
-          ref: refs/pull/${{ github.event.pull_request.number }}/merge
-      - uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
-        with:
-          # explicitly enable sandbox
-          extra_nix_config: sandbox = true
-      - uses: cachix/cachix-action@ad2ddac53f961de1989924296a1f236fcfbaa4fc # v15
-        with:
-          # This cache is for the nixpkgs repo checks and should not be trusted or used elsewhere.
-          name: nixpkgs-ci
-          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
-      - name: Building Nixpkgs manual
-        run: NIX_PATH=nixpkgs=$(pwd) nix-build --option restrict-eval true pkgs/top-level/release.nix -A manual -A manual.tests

.github/workflows/nix-parse.yml

@@ -1,42 +0,0 @@
-name: "Check whether nix files are parseable"
-
-permissions: read-all
-
-on:
-  # avoids approving first time contributors
-  pull_request_target:
-    branches-ignore:
-      - 'release-**'
-
-jobs:
-  tests:
-    runs-on: ubuntu-latest
-    if: "github.repository_owner == 'NixOS' && !contains(github.event.pull_request.title, '[skip treewide]')"
-    steps:
-    - name: Get list of changed files from PR
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      run: |
-        gh api \
-          repos/NixOS/nixpkgs/pulls/${{github.event.number}}/files --paginate \
-          | jq --raw-output '.[] | select(.status != "removed" and (.filename | endswith(".nix"))) | .filename' \
-          > "$HOME/changed_files"
-        if [[ -s "$HOME/changed_files" ]]; then
-          echo "CHANGED_FILES=$HOME/changed_files" > "$GITHUB_ENV"
-        fi
-    - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-      with:
-        # pull_request_target checks out the base branch by default
-        ref: refs/pull/${{ github.event.pull_request.number }}/merge
-      if: ${{ env.CHANGED_FILES && env.CHANGED_FILES != '' }}
-    - uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
-      with:
-        nix_path: nixpkgs=channel:nixpkgs-unstable
-    - name: Parse all changed or added nix files
-      run: |
-        ret=0
-        while IFS= read -r file; do
-          out="$(nix-instantiate --parse "$file")" || { echo "$out" && ret=1; }
-        done < "$HOME/changed_files"
-        exit "$ret"
-      if: ${{ env.CHANGED_FILES && env.CHANGED_FILES != '' }}

.github/workflows/no-channel.yml

@@ -1,26 +0,0 @@
-name: "No channel PR"
-
-on:
-  pull_request:
-    branches:
-      - 'nixos-**'
-      - 'nixpkgs-**'
-
-permissions:
-  contents: read
-
-jobs:
-  fail:
-    permissions:
-      contents: none
-    name: "This PR is is targeting a channel branch"
-    runs-on: ubuntu-latest
-    steps:
-    - run: |
-        cat <<EOF
-        The nixos-* and nixpkgs-* branches are pushed to by the channel
-        release script and should not be merged into directly.
-
-        Please target the equivalent release-* branch or master instead.
-        EOF
-        exit 1

.github/workflows/ofborg-pending.yml

@@ -1,33 +0,0 @@
-name: "Set pending OfBorg status"
-on:
-  pull_request_target:
-
-# Sets the ofborg-eval status to "pending" to signal that we are waiting for
-# OfBorg even if it is running late. The status will be overwritten by OfBorg
-# once it starts evaluation.
-
-# WARNING:
-# When extending this action, be aware that $GITHUB_TOKEN allows (restricted) write access to
-# the GitHub repository. This means that it should not evaluate user input in a
-# way that allows code injection.
-
-permissions:
-  contents: read
-
-jobs:
-  action:
-    if: github.repository_owner == 'NixOS'
-    permissions:
-      statuses: write
-    runs-on: ubuntu-latest
-    steps:
-    - name: "Set pending OfBorg status"
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      run: |
-        curl \
-          -X POST \
-          -H "Accept: application/vnd.github.v3+json" \
-          -H "Authorization: Bearer $GITHUB_TOKEN" \
-          -d '{"context": "ofborg-eval", "state": "pending", "description": "Waiting for OfBorg..."}' \
-          "https://api.github.com/repos/NixOS/nixpkgs/commits/${{ github.event.pull_request.head.sha }}/statuses"

.github/workflows/periodic-merge-24h.yml

@@ -1,60 +0,0 @@
-# This action periodically merges base branches into staging branches.
-# This is done to
-#  * prevent conflicts or rather resolve them early
-#  * make all potential breakage happen on the staging branch
-#  * and make sure that all major rebuilds happen before the staging
-#    branch get’s merged back into its base branch.
-
-name: "Periodic Merges (24h)"
-
-
-on:
-  schedule:
-    # * is a special character in YAML so you have to quote this string
-    # Merge every 24 hours
-    - cron:  '0 0 * * *'
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  periodic-merge:
-    permissions:
-      contents: write  # for devmasx/merge-branch to merge branches
-      pull-requests: write  # for peter-evans/create-or-update-comment to create or update comment
-    if: github.repository_owner == 'NixOS'
-    runs-on: ubuntu-latest
-    strategy:
-      # don't fail fast, so that all pairs are tried
-      fail-fast: false
-      # certain branches need to be merged in order, like master->staging-next->staging
-      # and disabling parallelism ensures the order of the pairs below.
-      max-parallel: 1
-      matrix:
-        pairs:
-          - from: master
-            into: haskell-updates
-          - from: release-24.05
-            into: staging-next-24.05
-          - from: staging-next-24.05
-            into: staging-24.05
-    name: ${{ matrix.pairs.from }} → ${{ matrix.pairs.into }}
-    steps:
-      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-
-      - name: ${{ matrix.pairs.from }} → ${{ matrix.pairs.into }}
-        uses: devmasx/merge-branch@854d3ac71ed1e9deb668e0074781b81fdd6e771f # 1.4.0
-        with:
-          type: now
-          from_branch: ${{ matrix.pairs.from }}
-          target_branch: ${{ matrix.pairs.into }}
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Comment on failure
-        uses: peter-evans/create-or-update-comment@71345be0265236311c031f5c7866368bd1eff043 # v4.0.0
-        if: ${{ failure() }}
-        with:
-          issue-number: 105153
-          body: |
-            Periodic merge from `${{ matrix.pairs.from }}` into `${{ matrix.pairs.into }}` has [failed](https://github.com/NixOS/nixpkgs/actions/runs/${{ github.run_id }}).

.github/workflows/periodic-merge-6h.yml

@@ -1,58 +0,0 @@
-# This action periodically merges base branches into staging branches.
-# This is done to
-#  * prevent conflicts or rather resolve them early
-#  * make all potential breakage happen on the staging branch
-#  * and make sure that all major rebuilds happen before the staging
-#    branch get’s merged back into its base branch.
-
-name: "Periodic Merges (6h)"
-
-
-on:
-  schedule:
-    # * is a special character in YAML so you have to quote this string
-    # Merge every 6 hours
-    - cron:  '0 */6 * * *'
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  periodic-merge:
-    permissions:
-      contents: write  # for devmasx/merge-branch to merge branches
-      pull-requests: write  # for peter-evans/create-or-update-comment to create or update comment
-    if: github.repository_owner == 'NixOS'
-    runs-on: ubuntu-latest
-    strategy:
-      # don't fail fast, so that all pairs are tried
-      fail-fast: false
-      # certain branches need to be merged in order, like master->staging-next->staging
-      # and disabling parallelism ensures the order of the pairs below.
-      max-parallel: 1
-      matrix:
-        pairs:
-          - from: master
-            into: staging-next
-          - from: staging-next
-            into: staging
-    name: ${{ matrix.pairs.from }} → ${{ matrix.pairs.into }}
-    steps:
-      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-
-      - name: ${{ matrix.pairs.from }} → ${{ matrix.pairs.into }}
-        uses: devmasx/merge-branch@854d3ac71ed1e9deb668e0074781b81fdd6e771f # 1.4.0
-        with:
-          type: now
-          from_branch: ${{ matrix.pairs.from }}
-          target_branch: ${{ matrix.pairs.into }}
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Comment on failure
-        uses: peter-evans/create-or-update-comment@71345be0265236311c031f5c7866368bd1eff043 # v4.0.0
-        if: ${{ failure() }}
-        with:
-          issue-number: 105153
-          body: |
-            Periodic merge from `${{ matrix.pairs.from }}` into `${{ matrix.pairs.into }}` has [failed](https://github.com/NixOS/nixpkgs/actions/runs/${{ github.run_id }}).

.github/workflows/update-terraform-providers.yml

@@ -1,69 +0,0 @@
-name: "Update terraform-providers"
-
-on:
-  #schedule:
-  #  - cron: "0 3 * * *"
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  tf-providers:
-    permissions:
-      contents: write # for peter-evans/create-pull-request to create branch
-      pull-requests: write # for peter-evans/create-pull-request to create a PR
-    if: github.repository_owner == 'NixOS' && github.ref == 'refs/heads/master' # ensure workflow_dispatch only runs on master
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-      - uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
-        with:
-          nix_path: nixpkgs=channel:nixpkgs-unstable
-      - name: setup
-        id: setup
-        run: |
-          echo "title=terraform-providers: update $(date -u +"%Y-%m-%d")" >> $GITHUB_OUTPUT
-      - name: update terraform-providers
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: |
-          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
-          git config user.name "github-actions[bot]"
-          echo | nix-shell \
-            maintainers/scripts/update.nix \
-            --argstr commit true \
-            --argstr keep-going true \
-            --argstr max-workers 2 \
-            --argstr path terraform-providers
-      - name: get failed updates
-        run: |
-          echo 'FAILED<<EOF' >> $GITHUB_ENV
-          git ls-files --others >> $GITHUB_ENV
-          echo 'EOF' >> $GITHUB_ENV
-      # cleanup logs of failed updates so they aren't included in the PR
-      - name: clean repo
-        run: |
-          git clean -f
-      - name: create PR
-        uses: peter-evans/create-pull-request@c5a7806660adbe173f04e3e038b0ccdcd758773c # v6.1.0
-        with:
-          body: |
-            Automatic update by [update-terraform-providers](https://github.com/NixOS/nixpkgs/blob/master/.github/workflows/update-terraform-providers.yml) action.
-
-            https://github.com/NixOS/nixpkgs/actions/runs/${{ github.run_id }}
-
-            These providers failed to update:
-            ```
-            ${{ env.FAILED }}
-            ```
-
-            Check that all providers build with:
-            ```
-            @ofborg build opentofu.full
-            ```
-            If there is more than ten commits in the PR `ofborg` won't build it automatically and you will need to use the above command.
-          branch: terraform-providers-update
-          delete-branch: false
-          title: ${{ steps.setup.outputs.title }}
-          token: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -2,37 +2,16 @@
 ,*
 .*.swp
 .*.swo
-.\#*
-\#*\#
-.idea/
-.nixos-test-history
-.vscode/
-.helix/
-outputs/
-result-*
 result
-repl-result-*
-tags
-!pkgs/development/python-modules/result
+result-*
 /doc/NEWS.html
 /doc/NEWS.txt
 /doc/manual.html
 /doc/manual.pdf
-/source/
 .version-suffix
-.direnv
-.envrc
 
 .DS_Store
-.mypy_cache
-__pycache__
 
 /pkgs/development/libraries/qt-5/*/tmp/
 /pkgs/desktops/kde-5/*/tmp/
 /pkgs/development/mobile/androidenv/xml/*
-
-# generated by pkgs/common-updater/update-script.nix
-update-git-commits.txt
-
-# JetBrains IDEA module declaration file
-/nixpkgs.iml

.mailmap

@@ -1,17 +0,0 @@
-ajs124 <git@ajs124.de> <ajs124@users.noreply.github.com>
-Anderson Torres <torres.anderson.85@protonmail.com>
-Daniel Løvbrøtte Olsen <me@dandellion.xyz> <daniel.olsen99@gmail.com>
-Fabian Affolter <mail@fabian-affolter.ch> <fabian@affolter-engineering.ch>
-Janne Heß <janne@hess.ooo> <dasJ@users.noreply.github.com>
-Jörg Thalheim <joerg@thalheim.io> <Mic92@users.noreply.github.com>
-Martin Weinelt <hexa@darmstadt.ccc.de> <mweinelt@users.noreply.github.com>
-R. RyanTM <ryantm-bot@ryantm.com>
-Robert Hensing <robert@roberthensing.nl> <roberth@users.noreply.github.com>
-Sandro Jäckel <sandro.jaeckel@gmail.com>
-Sandro Jäckel <sandro.jaeckel@gmail.com> <sandro.jaeckel@sap.com>
-superherointj <5861043+superherointj@users.noreply.github.com>
-Tomodachi94 <tomodachi94@protonmail.com> Tomo <68489118+Tomodachi94@users.noreply.github.com>
-Vladimír Čunát <v@cunat.cz> <vcunat@gmail.com>
-Vladimír Čunát <v@cunat.cz> <vladimir.cunat@nic.cz>
-Yifei Sun <ysun@hey.com> StepBroBD <Hi@StepBroBD.com>
-Yifei Sun <ysun@hey.com> <ysun+git@stepbrobd.com>

.version

@@ -1 +0,0 @@
-lib/.version

.version

@@ -0,0 +1 @@
+20.03

CONTRIBUTING.md

@@ -1,637 +0,0 @@
-# Contributing to Nixpkgs
-
-This document is for people wanting to contribute to the implementation of Nixpkgs.
-This involves interacting with implementation changes that are proposed using [GitHub](https://github.com/) [pull requests](https://docs.github.com/pull-requests) to the [Nixpkgs](https://github.com/nixos/nixpkgs/) repository (which you're in right now).
-
-As such, a GitHub account is recommended, which you can sign up for [here](https://github.com/signup).
-See [here](https://discourse.nixos.org/t/about-the-patches-category/477) for how to contribute without a GitHub account.
-
-Additionally this document assumes that you already know how to use GitHub and Git.
-If that's not the case, we recommend learning about it first [here](https://docs.github.com/en/get-started/quickstart/hello-world).
-
-## Overview
-[overview]: #overview
-
-This file contains general contributing information, but individual parts also have more specific information to them in their respective `README.md` files, linked here:
-- [`lib`](./lib/README.md): Sources and documentation of the [library functions](https://nixos.org/manual/nixpkgs/stable/#chap-functions)
-- [`maintainers`](./maintainers/README.md): Nixpkgs maintainer and team listings, maintainer scripts
-- [`pkgs`](./pkgs/README.md): Package and [builder](https://nixos.org/manual/nixpkgs/stable/#part-builders) definitions
-- [`doc`](./doc/README.md): Sources and infrastructure for the [Nixpkgs manual](https://nixos.org/manual/nixpkgs/stable/)
-- [`nixos`](./nixos/README.md): Implementation of [NixOS](https://nixos.org/manual/nixos/stable/)
-
-# How to's
-
-## How to create pull requests
-[pr-create]: #how-to-create-pull-requests
-
-This section describes in some detail how changes can be made and proposed with pull requests.
-
-> [!Note]
-> Be aware that contributing implies licensing those contributions under the terms of [COPYING](./COPYING), an MIT-like license.
-
-0. Set up a local version of Nixpkgs to work with using GitHub and Git
-   1. [Fork](https://docs.github.com/en/get-started/quickstart/fork-a-repo#forking-a-repository) the [Nixpkgs repository](https://github.com/nixos/nixpkgs/).
-   1. [Clone the forked repository](https://docs.github.com/en/get-started/quickstart/fork-a-repo#cloning-your-forked-repository) into a local `nixpkgs` directory.
-   1. [Configure the upstream Nixpkgs repository](https://docs.github.com/en/get-started/quickstart/fork-a-repo#configuring-git-to-sync-your-fork-with-the-upstream-repository).
-
-1. Figure out the branch that should be used for this change by going through [this section][branch].
-   If in doubt use `master`, that's where most changes should go.
-   This can be changed later by [rebasing][rebase].
-
-2. Create and switch to a new Git branch, ideally such that:
-   - The name of the branch hints at the change you'd like to implement, e.g. `update-hello`.
-   - The base of the branch includes the most recent changes on the base branch from step 1, we'll assume `master` here.
-
-   ```bash
-   # Make sure you have the latest changes from upstream Nixpkgs
-   git fetch upstream
-
-   # Create and switch to a new branch based off the master branch in Nixpkgs
-   git switch --create update-hello upstream/master
-   ```
-
-   To avoid having to download and build potentially many derivations, at the expense of using a potentially outdated version, you can base the branch off a specific [Git commit](https://www.git-scm.com/docs/gitglossary#def_commit) instead:
-   - The commit of the latest `nixpkgs-unstable` channel, available [here](https://channels.nixos.org/nixpkgs-unstable/git-revision).
-   - The commit of a local Nixpkgs downloaded using [nix-channel](https://nixos.org/manual/nix/stable/command-ref/nix-channel), available using `nix-instantiate --eval --expr '(import <nixpkgs/lib>).trivial.revisionWithDefault null'`
-   - If you're using NixOS, the commit of your NixOS installation, available with `nixos-version --revision`.
-
-   Once you have an appropriate commit you can use it instead of `upstream/master` in the above command:
-   ```bash
-   git switch --create update-hello <the desired base commit>
-   ```
-
-3. Make the desired changes in the local Nixpkgs repository using an editor of your choice.
-   Make sure to:
-   - Adhere to both the [general code conventions][code-conventions], and the code conventions specific to the part you're making changes to.
-     See the [overview section][overview] for more specific information.
-   - Test the changes.
-     See the [overview section][overview] for more specific information.
-   - If necessary, document the change.
-     See the [overview section][overview] for more specific information.
-
-4. Commit your changes using `git commit`.
-   Make sure to adhere to the [commit conventions](#commit-conventions).
-
-   Repeat the steps 3-4 as many times as necessary.
-   Advance to the next step if all the commits (viewable with `git log`) make sense together.
-
-5. Push your commits to your fork of Nixpkgs.
-   ```
-   git push --set-upstream origin HEAD
-   ```
-
-   The above command will output a link that allows you to directly quickly do the next step:
-   ```
-   remote: Create a pull request for 'update-hello' on GitHub by visiting:
-   remote:      https://github.com/myUser/nixpkgs/pull/new/update-hello
-   ```
-
-6. [Create a pull request](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/creating-a-pull-request#creating-the-pull-request) from the new branch in your Nixpkgs fork to the upstream Nixpkgs repository.
-   Use the branch from step 2 as the pull requests base branch.
-   Go through the [pull request template](#pull-request-template) in the pre-filled default description.
-
-7. Respond to review comments, potential CI failures and potential merge conflicts by updating the pull request.
-   Always keep the pull request in a mergeable state.
-
-   The custom [OfBorg](https://github.com/NixOS/ofborg) CI system will perform various checks to help ensure code quality, whose results you can see at the bottom of the pull request.
-   See [the OfBorg Readme](https://github.com/NixOS/ofborg#readme) for more details.
-
-   - To add new commits, repeat steps 3-4 and push the result using
-     ```
-     git push
-     ```
-
-   - To change existing commits you will have to [rewrite Git history](https://git-scm.com/book/en/v2/Git-Tools-Rewriting-History).
-     Useful Git commands that can help a lot with this are `git commit --patch --amend` and `git rebase --interactive`.
-     With a rewritten history you need to force-push the commits using
-     ```
-     git push --force-with-lease
-     ```
-
-   - In case of merge conflicts you will also have to [rebase the branch](https://git-scm.com/book/en/v2/Git-Branching-Rebasing) on top of current `master`.
-     Sometimes this can be done [on GitHub directly](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/keeping-your-pull-request-in-sync-with-the-base-branch#updating-your-pull-request-branch), but if not you will have to rebase locally using
-     ```
-     git fetch upstream
-     git rebase upstream/master
-     git push --force-with-lease
-     ```
-
-   - If you need to change the base branch of the pull request, you can do so by [rebasing][rebase].
-
-8. If your pull request is merged and [acceptable for releases][release-acceptable] you may [backport][pr-backport] the pull request.
-
-### Pull request template
-[pr-template]: #pull-request-template
-
-The pull request template helps determine what steps have been made for a contribution so far, and will help guide maintainers on the status of a change. The motivation section of the PR should include any extra details the title does not address and link any existing issues related to the pull request.
-
-When a PR is created, it will be pre-populated with some checkboxes detailed below:
-
-#### Tested using sandboxing
-
-When sandbox builds are enabled, Nix will set up an isolated environment for each build process.
-It is used to remove further hidden dependencies set by the build environment to improve reproducibility.
-This includes access to the network during the build outside of `fetch*` functions and files outside the Nix store.
-Depending on the operating system, access to other resources is blocked as well (e.g., inter-process communication is isolated on Linux); see [sandbox](https://nixos.org/manual/nix/stable/command-ref/conf-file#conf-sandbox) in the Nix manual for details.
-
-In pull requests for [nixpkgs](https://github.com/NixOS/nixpkgs/) people are asked to test builds with sandboxing enabled (see `Tested using sandboxing` in the pull request template) because in [Hydra](https://nixos.org/hydra/) sandboxing is also used.
-
-If you are on Linux, sandboxing is enabled by default.
-On other platforms, sandboxing is disabled by default due to a small performance hit on each build.
-
-Please enable sandboxing **before** building the package by adding the following to: `/etc/nix/nix.conf`:
-
-  ```ini
-  sandbox = true
-  ```
-
-#### Built on platform(s)
-
-Many Nix packages are designed to run on multiple platforms. As such, it’s important to let the maintainer know which platforms your changes have been tested on. It’s not always practical to test a change on all platforms, and is not required for a pull request to be merged. Only check the systems you tested the build on in this section.
-
-#### Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
-
-Packages with automated tests are much more likely to be merged in a timely fashion because it doesn’t require as much manual testing by the maintainer to verify the functionality of the package. If there are existing tests for the package, they should be run to verify your changes do not break the tests. Tests can only be run on Linux. For more details on writing and running tests, see the [section in the NixOS manual](https://nixos.org/nixos/manual/index.html#sec-nixos-tests).
-
-#### Tested compilation of all pkgs that depend on this change using `nixpkgs-review`
-
-If you are modifying a package, you can use `nixpkgs-review` to make sure all packages that depend on the updated package still compile correctly. The `nixpkgs-review` utility can look for and build all dependencies either based on uncommitted changes with the `wip` option or specifying a GitHub pull request number.
-
-Review changes from pull request number 12345:
-
-```ShellSession
-nix-shell -p nixpkgs-review --run "nixpkgs-review pr 12345"
-```
-
-Alternatively, with flakes (and analogously for the other commands below):
-
-```ShellSession
-nix run nixpkgs#nixpkgs-review -- pr 12345
-```
-
-Review uncommitted changes:
-
-```ShellSession
-nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
-```
-
-Review changes from last commit:
-
-```ShellSession
-nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD"
-```
-
-#### Tested execution of all binary files (usually in `./result/bin/`)
-
-It’s important to test any executables generated by a build when you change or create a package in nixpkgs. This can be done by looking in `./result/bin` and running any files in there, or at a minimum, the main executable for the package. For example, if you make a change to texlive, you probably would only check the binaries associated with the change you made rather than testing all of them.
-
-#### Meets Nixpkgs contribution standards
-
-The last checkbox is about whether it fits the guidelines in this `CONTRIBUTING.md` file. This document has detailed information on standards the Nix community has for commit messages, reviews, licensing of contributions you make to the project, etc... Everyone should read and understand the standards the community has for contributing before submitting a pull request.
-
-### Rebasing between branches (i.e. from master to staging)
-[rebase]: #rebasing-between-branches-ie-from-master-to-staging
-
-From time to time, changes between branches must be rebased, for example, if the
-number of new rebuilds they would cause is too large for the target branch. When
-rebasing, care must be taken to include only the intended changes, otherwise
-many CODEOWNERS will be inadvertently requested for review. To achieve this,
-rebasing should not be performed directly on the target branch, but on the merge
-base between the current and target branch. As an additional precautionary measure,
-you should temporarily mark the PR as draft for the duration of the operation.
-This reduces the probability of mass-pinging people. (OfBorg might still
-request a couple of persons for reviews though.)
-
-In the following example, we assume that the current branch, called `feature`,
-is based on `master`, and we rebase it onto the merge base between
-`master` and `staging` so that the PR can eventually be retargeted to
-`staging` without causing a mess. The example uses `upstream` as the remote for `NixOS/nixpkgs.git`
-while `origin` is the remote you are pushing to.
-
-
-```console
-# Rebase your commits onto the common merge base
-git rebase --onto upstream/staging... upstream/master
-# Force push your changes
-git push origin feature --force-with-lease
-```
-
-The syntax `upstream/staging...` is equivalent to `upstream/staging...HEAD` and
-stands for the merge base between `upstream/staging` and `HEAD` (hence between
-`upstream/staging` and `upstream/master`).
-
-Then change the base branch in the GitHub PR using the *Edit* button in the upper
-right corner, and switch from `master` to `staging`. *After* the PR has been
-retargeted it might be necessary to do a final rebase onto the target branch, to
-resolve any outstanding merge conflicts.
-
-```console
-# Rebase onto target branch
-git rebase upstream/staging
-# Review and fixup possible conflicts
-git status
-# Force push your changes
-git push origin feature --force-with-lease
-```
-
-#### Something went wrong and a lot of people were pinged
-
-It happens. Remember to be kind, especially to new contributors.
-There is no way back, so the pull request should be closed and locked
-(if possible). The changes should be re-submitted in a new PR, in which the people
-originally involved in the conversation need to manually be pinged again.
-No further discussion should happen on the original PR, as a lot of people
-are now subscribed to it.
-
-The following message (or a version thereof) might be left when closing to
-describe the situation, since closing and locking without any explanation
-is kind of rude:
-
-```markdown
-It looks like you accidentally mass-pinged a bunch of people, which are now subscribed
-and getting notifications for everything in this pull request. Unfortunately, they
-cannot be automatically unsubscribed from the issue (removing review request does not
-unsubscribe), therefore development cannot continue in this pull request anymore.
-
-Please open a new pull request with your changes, link back to this one and ping the
-people actually involved in here over there.
-
-In order to avoid this in the future, there are instructions for how to properly
-rebase between branches in our [contribution guidelines](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md#rebasing-between-branches-ie-from-master-to-staging).
-Setting your pull request to draft prior to rebasing is strongly recommended.
-In draft status, you can preview the list of people that are about to be requested
-for review, which allows you to sidestep this issue.
-This is not a bulletproof method though, as OfBorg still does review requests even on draft PRs.
-```
-
-## How to backport pull requests
-[pr-backport]: #how-to-backport-pull-requests
-
-Once a pull request has been merged into `master`, a backport pull request to the corresponding `release-YY.MM` branch can be created either automatically or manually.
-
-### Automatically backporting changes
-
-> [!Note]
-> You have to be a [Nixpkgs maintainer](./maintainers) to automatically create a backport pull request.
-
-Add the [`backport release-YY.MM` label](https://github.com/NixOS/nixpkgs/labels?q=backport) to the pull request on the `master` branch.
-This will cause [a GitHub Action](.github/workflows/backport.yml) to open a pull request to the `release-YY.MM` branch a few minutes later.
-This can be done on both open or already merged pull requests.
-
-### Manually backporting changes
-
-To manually create a backport pull request, follow [the standard pull request process][pr-create], with these notable differences:
-
-- Use `release-YY.MM` for the base branch, both for the local branch and the pull request.
-
-> [!Warning]
-> Do not use the `nixos-YY.MM` branch, that is a branch pointing to the tested release channel commit
-
-- Instead of manually making and committing the changes, use [`git cherry-pick -x`](https://git-scm.com/docs/git-cherry-pick) for each commit from the pull request you'd like to backport.
-  Either `git cherry-pick -x <commit>` when the reason for the backport is obvious (such as minor versions, fixes, etc.), otherwise use `git cherry-pick -xe <commit>` to add a reason for the backport to the commit message.
-  Here is [an example](https://github.com/nixos/nixpkgs/commit/5688c39af5a6c5f3d646343443683da880eaefb8) of this.
-
-> [!Warning]
-> Ensure the commits exists on the master branch.
-> In the case of squashed or rebased merges, the commit hash will change and the new commits can be found in the merge message at the bottom of the master pull request.
-
-- In the pull request description, link to the original pull request to `master`.
-  The pull request title should include `[YY.MM]` matching the release you're backporting to.
-
-- When the backport pull request is merged and you have the necessary privileges you can also replace the label `9.needs: port to stable` with `8.has: port to stable` on the original pull request.
-  This way maintainers can keep track of missing backports easier.
-
-## How to review pull requests
-[pr-review]: #how-to-review-pull-requests
-
-> [!Warning]
-> The following section is a draft, and the policy for reviewing is still being discussed in issues such as [#11166](https://github.com/NixOS/nixpkgs/issues/11166) and [#20836](https://github.com/NixOS/nixpkgs/issues/20836).
-
-The Nixpkgs project receives a fairly high number of contributions via GitHub pull requests. Reviewing and approving these is an important task and a way to contribute to the project.
-
-The high change rate of Nixpkgs makes any pull request that remains open for too long subject to conflicts that will require extra work from the submitter or the merger. Reviewing pull requests in a timely manner and being responsive to the comments is the key to avoid this issue. GitHub provides sort filters that can be used to see the [most recently](https://github.com/NixOS/nixpkgs/pulls?q=is%3Apr+is%3Aopen+sort%3Aupdated-desc) and the [least recently](https://github.com/NixOS/nixpkgs/pulls?q=is%3Apr+is%3Aopen+sort%3Aupdated-asc) updated pull requests. We highly encourage looking at [this list of ready to merge, unreviewed pull requests](https://github.com/NixOS/nixpkgs/pulls?q=is%3Apr+is%3Aopen+review%3Anone+status%3Asuccess+-label%3A%222.status%3A+work-in-progress%22+no%3Aproject+no%3Aassignee+no%3Amilestone).
-
-When reviewing a pull request, please always be nice and polite. Controversial changes can lead to controversial opinions, but it is important to respect every community member and their work.
-
-GitHub provides reactions as a simple and quick way to provide feedback to pull requests or any comments. The thumb-down reaction should be used with care and if possible accompanied with some explanation so the submitter has directions to improve their contribution.
-
-Pull request reviews should include a list of what has been reviewed in a comment, so other reviewers and mergers can know the state of the review.
-
-All the review template samples provided in this section are generic and meant as examples. Their usage is optional and the reviewer is free to adapt them to their liking.
-
-To get more information about how to review specific parts of Nixpkgs, refer to the documents linked to in the [overview section][overview].
-
-If a pull request contains documentation changes that might require feedback from the documentation team, ping [@NixOS/documentation-team](https://github.com/orgs/nixos/teams/documentation-team) on the pull request.
-
-If you consider having enough knowledge and experience in a topic and would like to be a long-term reviewer for related submissions, please contact the current reviewers for that topic. They will give you information about the reviewing process. The main reviewers for a topic can be hard to find as there is no list, but checking past pull requests to see who reviewed or git-blaming the code to see who committed to that topic can give some hints.
-
-Container system, boot system and library changes are some examples of the pull requests fitting this category.
-
-## How to merge pull requests
-[pr-merge]: #how-to-merge-pull-requests
-
-To streamline automated updates, leverage the nixpkgs-merge-bot by simply commenting `@NixOS/nixpkgs-merge-bot merge`. The bot will verify if the following conditions are met, refusing to merge otherwise:
-
-- the commenter that issued the command should be among the package maintainers;
-- the package should reside in `pkgs/by-name`.
-
-Further, nixpkgs-merge-bot will ensure all ofBorg checks (except the Darwin-related ones) are successfully completed before merging the pull request. Should the checks still be underway, the bot patiently waits for ofBorg to finish before attempting the merge again.
-
-For other pull requests, the *Nixpkgs committers* are people who have been given
-permission to merge.
-
-It is possible for community members that have enough knowledge and experience on a special topic to contribute by merging pull requests.
-
-In case the PR is stuck waiting for the original author to apply a trivial
-change (a typo, capitalisation change, etc.) and the author allowed the members
-to modify the PR, consider applying it yourself (or commit the existing review
-suggestion). You should pay extra attention to make sure the addition doesn't go
-against the idea of the original PR and would not be opposed by the author.
-
-<!--
-The following paragraphs about how to deal with unactive contributors is just a proposition and should be modified to what the community agrees to be the right policy.
-
-Please note that contributors with commit rights unactive for more than three months will have their commit rights revoked.
--->
-
-Please see the discussion in [GitHub nixpkgs issue #50105](https://github.com/NixOS/nixpkgs/issues/50105) for information on how to proceed to be granted this level of access.
-
-In a case a contributor definitively leaves the Nix community, they should create an issue or post on [Discourse](https://discourse.nixos.org) with references of packages and modules they maintain so the maintainership can be taken over by other contributors.
-
-# Flow of merged pull requests
-
-After a pull request is merged, it eventually makes it to the [official Hydra CI](https://hydra.nixos.org/).
-Hydra regularly evaluates and builds Nixpkgs, updating [the official channels](https://channels.nixos.org/) when specific Hydra jobs succeeded.
-See [Nix Channel Status](https://status.nixos.org/) for the current channels and their state.
-Here's a brief overview of the main Git branches and what channels they're used for:
-
-- `master`: The main branch, used for the unstable channels such as `nixpkgs-unstable`, `nixos-unstable` and `nixos-unstable-small`.
-- `release-YY.MM` (e.g. `release-24.05`): The NixOS release branches, used for the stable channels such as `nixos-24.05`, `nixos-24.05-small` and `nixpkgs-24.05-darwin`.
-
-When a channel is updated, a corresponding Git branch is also updated to point to the corresponding commit.
-So e.g. the [`nixpkgs-unstable` branch](https://github.com/nixos/nixpkgs/tree/nixpkgs-unstable) corresponds to the Git commit from the [`nixpkgs-unstable` channel](https://channels.nixos.org/nixpkgs-unstable).
-
-Nixpkgs in its entirety is tied to the NixOS release process, which is documented in the [NixOS Release Wiki](https://nixos.github.io/release-wiki/).
-
-See [this section][branch] to know when to use the release branches.
-
-## Staging
-[staging]: #staging
-
-The staging workflow exists to batch Hydra builds of many packages together.
-It is coordinated in the [Staging room](https://matrix.to/#/#staging:nixos.org) on Matrix.
-
-It works by directing commits that cause [mass rebuilds][mass-rebuild] to a separate `staging` branch that isn't directly built by Hydra.
-Regularly, the `staging` branch is _manually_ merged into a `staging-next` branch to be built by Hydra using the [`nixpkgs:staging-next` jobset](https://hydra.nixos.org/jobset/nixpkgs/staging-next).
-The `staging-next` branch should then only receive changes that fix Hydra builds;
-**for anything else, ask the [Staging room](https://matrix.to/#/#staging:nixos.org) first**.
-Once it is verified that there are no major regressions, it is merged into `master` using [a pull request](https://github.com/NixOS/nixpkgs/pulls?q=head%3Astaging-next).
-This is done manually in order to ensure it's a good use of Hydra's computing resources.
-By keeping the `staging-next` branch separate from `staging`, this batching does not block developers from merging changes into `staging`.
-
-In order for the `staging` and `staging-next` branches to be up-to-date with the latest commits on `master`, there are regular _automated_ merges from `master` into `staging-next` and `staging`.
-This is implemented using GitHub workflows [here](.github/workflows/periodic-merge-6h.yml) and [here](.github/workflows/periodic-merge-24h.yml).
-
-> [!Note]
-> Changes must be sufficiently tested before being merged into any branch.
-> Hydra builds should not be used as testing platform.
-
-Here is a Git history diagram showing the flow of commits between the three branches:
-```mermaid
-%%{init: {
-    'theme': 'base',
-    'themeVariables': {
-        'gitInv0': '#ff0000',
-        'gitInv1': '#ff0000',
-        'git2': '#ff4444',
-        'commitLabelFontSize': '15px'
-    },
-    'gitGraph': {
-        'showCommitLabel':true,
-        'mainBranchName': 'master',
-        'rotateCommitLabel': true
-    }
-} }%%
-gitGraph
-    commit id:" "
-    branch staging-next
-    branch staging
-
-    checkout master
-    checkout staging
-    checkout master
-    commit id:"    "
-    checkout staging-next
-    merge master id:"automatic"
-    checkout staging
-    merge staging-next id:"automatic "
-
-    checkout staging-next
-    merge staging type:HIGHLIGHT id:"manual"
-    commit id:"fixup"
-
-    checkout master
-    checkout staging
-    checkout master
-    commit id:"       "
-    checkout staging-next
-    merge master id:"automatic  "
-    checkout staging
-    merge staging-next id:"automatic   "
-
-    checkout staging-next
-    commit id:"fixup "
-    checkout master
-    merge staging-next type:HIGHLIGHT id:"manual (PR)"
-```
-
-
-Here's an overview of the different branches:
-
-| branch | `master` | `staging-next` | `staging` |
-| --- | --- | --- | --- |
-| Used for development | ✔️ | ❌ | ✔️ |
-| Built by Hydra | ✔️ | ✔️ | ❌ |
-| [Mass rebuilds][mass-rebuild] | ❌ | ⚠️  Only to fix Hydra builds | ✔️ |
-| Critical security fixes | ✔️ for non-mass-rebuilds | ✔️ for mass-rebuilds | ❌ |
-| Automatically merged into | `staging-next` | `staging` | - |
-| Manually merged into | - | `master` | `staging-next` |
-
-The staging workflow is used for all main branches, `master` and `release-YY.MM`, with corresponding names:
-- `master`/`release-YY.MM`
-- `staging`/`staging-YY.MM`
-- `staging-next`/`staging-next-YY.MM`
-
-# Conventions
-
-## Branch conventions
-<!-- This section is relevant to both contributors and reviewers -->
-[branch]: #branch-conventions
-
-Most changes should go to the `master` branch, but sometimes other branches should be used instead.
-Use the following decision process to figure out which one it should be:
-
-Is the change [acceptable for releases][release-acceptable] and do you wish to have the change in the release?
-- No: Use the `master` branch, do not backport the pull request.
-- Yes: Can the change be implemented the same way on the `master` and release branches?
-  For example, a packages major version might differ between the `master` and release branches, such that separate security patches are required.
-  - Yes: Use the `master` branch and [backport the pull request](#how-to-backport-pull-requests).
-  - No: Create separate pull requests to the `master` and `release-XX.YY` branches.
-
-Furthermore, if the change causes a [mass rebuild][mass-rebuild], use the appropriate staging branch instead:
-- Mass rebuilds to `master` should go to `staging` instead.
-- Mass rebuilds to `release-XX.YY` should go to `staging-XX.YY` instead.
-
-See [this section][staging] for more details about such changes propagate between the branches.
-
-### Changes acceptable for releases
-[release-acceptable]: #changes-acceptable-for-releases
-
-Only changes to supported releases may be accepted.
-The oldest supported release (`YYMM`) can be found using
-```
-nix-instantiate --eval -A lib.trivial.oldestSupportedRelease
-```
-
-The release branches should generally only receive backwards-compatible changes, both for the Nix expressions and derivations.
-Here are some examples of backwards-compatible changes that are okay to backport:
-- ✔️ New packages, modules and functions
-- ✔️ Security fixes
-- ✔️ Package version updates
-  - ✔️ Patch versions with fixes
-  - ✔️ Minor versions with new functionality, but no breaking changes
-
-In addition, major package version updates with breaking changes are also acceptable for:
-- ✔️ Services that would fail without up-to-date client software, such as `spotify`, `steam`, and `discord`
-- ✔️ Security critical applications, such as `firefox` and `chromium`
-
-### Changes causing mass rebuilds
-[mass-rebuild]: #changes-causing-mass-rebuilds
-
-Which changes cause mass rebuilds is not formally defined.
-In order to help the decision, CI automatically assigns [`rebuild` labels](https://github.com/NixOS/nixpkgs/labels?q=rebuild) to pull requests based on the number of packages they cause rebuilds for.
-As a rule of thumb, if the number of rebuilds is **over 500**, it can be considered a mass rebuild.
-To get a sense for what changes are considered mass rebuilds, see [previously merged pull requests to the staging branches](https://github.com/NixOS/nixpkgs/issues?q=base%3Astaging+-base%3Astaging-next+is%3Amerged).
-
-## Commit conventions
-[commit-conventions]: #commit-conventions
-
-- Create a commit for each logical unit.
-
-- Check for unnecessary whitespace with `git diff --check` before committing.
-
-- If you have commits `pkg-name: oh, forgot to insert whitespace`: squash commits in this case. Use `git rebase -i`.
-  See [Squashing Commits](https://git-scm.com/book/en/v2/Git-Tools-Rewriting-History#_squashing) for additional information.
-
-- For consistency, there should not be a period at the end of the commit message's summary line (the first line of the commit message).
-
-- When adding yourself as maintainer in the same pull request, make a separate
-  commit with the message `maintainers: add <handle>`.
-  Add the commit before those making changes to the package or module.
-  See [Nixpkgs Maintainers](./maintainers/README.md) for details.
-
-- Make sure you read about any commit conventions specific to the area you're touching. See:
-  - [Commit conventions](./pkgs/README.md#commit-conventions) for changes to `pkgs`.
-  - [Commit conventions](./lib/README.md#commit-conventions) for changes to `lib`.
-  - [Commit conventions](./nixos/README.md#commit-conventions) for changes to `nixos`.
-  - [Commit conventions](./doc/README.md#commit-conventions) for changes to `doc`, the Nixpkgs manual.
-
-### Writing good commit messages
-
-In addition to writing properly formatted commit messages, it's important to include relevant information so other developers can later understand *why* a change was made. While this information usually can be found by digging code, mailing list/Discourse archives, pull request discussions or upstream changes, it may require a lot of work.
-
-Package version upgrades usually allow for simpler commit messages, including attribute name, old and new version, as well as a reference to the relevant release notes/changelog. Every once in a while a package upgrade requires more extensive changes, and that subsequently warrants a more verbose message.
-
-Pull requests should not be squash merged in order to keep complete commit messages and GPG signatures intact and must not be when the change doesn't make sense as a single commit.
-
-## Code conventions
-[code-conventions]: #code-conventions
-
-### Release notes
-
-If you removed packages or made some major NixOS changes, write about it in the release notes for the next stable release in [`nixos/doc/manual/release-notes`](./nixos/doc/manual/release-notes).
-
-### File naming and organisation
-
-Names of files and directories should be in lowercase, with dashes between words — not in camel case. For instance, it should be `all-packages.nix`, not `allPackages.nix` or `AllPackages.nix`.
-
-### Syntax
-
-- Set up [editorconfig](https://editorconfig.org/) for your editor, such that [the settings](./.editorconfig) are automatically applied.
-
-- Use `lowerCamelCase` for variable names, not `UpperCamelCase`. Note, this rule does not apply to package attribute names, which instead follow the rules in [package naming](./pkgs/README.md#package-naming).
-
-- New files must be formatted by entering the `nix-shell` from the repository root and running `nixfmt`.
-
-- Functions should list their expected arguments as precisely as possible. That is, write
-
-  ```nix
-  { stdenv, fetchurl, perl }: <...>
-  ```
-
-  instead of
-
-  ```nix
-  args: with args; <...>
-  ```
-
-  or
-
-  ```nix
-  { stdenv, fetchurl, perl, ... }: <...>
-  ```
-
-  For functions that are truly generic in the number of arguments (such as wrappers around `mkDerivation`) that have some required arguments, you should write them using an `@`-pattern:
-
-  ```nix
-  { stdenv, doCoverageAnalysis ? false, ... } @ args:
-
-  stdenv.mkDerivation (args // {
-    foo = if doCoverageAnalysis then "bla" else "";
-  })
-  ```
-
-  instead of
-
-  ```nix
-  args:
-
-  args.stdenv.mkDerivation (args // {
-    foo = if args ? doCoverageAnalysis && args.doCoverageAnalysis then "bla" else "";
-  })
-  ```
-
-- Unnecessary string conversions should be avoided. Do
-
-  ```nix
-  {
-    rev = version;
-  }
-  ```
-
-  instead of
-
-  ```nix
-  {
-    rev = "${version}";
-  }
-  ```
-
-- Building lists conditionally _should_ be done with `lib.optional(s)` instead of using `if cond then [ ... ] else null` or `if cond then [ ... ] else [ ]`.
-
-  ```nix
-  {
-    buildInputs = lib.optional stdenv.isDarwin iconv;
-  }
-  ```
-
-  instead of
-
-  ```nix
-  {
-    buildInputs = if stdenv.isDarwin then [ iconv ] else null;
-  }
-  ```
-
-  As an exception, an explicit conditional expression with null can be used when fixing a important bug without triggering a mass rebuild.
-  If this is done a follow up pull request _should_ be created to change the code to `lib.optional(s)`.

COPYING

@@ -1,4 +1,4 @@
-Copyright (c) 2003-2024 Eelco Dolstra and the Nixpkgs/NixOS contributors
+Copyright (c) 2003-2020 Eelco Dolstra and the Nixpkgs/NixOS contributors
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the

README.md

@@ -1,20 +1,14 @@
 <p align="center">
-  <a href="https://nixos.org">
-    <picture>
-      <source media="(prefers-color-scheme: light)" srcset="https://raw.githubusercontent.com/NixOS/nixos-homepage/main/public/logo/nixos-hires.png">
-      <source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/NixOS/nixos-artwork/master/logo/nixos-white.png">
-      <img src="https://raw.githubusercontent.com/NixOS/nixos-homepage/main/public/logo/nixos-hires.png" width="500px" alt="NixOS logo">
-    </picture>
-  </a>
+  <a href="https://nixos.org/nixos"><img src="https://nixos.org/logo/nixos-hires.png" width="500px" alt="NixOS logo" /></a>
 </p>
 
 <p align="center">
-  <a href="https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md"><img src="https://img.shields.io/github/contributors-anon/NixOS/nixpkgs" alt="Contributors badge" /></a>
-  <a href="https://opencollective.com/nixos"><img src="https://opencollective.com/nixos/tiers/supporter/badge.svg?label=supporters&color=brightgreen" alt="Open Collective supporters" /></a>
+  <a href="https://www.codetriage.com/nixos/nixpkgs"><img src="https://www.codetriage.com/nixos/nixpkgs/badges/users.svg" alt="Code Triagers badge" /></a>
+  <a href="https://opencollective.com/nixos"><img src="https://opencollective.com/nixos/tiers/supporter/badge.svg?label=Supporter&color=brightgreen" alt="Open Collective supporters" /></a>
 </p>
 
 [Nixpkgs](https://github.com/nixos/nixpkgs) is a collection of over
-100,000 software packages that can be installed with the
+40,000 software packages that can be installed with the
 [Nix](https://nixos.org/nix/) package manager. It also implements
 [NixOS](https://nixos.org/nixos/), a purely-functional Linux distribution.
 
@@ -27,10 +21,9 @@
 # Community
 
 * [Discourse Forum](https://discourse.nixos.org/)
-* [Matrix Chat](https://matrix.to/#/#community:nixos.org)
+* [IRC - #nixos on freenode.net](irc://irc.freenode.net/#nixos)
 * [NixOS Weekly](https://weekly.nixos.org/)
-* [Official wiki](https://wiki.nixos.org/)
-* [Community-maintained list of ways to get in touch](https://wiki.nixos.org/wiki/Get_In_Touch#Chat) (Discord, Telegram, IRC, etc.)
+* [Community-maintained wiki](https://nixos.wiki/)
 
 # Other Project Repositories
 
@@ -40,7 +33,6 @@ the main ones:
 
 * [Nix](https://github.com/NixOS/nix) - the purely functional package manager
 * [NixOps](https://github.com/NixOS/nixops) - the tool to remotely deploy NixOS machines
-* [nixos-hardware](https://github.com/NixOS/nixos-hardware) - NixOS profiles to optimize settings for different hardware
 * [Nix RFCs](https://github.com/NixOS/rfcs) - the formal process for making substantial changes to the community
 * [NixOS homepage](https://github.com/NixOS/nixos-homepage) - the [NixOS.org](https://nixos.org) website
 * [hydra](https://github.com/NixOS/hydra) - our continuous integration system
@@ -52,29 +44,48 @@ Nixpkgs and NixOS are built and tested by our continuous integration
 system, [Hydra](https://hydra.nixos.org/).
 
 * [Continuous package builds for unstable/master](https://hydra.nixos.org/jobset/nixos/trunk-combined)
-* [Continuous package builds for the NixOS 24.05 release](https://hydra.nixos.org/jobset/nixos/release-24.05)
+* [Continuous package builds for the NixOS 20.03 release](https://hydra.nixos.org/jobset/nixos/release-20.03)
 * [Tests for unstable/master](https://hydra.nixos.org/job/nixos/trunk-combined/tested#tabs-constituents)
-* [Tests for the NixOS 24.05 release](https://hydra.nixos.org/job/nixos/release-24.05/tested#tabs-constituents)
+* [Tests for the NixOS 20.03 release](https://hydra.nixos.org/job/nixos/release-20.03/tested#tabs-constituents)
 
 Artifacts successfully built with Hydra are published to cache at
 https://cache.nixos.org/. When successful build and test criteria are
 met, the Nixpkgs expressions are distributed via [Nix
-channels](https://nixos.org/manual/nix/stable/package-management/channels.html).
+channels](https://nixos.org/nix/manual/#sec-channels).
 
 # Contributing
 
 Nixpkgs is among the most active projects on GitHub. While thousands
 of open issues and pull requests might seem a lot at first, it helps
 consider it in the context of the scope of the project. Nixpkgs
-describes how to build tens of thousands of pieces of software and implements a
+describes how to build over 40,000 pieces of software and implements a
 Linux distribution. The [GitHub Insights](https://github.com/NixOS/nixpkgs/pulse)
 page gives a sense of the project activity.
 
 Community contributions are always welcome through GitHub Issues and
-Pull Requests.
+Pull Requests. When pull requests are made, our tooling automation bot,
+[OfBorg](https://github.com/NixOS/ofborg) will perform various checks
+to help ensure expression quality.
+
+The *Nixpkgs maintainers* are people who have assigned themselves to
+maintain specific individual packages. We encourage people who care
+about a package to assign themselves as a maintainer. When a pull
+request is made against a package, OfBorg will notify the appropriate
+maintainer(s). The *Nixpkgs committers* are people who have been given
+permission to merge.
+
+Most contributions are based on and merged into these branches:
+
+* `master` is the main branch where all small contributions go
+* `staging` is branched from master, changes that have a big impact on
+  Hydra builds go to this branch
+* `staging-next` is branched from staging and only fixes to stabilize
+  and security fixes with a big impact on Hydra builds should be
+  contributed to this branch. This branch is merged into master when
+  deemed of sufficiently high quality
 
 For more information about contributing to the project, please visit
-the [contributing page](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md).
+the [contributing page](https://github.com/NixOS/nixpkgs/blob/master/.github/CONTRIBUTING.md).
 
 # Donations
 
@@ -84,8 +95,7 @@ Foundation](https://nixos.org/nixos/foundation.html). To ensure the
 continuity and expansion of the NixOS infrastructure, we are looking
 for donations to our organization.
 
-You can donate to the NixOS foundation through [SEPA bank
-transfers](https://nixos.org/donate.html) or by using Open Collective:
+You can donate to the NixOS foundation by using Open Collective:
 
 <a href="https://opencollective.com/nixos#support"><img src="https://opencollective.com/nixos/tiers/supporter.svg?width=890" /></a>
 

ci/README.md

@@ -1,12 +0,0 @@
-# CI support files
-
-This directory contains files to support CI, such as [GitHub Actions](https://github.com/NixOS/nixpkgs/tree/master/.github/workflows) and [Ofborg](https://github.com/nixos/ofborg).
-This is in contrast with [`maintainers/scripts`](`../maintainers/scripts`) which is for human use instead.
-
-## Pinned Nixpkgs
-
-CI may need certain packages from Nixpkgs.
-In order to ensure that the needed packages are generally available without building,
-[`pinned-nixpkgs.json`](./pinned-nixpkgs.json) contains a pinned Nixpkgs version tested by Hydra.
-
-Run [`update-pinned-nixpkgs.sh`](./update-pinned-nixpkgs.sh) to update it.

ci/pinned-nixpkgs.json

@@ -1,4 +0,0 @@
-{
-  "rev": "521d48afa9ae596930a95325529df27fa7135ff5",
-  "sha256": "0a1pa5azw990narsfipdli1wng4nc3vhvrp00hb8v1qfchcq7dc9"
-}

ci/update-pinned-nixpkgs.sh

@@ -1,17 +0,0 @@
-#!/usr/bin/env nix-shell
-#!nix-shell -i bash -p jq
-
-set -euo pipefail
-
-# https://stackoverflow.com/a/246128
-SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
-
-repo=https://github.com/nixos/nixpkgs
-branch=nixpkgs-unstable
-file=$SCRIPT_DIR/pinned-nixpkgs.json
-
-defaultRev=$(git ls-remote "$repo" refs/heads/"$branch" | cut -f1)
-rev=${1:-$defaultRev}
-sha256=$(nix-prefetch-url --unpack "$repo/archive/$rev.tar.gz" --name source)
-
-jq -n --arg rev "$rev" --arg sha256 "$sha256" '$ARGS.named' | tee /dev/stderr > $file

default.nix

@@ -14,7 +14,7 @@ if ! builtins ? nixVersion || builtins.compareVersions requiredVersion builtins.
     - If you installed Nix using the install script (https://nixos.org/nix/install),
       it is safe to upgrade by running it again:
 
-          curl -L https://nixos.org/nix/install | sh
+          curl https://nixos.org/nix/install | sh
 
     For more information, please see the NixOS release notes at
     https://nixos.org/nixos/manual or locally at

doc/.gitignore

@@ -0,0 +1,8 @@
+*.chapter.xml
+*.section.xml
+.version
+functions/library/generated
+functions/library/locations.xml
+highlightjs
+manual-full.xml
+out

doc/Makefile

@@ -0,0 +1,110 @@
+MD_TARGETS=$(addsuffix .xml, $(basename $(wildcard ./*.md ./**/*.md)))
+
+.PHONY: all
+all: validate format out/html/index.html out/epub/manual.epub
+
+.PHONY: debug
+debug:
+	nix-shell --run "xmloscopy --docbook5 ./manual.xml ./manual-full.xml"
+
+.PHONY: format
+format: doc-support/result
+	find . -iname '*.xml' -type f | while read f; do \
+		echo $$f ;\
+		xmlformat --config-file "doc-support/result/xmlformat.conf" -i $$f ;\
+	done
+
+.PHONY: fix-misc-xml
+fix-misc-xml:
+	find . -iname '*.xml' -type f \
+		-exec ../nixos/doc/varlistentry-fixer.rb {} ';'
+
+.PHONY: clean
+clean:
+	rm -f ${MD_TARGETS} doc-support/result .version manual-full.xml functions/library/locations.xml functions/library/generated
+	rm -rf ./out/ ./highlightjs
+
+.PHONY: validate
+validate: manual-full.xml doc-support/result
+	jing doc-support/result/docbook.rng manual-full.xml
+
+out/html/index.html: doc-support/result manual-full.xml style.css highlightjs
+	mkdir -p out/html
+	xsltproc \
+		--nonet --xinclude \
+		--output $@ \
+		doc-support/result/xhtml.xsl \
+		./manual-full.xml
+
+	mkdir -p out/html/highlightjs/
+	cp -r highlightjs out/html/
+
+	cp ./overrides.css out/html/
+	cp ./style.css out/html/style.css
+
+	mkdir -p out/html/images/callouts
+	cp doc-support/result/xsl/docbook/images/callouts/*.svg out/html/images/callouts/
+	chmod u+w -R out/html/
+
+out/epub/manual.epub: manual-full.xml
+	mkdir -p out/epub/scratch
+	xsltproc --nonet \
+		--output out/epub/scratch/ \
+		doc-support/result/epub.xsl \
+		./manual-full.xml
+
+	cp ./overrides.css out/epub/scratch/OEBPS
+	cp ./style.css out/epub/scratch/OEBPS
+	mkdir -p out/epub/scratch/OEBPS/images/callouts/
+	cp doc-support/result/xsl/docbook/images/callouts/*.svg out/epub/scratch/OEBPS/images/callouts/
+	echo "application/epub+zip" > mimetype
+	zip -0Xq "out/epub/manual.epub" mimetype
+	rm mimetype
+	cd "out/epub/scratch/" && zip -Xr9D "../manual.epub" *
+	rm -rf "out/epub/scratch/"
+
+highlightjs: doc-support/result
+	mkdir -p highlightjs
+	cp -r doc-support/result/highlightjs/highlight.pack.js highlightjs/
+	cp -r doc-support/result/highlightjs/LICENSE highlightjs/
+	cp -r doc-support/result/highlightjs/mono-blue.css highlightjs/
+	cp -r doc-support/result/highlightjs/loader.js highlightjs/
+
+
+manual-full.xml: ${MD_TARGETS} .version functions/library/locations.xml functions/library/generated *.xml **/*.xml **/**/*.xml
+	xmllint --nonet --xinclude --noxincludenode manual.xml --output manual-full.xml
+
+.version: doc-support/result
+	ln -rfs ./doc-support/result/version .version
+
+doc-support/result: doc-support/default.nix
+	(cd doc-support; nix-build)
+
+functions/library/locations.xml: doc-support/result
+	ln -rfs ./doc-support/result/function-locations.xml functions/library/locations.xml
+
+functions/library/generated: doc-support/result
+	ln -rfs ./doc-support/result/function-docs functions/library/generated
+
+%.section.xml: %.section.md
+	pandoc $^ -w docbook+smart \
+		-f markdown+smart \
+	  | sed -e 's|<ulink url=|<link xlink:href=|' \
+	      -e 's|</ulink>|</link>|' \
+	      -e 's|<sect. id=|<section xml:id=|' \
+	      -e 's|</sect[0-9]>|</section>|' \
+	      -e '1s| id=| xml:id=|' \
+	      -e '1s|\(<[^ ]* \)|\1xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" |' \
+	| cat  > $@
+
+%.chapter.xml: %.chapter.md
+	pandoc $^ -w docbook+smart \
+		--top-level-division=chapter \
+		-f markdown+smart \
+	  | sed -e 's|<ulink url=|<link xlink:href=|' \
+	      -e 's|</ulink>|</link>|' \
+	      -e 's|<sect. id=|<section xml:id=|' \
+	      -e 's|</sect[0-9]>|</section>|' \
+	      -e '1s| id=| xml:id=|' \
+	      -e '1s|\(<[^ ]* \)|\1|' \
+	| cat  > $@

doc/README.md

@@ -1,348 +0,0 @@
-# Contributing to the Nixpkgs reference manual
-
-This directory houses the sources files for the Nixpkgs reference manual.
-
-Going forward, it should only contain [reference](https://nix.dev/contributing/documentation/diataxis#reference) documentation.
-For tutorials, guides and explanations, contribute to <https://nix.dev/> instead.
-
-For documentation only relevant for contributors, use Markdown files and code comments in the source code.
-
-Rendered documentation:
-- [Unstable (from master)](https://nixos.org/manual/nixpkgs/unstable/)
-- [Stable (from latest release)](https://nixos.org/manual/nixpkgs/stable/)
-
-The rendering tool is [nixos-render-docs](../pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs), sometimes abbreviated `nrd`.
-
-## Contributing to this documentation
-
-You can quickly check your edits with `nix-build`:
-
-```ShellSession
-$ cd /path/to/nixpkgs
-$ nix-build doc
-```
-
-If the build succeeds, the manual will be in `./result/share/doc/nixpkgs/manual.html`.
-
-### devmode
-
-The shell in the manual source directory makes available a command, `devmode`.
-It is a daemon, that:
-1. watches the manual's source for changes and when they occur — rebuilds
-2. HTTP serves the manual, injecting a script that triggers reload on changes
-3. opens the manual in the default browser
-
-## Syntax
-
-As per [RFC 0072](https://github.com/NixOS/rfcs/pull/72), all new documentation content should be written in [CommonMark](https://commonmark.org/) Markdown dialect.
-
-Additional syntax extensions are available, all of which can be used in NixOS option documentation. The following extensions are currently used:
-
-#### Tables
-
-Tables, using the [GitHub-flavored Markdown syntax](https://github.github.com/gfm/#tables-extension-).
-
-#### Anchors
-
-Explicitly defined **anchors** on headings, to allow linking to sections. These should be always used, to ensure the anchors can be linked even when the heading text changes, and to prevent conflicts between [automatically assigned identifiers](https://github.com/jgm/commonmark-hs/blob/master/commonmark-extensions/test/auto_identifiers.md).
-
-It uses the widely compatible [header attributes](https://github.com/jgm/commonmark-hs/blob/master/commonmark-extensions/test/attributes.md) syntax:
-
-```markdown
-## Syntax {#sec-contributing-markup}
-```
-
-> [!Note]
-> NixOS option documentation does not support headings in general.
-
-#### Inline Anchors
-
-Allow linking arbitrary place in the text (e.g. individual list items, sentences…).
-
-They are defined using a hybrid of the link syntax with the attributes syntax known from headings, called [bracketed spans](https://github.com/jgm/commonmark-hs/blob/master/commonmark-extensions/test/bracketed_spans.md):
-
-```markdown
-- []{#ssec-gnome-hooks-glib} `glib` setup hook will populate `GSETTINGS_SCHEMAS_PATH` and then `wrapGApps*` hook will prepend it to `XDG_DATA_DIRS`.
-```
-
-#### Automatic links
-
-If you **omit a link text** for a link pointing to a section, the text will be substituted automatically. For example `[](#chap-contributing)`.
-
-This syntax is taken from [MyST](https://myst-parser.readthedocs.io/en/latest/using/syntax.html#targets-and-cross-referencing).
-
-
-#### HTML
-
-Inlining HTML is not allowed. Parts of the documentation gets rendered to various non-HTML formats, such as man pages in the case of NixOS manual.
-
-#### Roles
-
-If you want to link to a man page, you can use `` {manpage}`nix.conf(5)` ``. The references will turn into links when a mapping exists in [`doc/manpage-urls.json`](./manpage-urls.json).
-
-A few markups for other kinds of literals are also available:
-
-- `` {command}`rm -rfi` ``
-- `` {env}`XDG_DATA_DIRS` ``
-- `` {file}`/etc/passwd` ``
-- `` {option}`networking.useDHCP` ``
-- `` {var}`/etc/passwd` ``
-
-These literal kinds are used mostly in NixOS option documentation.
-
-This syntax is taken from [MyST](https://myst-parser.readthedocs.io/en/latest/syntax/syntax.html#roles-an-in-line-extension-point). Though, the feature originates from [reStructuredText](https://www.sphinx-doc.org/en/master/usage/restructuredtext/roles.html#role-manpage) with slightly different syntax.
-
-#### Admonitions
-
-Set off from the text to bring attention to something.
-
-It uses pandoc’s [fenced `div`s syntax](https://github.com/jgm/commonmark-hs/blob/master/commonmark-extensions/test/fenced_divs.md):
-
-```markdown
-::: {.warning}
-This is a warning
-:::
-```
-
-The following are supported:
-
-- `caution`
-- `important`
-- `note`
-- `tip`
-- `warning`
-- `example`
-
-Example admonitions require a title to work.
-If you don't provide one, the manual won't be built.
-
-```markdown
-::: {.example #ex-showing-an-example}
-
-# Title for this example
-
-Text for the example.
-:::
-```
-
-#### [Definition lists](https://github.com/jgm/commonmark-hs/blob/master/commonmark-extensions/test/definition_lists.md)
-
-For defining a group of terms:
-
-```markdown
-pear
-:   green or yellow bulbous fruit
-
-watermelon
-:   green fruit with red flesh
-```
-
-## Commit conventions
-
-- Make sure you read about the [commit conventions](../CONTRIBUTING.md#commit-conventions) common to Nixpkgs as a whole.
-
-- If creating a commit purely for documentation changes, format the commit message in the following way:
-
-  ```
-  doc: (documentation summary)
-
-  (Motivation for change, relevant links, additional information.)
-  ```
-
-  Examples:
-
-  * doc: update the kernel config documentation to use `nix-shell`
-  * doc: add information about `nix-update-script`
-
-    Closes #216321.
-
-- If the commit contains more than just documentation changes, follow the commit message format relevant for the rest of the changes.
-
-## Documentation conventions
-
-In an effort to keep the Nixpkgs manual in a consistent style, please follow the conventions below, unless they prevent you from properly documenting something.
-In that case, please open an issue about the particular documentation convention and tag it with a "needs: documentation" label.
-When needed, each convention explain why it exists, so you can make a decision whether to follow it or not based on your particular case.
-Note that these conventions are about the **structure** of the manual (and its source files), not about the content that goes in it.
-You, as the writer of documentation, are still in charge of its content.
-
-- Put each sentence in its own line.
-  This makes reviews and suggestions much easier, since GitHub's review system is based on lines.
-  It also helps identifying long sentences at a glance.
-
-- Use the [admonition syntax](#admonitions) for callouts and examples.
-
-- Provide at least one example per function, and make examples self-contained.
-  This is easier to understand for beginners.
-  It also helps with testing that it actually works – especially once we introduce automation.
-
-  Example code should be such that it can be passed to `pkgs.callPackage`.
-  Instead of something like:
-
-  ```nix
-  pkgs.dockerTools.buildLayeredImage {
-    name = "hello";
-    contents = [ pkgs.hello ];
-  }
-  ```
-
-  Write something like:
-
-  ```nix
-  { dockerTools, hello }:
-  dockerTools.buildLayeredImage {
-    name = "hello";
-    contents = [ hello ];
-  }
-  ```
-
-- When showing inputs/outputs of any [REPL](https://en.wikipedia.org/wiki/Read%E2%80%93eval%E2%80%93print_loop), such as a shell or the Nix REPL, use a format as you'd see in the REPL, while trying to visually separate inputs from outputs.
-  This means that for a shell, you should use a format like the following:
-  ```shell
-  $ nix-build -A hello '<nixpkgs>' \
-    --option require-sigs false \
-    --option trusted-substituters file:///tmp/hello-cache \
-    --option substituters file:///tmp/hello-cache
-  /nix/store/zhl06z4lrfrkw5rp0hnjjfrgsclzvxpm-hello-2.12.1
-  ```
-  Note how the input is preceded by `$` on the first line and indented on subsequent lines, and how the output is provided as you'd see on the shell.
-
-  For the Nix REPL, you should use a format like the following:
-  ```shell
-  nix-repl> builtins.attrNames { a = 1; b = 2; }
-  [ "a" "b" ]
-  ```
-  Note how the input is preceded by `nix-repl>` and the output is provided as you'd see on the Nix REPL.
-
-- When documenting functions or anything that has inputs/outputs and example usage, use nested headings to clearly separate inputs, outputs, and examples.
-  Keep examples as the last nested heading, and link to the examples wherever applicable in the documentation.
-
-  The purpose of this convention is to provide a familiar structure for navigating the manual, so any reader can expect to find content related to inputs in an "inputs" heading, examples in an "examples" heading, and so on.
-  An example:
-  ```
-  ## buildImage
-
-  Some explanation about the function here.
-  Describe a particular scenario, and point to [](#ex-dockerTools-buildImage), which is an example demonstrating it.
-
-  ### Inputs
-
-  Documentation for the inputs of `buildImage`.
-  Perhaps even point to [](#ex-dockerTools-buildImage) again when talking about something specifically linked to it.
-
-  ### Passthru outputs
-
-  Documentation for any passthru outputs of `buildImage`.
-
-  ### Examples
-
-  Note that this is the last nested heading in the `buildImage` section.
-
-  :::{.example #ex-dockerTools-buildImage}
-
-  # Using `buildImage`
-
-  Example of how to use `buildImage` goes here.
-
-  :::
-  ```
-
-- Use [definition lists](#definition-lists) to document function arguments, and the attributes of such arguments as well as their [types](https://nixos.org/manual/nix/stable/language/values).
-  For example:
-
-  ```markdown
-  # pkgs.coolFunction
-
-  Description of what `coolFunction` does.
-
-  ## Inputs
-
-  `coolFunction` expects a single argument which should be an attribute set, with the following possible attributes:
-
-  `name` (String)
-
-  : The name of the resulting image.
-
-  `tag` (String; _optional_)
-
-  : Tag of the generated image.
-
-    _Default:_ the output path's hash.
-  ```
-
-#### Examples
-
-To define a referenceable figure use the following fencing:
-
-```markdown
-:::{.example #an-attribute-set-example}
-# An attribute set example
-
-You can add text before
-
-    ```nix
-    { a = 1; b = 2;}
-    ```
-
-and after code fencing
-:::
-```
-
-Defining examples through the `example` fencing class adds them to a "List of Examples" section after the Table of Contents.
-Though this is not shown in the rendered documentation on nixos.org.
-
-#### Figures
-
-To define a referenceable figure use the following fencing:
-
-```markdown
-::: {.figure #nixos-logo}
-# NixOS Logo
-![NixOS logo](./nixos_logo.png)
-:::
-```
-
-Defining figures through the `figure` fencing class adds them to a `List  of Figures` after the `Table of Contents`.
-Though this is not shown in the rendered documentation on nixos.org.
-
-#### Footnotes
-
-To add a foonote explanation, use the following syntax:
-
-```markdown
-Sometimes it's better to add context [^context] in a footnote.
-
-[^context]: This explanation will be rendered at the end of the chapter.
-```
-
-#### Inline comments
-
-Inline comments are supported with following syntax:
-
-```markdown
-<!-- This is an inline comment -->
-```
-
-The comments will not be rendered in the rendered HTML.
-
-#### Link reference definitions
-
-Links can reference a label, for example, to make the link target reusable:
-
-```markdown
-::: {.note}
-Reference links can also be used to [shorten URLs][url-id] and keep the markdown readable.
-:::
-
-[url-id]: https://github.com/NixOS/nixpkgs/blob/19d4f7dc485f74109bd66ef74231285ff797a823/doc/README.md
-```
-
-This syntax is taken from [CommonMark](https://spec.commonmark.org/0.30/#link-reference-definitions).
-
-#### Typographic replacements
-
-Typographic replacements are enabled. Check the [list of possible replacement patterns check](https://github.com/executablebooks/markdown-it-py/blob/3613e8016ecafe21709471ee0032a90a4157c2d1/markdown_it/rules_core/replacements.py#L1-L15).
-
-## Getting help
-
-If you need documentation-specific help or reviews, ping [@NixOS/documentation-team](https://github.com/orgs/nixos/teams/documentation-team) on your pull request.

doc/anchor-use.js

@@ -1,3 +0,0 @@
-document.addEventListener('DOMContentLoaded', function(event) {
-  anchors.add('h1[id]:not(div.note h1, div.warning h1, div.tip h1, div.caution h1, div.important h1), h2[id]:not(div.note h2, div.warning h2, div.tip h2, div.caution h2, div.important h2), h3[id]:not(div.note h3, div.warning h3, div.tip h3, div.caution h3, div.important h3), h4[id]:not(div.note h4, div.warning h4, div.tip h4, div.caution h4, div.important h4), h5[id]:not(div.note h5, div.warning h5, div.tip h5, div.caution h5, div.important h5), h6[id]:not(div.note h6, div.warning h6, div.tip h6, div.caution h6, div.important h6)');
-});

doc/build-helpers.md

@@ -1,29 +0,0 @@
-# Build helpers {#part-builders}
-
-A build helper is a function that produces derivations.
-
-:::{.warning}
-This is not to be confused with the [`builder` argument of the Nix `derivation` primitive](https://nixos.org/manual/nix/unstable/language/derivations.html), which refers to the executable that produces the build result, or [remote builder](https://nixos.org/manual/nix/stable/advanced-topics/distributed-builds.html), which refers to a remote  machine that could run such an executable.
-:::
-
-Such a function is usually designed to abstract over a typical workflow for a given programming language or framework.
-This allows declaring a build recipe by setting a limited number of options relevant to the particular use case instead of using the `derivation` function directly.
-
-[`stdenv.mkDerivation`](#part-stdenv) is the most widely used build helper, and serves as a basis for many others.
-In addition, it offers various options to customize parts of the builds.
-
-There is no uniform interface for build helpers.
-[Trivial build helpers](#chap-trivial-builders) and [fetchers](#chap-pkgs-fetchers) have various input types for convenience.
-[Language- or framework-specific build helpers](#chap-language-support) usually follow the style of `stdenv.mkDerivation`, which accepts an attribute set or a fixed-point function taking an attribute set.
-
-```{=include=} chapters
-build-helpers/fetchers.chapter.md
-build-helpers/trivial-build-helpers.chapter.md
-build-helpers/testers.chapter.md
-build-helpers/dev-shell-tools.chapter.md
-build-helpers/special.md
-build-helpers/images.md
-hooks/index.md
-languages-frameworks/index.md
-packages/index.md
-```

doc/build-helpers/dev-shell-tools.chapter.md

@@ -1,75 +0,0 @@
-# Development Shell helpers {#chap-devShellTools}
-
-The `nix-shell` command has popularized the concept of transient shell environments for development or testing purposes.
-<!--
-  We should try to document the product, not its development process in the Nixpkgs reference manual,
-  but *something* needs to be said to provide context for this library.
-  This is the most future proof sentence I could come up with while Nix itself does yet make use of this.
-  Relevant is the current status of the devShell attribute "project": https://github.com/NixOS/nix/issues/7501
-  -->
-However, `nix-shell` is not the only way to create such environments, and even `nix-shell` itself can indirectly benefit from this library.
-
-This library provides a set of functions that help create such environments.
-
-## `devShellTools.valueToString` {#sec-devShellTools-valueToString}
-
-Converts Nix values to strings in the way the [`derivation` built-in function](https://nix.dev/manual/nix/2.23/language/derivations) does.
-
-:::{.example}
-## `valueToString` usage examples
-
-```nix
-devShellTools.valueToString (builtins.toFile "foo" "bar")
-=> "/nix/store/...-foo"
-```
-
-```nix
-devShellTools.valueToString false
-=> ""
-```
-
-:::
-
-## `devShellTools.unstructuredDerivationInputEnv` {#sec-devShellTools-unstructuredDerivationInputEnv}
-
-Convert a set of derivation attributes (as would be passed to [`derivation`]) to a set of environment variables that can be used in a shell script.
-This function does not support `__structuredAttrs`, but does support `passAsFile`.
-
-:::{.example}
-## `unstructuredDerivationInputEnv` usage example
-
-```nix
-devShellTools.unstructuredDerivationInputEnv {
-  drvAttrs = {
-    name = "foo";
-    buildInputs = [ hello figlet ];
-    builder = bash;
-    args = [ "-c" "${./builder.sh}" ];
-  };
-}
-=> {
-  name = "foo";
-  buildInputs = "/nix/store/...-hello /nix/store/...-figlet";
-  builder = "/nix/store/...-bash";
-}
-```
-
-Note that `args` is not included, because Nix does not added it to the builder process environment.
-
-:::
-
-## `devShellTools.derivationOutputEnv` {#sec-devShellTools-derivationOutputEnv}
-
-Takes the relevant parts of a derivation and returns a set of environment variables, that would be present in the derivation.
-
-:::{.example}
-## `derivationOutputEnv` usage example
-
-```nix
-let
-  pkg = hello;
-in
-devShellTools.derivationOutputEnv { outputList = pkg.outputs; outputMap = pkg; }
-```
-
-:::

doc/build-helpers/fetchers.chapter.md

@@ -1,884 +0,0 @@
-# Fetchers {#chap-pkgs-fetchers}
-
-Building software with Nix often requires downloading source code and other files from the internet.
-To this end, we use functions that we call _fetchers_, which obtain remote sources via various protocols and services.
-
-Nix provides built-in fetchers such as [`builtins.fetchTarball`](https://nixos.org/manual/nix/stable/language/builtins.html#builtins-fetchTarball).
-Nixpkgs provides its own fetchers, which work differently:
-
-- A built-in fetcher will download and cache files at evaluation time and produce a [store path](https://nixos.org/manual/nix/stable/glossary#gloss-store-path).
-  A Nixpkgs fetcher will create a ([fixed-output](https://nixos.org/manual/nix/stable/glossary#gloss-fixed-output-derivation)) [derivation](https://nixos.org/manual/nix/stable/glossary#gloss-derivation), and files are downloaded at build time.
-- Built-in fetchers will invalidate their cache after [`tarball-ttl`](https://nixos.org/manual/nix/stable/command-ref/conf-file#conf-tarball-ttl) expires, and will require network activity to check if the cache entry is up to date.
-  Nixpkgs fetchers only re-download if the specified hash changes or the store object is not available.
-- Built-in fetchers do not use [substituters](https://nixos.org/manual/nix/stable/command-ref/conf-file#conf-substituters).
-  Derivations produced by Nixpkgs fetchers will use any configured binary cache transparently.
-
-This significantly reduces the time needed to evaluate Nixpkgs, and allows [Hydra](https://nixos.org/hydra) to retain and re-distribute sources used by Nixpkgs in the [public binary cache](https://cache.nixos.org).
-For these reasons, Nix's built-in fetchers are not allowed in Nixpkgs.
-
-The following table summarises the differences:
-
-| Fetchers | Download | Output | Cache | Re-download when |
-|-|-|-|-|-|
-| `builtins.fetch*` | evaluation time | store path | `/nix/store`, `~/.cache/nix` | `tarball-ttl` expires, cache miss in `~/.cache/nix`, output store object not in local store |
-| `pkgs.fetch*` | build time | derivation | `/nix/store`, substituters | output store object not available |
-
-:::{.tip}
-`pkgs.fetchFrom*` helpers retrieve _snapshots_ of version-controlled sources, as opposed to the entire version history, which is more efficient.
-`pkgs.fetchgit` by default also has the same behaviour, but can be changed through specific attributes given to it.
-:::
-
-## Caveats {#chap-pkgs-fetchers-caveats}
-
-Because Nixpkgs fetchers are fixed-output derivations, an [output hash](https://nixos.org/manual/nix/stable/language/advanced-attributes#adv-attr-outputHash) has to be specified, usually indirectly through a `hash` attribute.
-This hash refers to the derivation output, which can be different from the remote source itself!
-
-This has the following implications that you should be aware of:
-
-- Use Nix (or Nix-aware) tooling to produce the output hash.
-
-- When changing any fetcher parameters, always update the output hash.
-  Use one of the methods from [](#sec-pkgs-fetchers-updating-source-hashes).
-  Otherwise, existing store objects that match the output hash will be re-used rather than fetching new content.
-
-  :::{.note}
-  A similar problem arises while testing changes to a fetcher's implementation.
-  If the output of the derivation already exists in the Nix store, test failures can go undetected.
-  The [`invalidateFetcherByDrvHash`](#tester-invalidateFetcherByDrvHash) function helps prevent reusing cached derivations.
-  :::
-
-## Updating source hashes {#sec-pkgs-fetchers-updating-source-hashes}
-
-There are several ways to obtain the hash corresponding to a remote source.
-Unless you understand how the fetcher you're using calculates the hash from the downloaded contents, you should use [the fake hash method](#sec-pkgs-fetchers-updating-source-hashes-fakehash-method).
-
-1. []{#sec-pkgs-fetchers-updating-source-hashes-fakehash-method} The fake hash method: In your package recipe, set the hash to one of
-
-   - `""`
-   - `lib.fakeHash`
-   - `lib.fakeSha256`
-   - `lib.fakeSha512`
-
-   Attempt to build, extract the calculated hashes from error messages, and put them into the recipe.
-
-   :::{.warning}
-   You must use one of these four fake hashes and not some arbitrarily-chosen hash.
-   See [](#sec-pkgs-fetchers-secure-hashes) for details.
-   :::
-
-   :::{.example #ex-fetchers-update-fod-hash}
-   # Update source hash with the fake hash method
-
-   Consider the following recipe that produces a plain file:
-
-   ```nix
-   { fetchurl }:
-   fetchurl {
-     url = "https://raw.githubusercontent.com/NixOS/nixpkgs/23.05/.version";
-     hash = "sha256-ZHl1emidXVojm83LCVrwULpwIzKE/mYwfztVkvpruOM=";
-   }
-   ```
-
-   A common mistake is to update a fetcher parameter, such as `url`, without updating the hash:
-
-   ```nix
-   { fetchurl }:
-   fetchurl {
-     url = "https://raw.githubusercontent.com/NixOS/nixpkgs/23.11/.version";
-     hash = "sha256-ZHl1emidXVojm83LCVrwULpwIzKE/mYwfztVkvpruOM=";
-   }
-   ```
-
-   **This will produce the same output as before!**
-   Set the hash to an empty string:
-
-   ```nix
-   { fetchurl }:
-   fetchurl {
-     url = "https://raw.githubusercontent.com/NixOS/nixpkgs/23.11/.version";
-     hash = "";
-   }
-   ```
-
-   When building the package, use the error message to determine the correct hash:
-
-   ```shell
-   $ nix-build
-   (some output removed for clarity)
-   error: hash mismatch in fixed-output derivation '/nix/store/7yynn53jpc93l76z9zdjj4xdxgynawcw-version.drv':
-           specified: sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
-               got:    sha256-BZqI7r0MNP29yGH5+yW2tjU9OOpOCEvwWKrWCv5CQ0I=
-   error: build of '/nix/store/bqdjcw5ij5ymfbm41dq230chk9hdhqff-version.drv' failed
-   ```
-   :::
-
-2. Prefetch the source with [`nix-prefetch-<type> <URL>`](https://search.nixos.org/packages?buckets={%22package_attr_set%22%3A[%22No%20package%20set%22]%2C%22package_license_set%22%3A[]%2C%22package_maintainers_set%22%3A[]%2C%22package_platforms%22%3A[]}&query=nix-prefetch), where `<type>` is one of
-
-   - `url`
-   - `git`
-   - `hg`
-   - `cvs`
-   - `bzr`
-   - `svn`
-
-   The hash is printed to stdout.
-
-3. Prefetch by package source (with `nix-prefetch-url '<nixpkgs>' -A <package>.src`, where `<package>` is package attribute name).
-   The hash is printed to stdout.
-
-   This works well when you've upgraded the existing package version and want to find out new hash, but is useless if the package can't be accessed by attribute or the package has multiple sources (`.srcs`, architecture-dependent sources, etc).
-
-4. Upstream hash: use it when upstream provides `sha256` or `sha512`.
-   Don't use it when upstream provides `md5`, compute `sha256` instead.
-
-   A little nuance is that `nix-prefetch-*` tools produce hashes with the `nix32` encoding (a Nix-specific base32 adaptation), but upstream usually provides hexadecimal (`base16`) encoding.
-   Fetchers understand both formats.
-   Nixpkgs does not standardise on any one format.
-
-   You can convert between hash formats with [`nix-hash`](https://nixos.org/manual/nix/stable/command-ref/nix-hash).
-
-5. Extract the hash from a local source archive with `sha256sum`.
-   Use `nix-prefetch-url file:///path/to/archive` if you want the custom Nix `base32` hash.
-
-## Obtaining hashes securely {#sec-pkgs-fetchers-secure-hashes}
-
-It's always a good idea to avoid Man-in-the-Middle (MITM) attacks when downloading source contents.
-Otherwise, you could unknowingly download malware instead of the intended source, and instead of the actual source hash, you'll end up using the hash of malware.
-Here are security considerations for this scenario:
-
-- `http://` URLs are not secure to prefetch hashes.
-
-- Upstream hashes should be obtained via a secure protocol.
-
-- `https://` URLs give you more protections when using `nix-prefetch-*` or for upstream hashes.
-
-- `https://` URLs are secure when using the [fake hash method](#sec-pkgs-fetchers-updating-source-hashes-fakehash-method) *only if* you use one of the listed fake hashes.
-  If you use any other hash, the download will be exposed to MITM attacks even if you use HTTPS URLs.
-
-  In more concrete terms, if you use any other hash, the [`--insecure` flag](https://curl.se/docs/manpage.html#-k) will be passed to the underlying call to `curl` when downloading content.
-
-[]{#fetchurl}
-## `fetchurl` {#sec-pkgs-fetchers-fetchurl}
-
-`fetchurl` returns a [fixed-output derivation](https://nixos.org/manual/nix/stable/glossary.html#gloss-fixed-output-derivation) which downloads content from a given URL and stores the unaltered contents within the Nix store.
-
-It uses {manpage}`curl(1)` internally, and allows its behaviour to be modified by specifying a few attributes in the argument to `fetchurl` (see the documentation for attributes `curlOpts`, `curlOptsList`, and `netrcPhase`).
-
-The resulting [store path](https://nixos.org/manual/nix/stable/store/store-path) is determined by the hash given to `fetchurl`, and also the `name` (or `pname` and `version`) values.
-
-If neither `name` nor `pname` and `version` are specified when calling `fetchurl`, it will default to using the [basename](https://nixos.org/manual/nix/stable/language/builtins.html#builtins-baseNameOf) of `url` or the first element of `urls`.
-If `pname` and `version` are specified, `fetchurl` will use those values and will ignore `name`, even if it is also specified.
-
-### Inputs {#sec-pkgs-fetchers-fetchurl-inputs}
-
-`fetchurl` requires an attribute set with the following attributes:
-
-`url` (String; _optional_)
-: The URL to download from.
-
-  :::{.note}
-  Either `url` or `urls` must be specified, but not both.
-  :::
-
-  All URLs of the format [specified here](https://curl.se/docs/url-syntax.html#rfc-3986-plus) are supported.
-
-  _Default value:_ `""`.
-
-`urls` (List of String; _optional_)
-: A list of URLs, specifying download locations for the same content.
-  Each URL will be tried in order until one of them succeeds with some content or all of them fail.
-  See [](#ex-fetchers-fetchurl-nixpkgs-version-multiple-urls) to understand how this attribute affects the behaviour of `fetchurl`.
-
-  :::{.note}
-  Either `url` or `urls` must be specified, but not both.
-  :::
-
-  _Default value:_ `[]`.
-
-`hash` (String; _optional_)
-: Hash of the derivation output of `fetchurl`, following the format for integrity metadata as defined by [SRI](https://www.w3.org/TR/SRI/).
-  For more information, see [](#chap-pkgs-fetchers-caveats).
-
-  :::{.note}
-  It is recommended that you use the `hash` attribute instead of the other hash-specific attributes that exist for backwards compatibility.
-
-  If `hash` is not specified, you must specify `outputHash` and `outputHashAlgo`, or one of `sha512`, `sha256`, or `sha1`.
-  :::
-
-  _Default value:_ `""`.
-
-`outputHash` (String; _optional_)
-: Hash of the derivation output of `fetchurl` in the format expected by Nix.
-  See [the documentation on the Nix manual](https://nixos.org/manual/nix/stable/language/advanced-attributes.html#adv-attr-outputHash) for more information about its format.
-
-  :::{.note}
-  It is recommended that you use the `hash` attribute instead.
-
-  If `outputHash` is specified, you must also specify `outputHashAlgo`.
-  :::
-
-  _Default value:_ `""`.
-
-`outputHashAlgo` (String; _optional_)
-: Algorithm used to generate the value specified in `outputHash`.
-  See [the documentation on the Nix manual](https://nixos.org/manual/nix/stable/language/advanced-attributes.html#adv-attr-outputHashAlgo) for more information about the values it supports.
-
-  :::{.note}
-  It is recommended that you use the `hash` attribute instead.
-
-  The value specified in `outputHashAlgo` will be ignored if `outputHash` isn't also specified.
-  :::
-
-  _Default value:_ `""`.
-
-`sha1` (String; _optional_)
-: SHA-1 hash of the derivation output of `fetchurl` in the format expected by Nix.
-  See [the documentation on the Nix manual](https://nixos.org/manual/nix/stable/language/advanced-attributes.html#adv-attr-outputHash) for more information about its format.
-
-  :::{.note}
-  It is recommended that you use the `hash` attribute instead.
-  :::
-
-  _Default value:_ `""`.
-
-`sha256` (String; _optional_)
-: SHA-256 hash of the derivation output of `fetchurl` in the format expected by Nix.
-  See [the documentation on the Nix manual](https://nixos.org/manual/nix/stable/language/advanced-attributes.html#adv-attr-outputHash) for more information about its format.
-
-  :::{.note}
-  It is recommended that you use the `hash` attribute instead.
-  :::
-
-  _Default value:_ `""`.
-
-`sha512` (String; _optional_)
-: SHA-512 hash of the derivation output of `fetchurl` in the format expected by Nix.
-  See [the documentation on the Nix manual](https://nixos.org/manual/nix/stable/language/advanced-attributes.html#adv-attr-outputHash) for more information about its format.
-
-  :::{.note}
-  It is recommended that you use the `hash` attribute instead.
-  :::
-
-  _Default value:_ `""`.
-
-`name` (String; _optional_)
-: The symbolic name of the downloaded file when saved in the Nix store.
-  See [the `fetchurl` overview](#sec-pkgs-fetchers-fetchurl) for details on how the name of the file is decided.
-
-  _Default value:_ `""`.
-
-`pname` (String; _optional_)
-: A base name, which will be combined with `version` to form the symbolic name of the downloaded file when saved in the Nix store.
-  See [the `fetchurl` overview](#sec-pkgs-fetchers-fetchurl) for details on how the name of the file is decided.
-
-  :::{.note}
-  If `pname` is specified, you must also specify `version`, otherwise `fetchurl` will ignore the value of `pname`.
-  :::
-
-  _Default value:_ `""`.
-
-`version` (String; _optional_)
-: A version, which will be combined with `pname` to form the symbolic name of the downloaded file when saved in the Nix store.
-  See [the `fetchurl` overview](#sec-pkgs-fetchers-fetchurl) for details on how the name of the file is decided.
-
-  _Default value:_ `""`.
-
-`recursiveHash` (Boolean; _optional_) []{#sec-pkgs-fetchers-fetchurl-inputs-recursiveHash}
-: If set to `true`, will signal to Nix that the hash given to `fetchurl` was calculated using the `"recursive"` mode.
-  See [the documentation on the Nix manual](https://nixos.org/manual/nix/stable/language/advanced-attributes.html#adv-attr-outputHashMode) for more information about the existing modes.
-
-  By default, `fetchurl` uses `"recursive"` mode when the `executable` attribute is set to `true`, so you don't need to specify `recursiveHash` in this case.
-
-  _Default value:_ `false`.
-
-`executable` (Boolean; _optional_)
-: If `true`, sets the executable bit on the downloaded file.
-
-  _Default value_: `false`.
-
-`downloadToTemp` (Boolean; _optional_) []{#sec-pkgs-fetchers-fetchurl-inputs-downloadToTemp}
-: If `true`, saves the downloaded file to a temporary location instead of the expected Nix store location.
-  This is useful when used in conjunction with `postFetch` attribute, otherwise `fetchurl` will not produce any meaningful output.
-
-  The location of the downloaded file will be set in the `$downloadedFile` variable, which should be used by the script in the `postFetch` attribute.
-  See [](#ex-fetchers-fetchurl-nixpkgs-version-postfetch) to understand how to work with this attribute.
-
-  _Default value:_ `false`.
-
-`postFetch` (String; _optional_)
-: Script executed after the file has been downloaded successfully, and before `fetchurl` finishes running.
-  Useful for post-processing, to check or transform the file in some way.
-  See [](#ex-fetchers-fetchurl-nixpkgs-version-postfetch) to understand how to work with this attribute.
-
-  _Default value:_ `""`.
-
-`netrcPhase` (String or Null; _optional_)
-: Script executed to create a {manpage}`netrc(5)` file to be used with {manpage}`curl(1)`.
-  The script should create the `netrc` file (note that it does not begin with a ".") in the directory it's currently running in (`$PWD`).
-
-  The script is executed during the setup done by `fetchurl` before it runs any of its code to download the specified content.
-
-  :::{.note}
-  If specified, `fetchurl` will automatically alter its invocation of {manpage}`curl(1)` to use the `netrc` file, so you don't need to add anything to `curlOpts` or `curlOptsList`.
-  :::
-
-  :::{.caution}
-  Since `netrcPhase` needs to be specified in your source Nix code, any secrets that you put directly in it will be world-readable by design (both in your source code, and when the derivation gets created in the Nix store).
-
-  If you want to avoid this behaviour, see the documentation of `netrcImpureEnvVars` for an alternative way of dealing with these secrets.
-  :::
-
-  _Default value_: `null`.
-
-`netrcImpureEnvVars` (List of String; _optional_)
-: If specified, `fetchurl` will add these environment variable names to the list of [impure environment variables](https://nixos.org/manual/nix/stable/language/advanced-attributes.html#adv-attr-impureEnvVars), which will be passed from the environment of the calling user to the builder running the `fetchurl` code.
-
-  This is useful when used with `netrcPhase` to hide any secrets that are used in it, because the script in `netrcPhase` only needs to reference the environment variables with the secrets in them instead.
-  However, note that these are called _impure_ variables for a reason:
-  the environment that starts the build needs to have these variables declared for everything to work properly, which means that additional setup is required outside what Nix controls.
-
-  _Default value:_ `[]`.
-
-`curlOpts` (String; _optional_)
-: If specified, this value will be appended to the invocation of {manpage}`curl(1)` when downloading the URL(s) given to `fetchurl`.
-  Multiple arguments can be separated by spaces normally, but values with whitespaces will be interpreted as multiple arguments (instead of a single value), even if the value is escaped.
-  See `curlOptsList` for a way to pass values with whitespaces in them.
-
-  _Default value:_ `""`.
-
-`curlOptsList` (List of String; _optional_)
-: If specified, each element of this list will be passed as an argument to the invocation of {manpage}`curl(1)` when downloading the URL(s) given to `fetchurl`.
-  This allows passing values that contain spaces, with no escaping needed.
-
-  _Default value:_ `[]`.
-
-`showURLs` (Boolean; _optional_)
-: If set to `true`, this will stop `fetchurl` from downloading anything at all.
-  Instead, it will output a list of all the URLs it would've used to download the content (after resolving `mirror://` URLs, for example).
-  This is useful for debugging.
-
-  _Default value:_ `false`.
-
-`meta` (Attribute Set; _optional_)
-: Specifies any [meta-attributes](#chap-meta) for the derivation returned by `fetchurl`.
-
-  _Default value:_ `{}`.
-
-`passthru` (Attribute Set; _optional_)
-: Specifies any extra [`passthru`](#chap-passthru) attributes for the derivation returned by `fetchurl`.
-  Note that `fetchurl` defines [`passthru` attributes of its own](#ssec-pkgs-fetchers-fetchurl-passthru-outputs).
-  Attributes specified in `passthru` can override the default attributes returned by `fetchurl`.
-
-  _Default value:_ `{}`.
-
-`preferLocalBuild` (Boolean; _optional_)
-: This is the same attribute as [defined in the Nix manual](https://nixos.org/manual/nix/stable/language/advanced-attributes.html#adv-attr-preferLocalBuild).
-  It is `true` by default because making a remote machine download the content just duplicates network traffic (since the local machine might download the results from the derivation anyway), but this could be useful in cases where network access is restricted on local machines.
-
-  _Default value:_ `true`.
-
-`nativeBuildInputs` (List of Attribute Set; _optional_)
-: Additional packages needed to download the content.
-  This is useful if you need extra packages for `postFetch` or `netrcPhase`, for example.
-  Has the same semantics as in [](#var-stdenv-nativeBuildInputs).
-  See [](#ex-fetchers-fetchurl-nixpkgs-version-postfetch) to understand how this can be used with `postFetch`.
-
-  _Default value:_ `[]`.
-
-### Passthru outputs {#ssec-pkgs-fetchers-fetchurl-passthru-outputs}
-
-`fetchurl` also defines its own [`passthru`](#chap-passthru) attributes:
-
-`url` (String)
-
-: The same `url` attribute passed in the argument to `fetchurl`.
-
-### Examples {#ssec-pkgs-fetchers-fetchurl-examples}
-
-:::{.example #ex-fetchers-fetchurl-nixpkgs-version}
-# Using `fetchurl` to download a file
-
-The following package downloads a small file from a URL and shows the most common way to use `fetchurl`:
-
-```nix
-{ fetchurl }:
-fetchurl {
-  url = "https://raw.githubusercontent.com/NixOS/nixpkgs/23.11/.version";
-  hash = "sha256-BZqI7r0MNP29yGH5+yW2tjU9OOpOCEvwWKrWCv5CQ0I=";
-}
-```
-
-After building the package, the file will be downloaded and place into the Nix store:
-
-```shell
-$ nix-build
-(output removed for clarity)
-/nix/store/4g9y3x851wqrvim4zcz5x2v3zivmsq8n-version
-
-$ cat /nix/store/4g9y3x851wqrvim4zcz5x2v3zivmsq8n-version
-23.11
-```
-:::
-
-:::{.example #ex-fetchers-fetchurl-nixpkgs-version-multiple-urls}
-# Using `fetchurl` to download a file with multiple possible URLs
-
-The following package adapts [](#ex-fetchers-fetchurl-nixpkgs-version) to use multiple URLs.
-The first URL was crafted to intentionally return an error to illustrate how `fetchurl` will try multiple URLs until it finds one that works (or all URLs fail).
-
-```nix
-{ fetchurl }:
-fetchurl {
-  urls = [
-    "https://raw.githubusercontent.com/NixOS/nixpkgs/23.11/does-not-exist"
-    "https://raw.githubusercontent.com/NixOS/nixpkgs/23.11/.version"
-  ];
-  hash = "sha256-BZqI7r0MNP29yGH5+yW2tjU9OOpOCEvwWKrWCv5CQ0I=";
-}
-```
-
-After building the package, both URLs will be used to download the file:
-
-```shell
-$ nix-build
-(some output removed for clarity)
-trying https://raw.githubusercontent.com/NixOS/nixpkgs/23.11/does-not-exist
-(some output removed for clarity)
-curl: (22) The requested URL returned error: 404
-
-trying https://raw.githubusercontent.com/NixOS/nixpkgs/23.11/.version
-(some output removed for clarity)
-/nix/store/n9asny31z32q7sdw6a8r1gllrsfy53kl-does-not-exist
-
-$ cat /nix/store/n9asny31z32q7sdw6a8r1gllrsfy53kl-does-not-exist
-23.11
-```
-
-However, note that the name of the file was derived from the first URL (this is further explained in [the `fetchurl` overview](#sec-pkgs-fetchers-fetchurl)).
-To ensure the result will have the same name regardless of which URLs are used, we can modify the package:
-
-```nix
-{ fetchurl }:
-fetchurl {
-  name = "nixpkgs-version";
-  urls = [
-    "https://raw.githubusercontent.com/NixOS/nixpkgs/23.11/does-not-exist"
-    "https://raw.githubusercontent.com/NixOS/nixpkgs/23.11/.version"
-  ];
-  hash = "sha256-BZqI7r0MNP29yGH5+yW2tjU9OOpOCEvwWKrWCv5CQ0I=";
-}
-```
-
-After building the package, the result will have the name we specified:
-
-```shell
-$ nix-build
-(output removed for clarity)
-/nix/store/zczb6wl3al6jm9sm5h3pr6nqn0i5ji9z-nixpkgs-version
-```
-:::
-
-:::{.example #ex-fetchers-fetchurl-nixpkgs-version-postfetch}
-# Manipulating the content downloaded by `fetchurl`
-
-It might be useful to manipulate the content downloaded by `fetchurl` directly in its derivation.
-In this example, we'll adapt [](#ex-fetchers-fetchurl-nixpkgs-version) to append the result of running the `hello` package to the contents we download, purely to illustrate how to manipulate the content.
-
-```nix
-{ fetchurl, hello, lib }:
-fetchurl {
-  url = "https://raw.githubusercontent.com/NixOS/nixpkgs/23.11/.version";
-
-  nativeBuildInputs = [ hello ];
-
-  downloadToTemp = true;
-  postFetch = ''
-    ${lib.getExe hello} >> $downloadedFile
-    mv $downloadedFile $out
-  '';
-
-  hash = "sha256-ceooQQYmDx5+0nfg40uU3NNI2yKrixP7HZ/xLZUNv+w=";
-}
-```
-
-After building the package, the resulting file will have "Hello, world!" appended to it:
-
-```shell
-$ nix-build
-(output removed for clarity)
-/nix/store/ifi6pp7q0ag5h7c5v9h1c1c7bhd10c7f-version
-
-$ cat /nix/store/ifi6pp7q0ag5h7c5v9h1c1c7bhd10c7f-version
-23.11
-Hello, world!
-```
-
-Note that the `hash` specified in the package is different than the hash specified in [](#ex-fetchers-fetchurl-nixpkgs-version), because the contents of the output have changed (even though the actual file that was downloaded is the same).
-See [](#chap-pkgs-fetchers-caveats) for more details on how to work with the `hash` attribute when the output changes.
-:::
-
-## `fetchzip` {#sec-pkgs-fetchers-fetchzip}
-
-Returns a [fixed-output derivation](https://nixos.org/manual/nix/stable/glossary.html#gloss-fixed-output-derivation) which downloads an archive from a given URL and decompresses it.
-
-Despite its name, `fetchzip` is not limited to `.zip` files but can also be used with [various compressed tarball formats](#tar-files) by default.
-This can extended by specifying additional attributes, see [](#ex-fetchers-fetchzip-rar-archive) to understand how to do that.
-
-### Inputs {#sec-pkgs-fetchers-fetchzip-inputs}
-
-`fetchzip` requires an attribute set, and most attributes are passed to the underlying call to [`fetchurl`](#sec-pkgs-fetchers-fetchurl).
-
-The attributes below are treated differently by `fetchzip` when compared to what `fetchurl` expects:
-
-`name` (String; _optional_)
-: Works as defined in `fetchurl`, but has a different default value than `fetchurl`.
-
-  _Default value:_ `"source"`.
-
-`nativeBuildInputs` (List of Attribute Set; _optional_)
-: Works as defined in `fetchurl`, but it is also augmented by `fetchzip` to include packages to deal with additional archives (such as `.zip`).
-
-  _Default value:_ `[]`.
-
-`postFetch` (String; _optional_)
-: Works as defined in `fetchurl`, but it is also augmented with the code needed to make `fetchzip` work.
-
-  :::{.caution}
-  It is only safe to modify files in `$out` in `postFetch`.
-  Consult the implementation of `fetchzip` for anything more involved.
-  :::
-
-  _Default value:_ `""`.
-
-`stripRoot` (Boolean; _optional_)
-: If `true`, the decompressed contents are moved one level up the directory tree.
-
-  This is useful for archives that decompress into a single directory which commonly includes some values that change with time, such as version numbers.
-  When this is the case (and `stripRoot` is `true`), `fetchzip` will remove this directory and make the decompressed contents available in the top-level directory.
-
-  [](#ex-fetchers-fetchzip-simple-striproot) shows what this attribute does.
-
-  This attribute is **not** passed through to `fetchurl`.
-
-  _Default value:_ `true`.
-
-`extension` (String or Null; _optional_)
-: If set, the archive downloaded by `fetchzip` will be renamed to a filename with the extension specified in this attribute.
-
-  This is useful when making `fetchzip` support additional types of archives, because the implementation may use the extension of an archive to determine whether they can decompress it.
-  If the URL you're using to download the contents doesn't end with the extension associated with the archive, use this attribute to fix the filename of the archive.
-
-  This attribute is **not** passed through to `fetchurl`.
-
-  _Default value:_ `null`.
-
-`recursiveHash` (Boolean; _optional_)
-: Works [as defined in `fetchurl`](#sec-pkgs-fetchers-fetchurl-inputs-recursiveHash), but its default value is different than for `fetchurl`.
-
-  _Default value:_ `true`.
-
-`downloadToTemp` (Boolean; _optional_)
-: Works [as defined in `fetchurl`](#sec-pkgs-fetchers-fetchurl-inputs-downloadToTemp), but its default value is different than for `fetchurl`.
-
-  _Default value:_ `true`.
-
-`extraPostFetch` **DEPRECATED**
-: This attribute is deprecated.
-  Please use `postFetch` instead.
-
-  This attribute is **not** passed through to `fetchurl`.
-
-### Examples {#sec-pkgs-fetchers-fetchzip-examples}
-
-::::{.example #ex-fetchers-fetchzip-simple-striproot}
-# Using `fetchzip` to output contents directly
-
-The following recipe shows how to use `fetchzip` to decompress a `.tar.gz` archive:
-
-```nix
-{ fetchzip }:
-fetchzip {
-  url = "https://github.com/NixOS/patchelf/releases/download/0.18.0/patchelf-0.18.0.tar.gz";
-  hash = "sha256-3ABYlME9R8klcpJ7MQpyFEFwHmxDDEzIYBqu/CpDYmg=";
-}
-```
-
-This archive has all its contents in a directory named `patchelf-0.18.0`.
-This means that after decompressing, you'd have to enter this directory to see the contents of the archive.
-However, `fetchzip` makes this easier through the attribute `stripRoot` (enabled by default).
-
-After building the recipe, the derivation output will show all the files in the archive at the top level:
-
-```shell
-$ nix-build
-(output removed for clarity)
-/nix/store/1b7h3fvmgrcddvs0m299hnqxlgli1yjw-source
-
-$ ls /nix/store/1b7h3fvmgrcddvs0m299hnqxlgli1yjw-source
-aclocal.m4  completions  configure.ac  m4           Makefile.in  patchelf.spec     README.md  tests
-build-aux   configure    COPYING       Makefile.am  patchelf.1   patchelf.spec.in  src        version
-```
-
-If `stripRoot` is set to `false`, the derivation output will be the decompressed archive as-is:
-
-```nix
-{ fetchzip }:
-fetchzip {
-  url = "https://github.com/NixOS/patchelf/releases/download/0.18.0/patchelf-0.18.0.tar.gz";
-  hash = "sha256-uv3FuKE4DqpHT3yfE0qcnq0gYjDNQNKZEZt2+PUAneg=";
-  stripRoot = false;
-}
-```
-
-:::{.caution}
-The hash changed!
-Whenever changing attributes of a Nixpkgs fetcher, [remember to invalidate the hash](#chap-pkgs-fetchers-caveats), otherwise you won't get the results you're expecting!
-:::
-
-After building the recipe:
-
-```shell
-$ nix-build
-(output removed for clarity)
-/nix/store/2hy5bxw7xgbgxkn0i4x6hjr8w3dbx16c-source
-
-$ ls /nix/store/2hy5bxw7xgbgxkn0i4x6hjr8w3dbx16c-source
-patchelf-0.18.0
-```
-::::
-
-::::{.example #ex-fetchers-fetchzip-rar-archive}
-# Using `fetchzip` to decompress a `.rar` file
-
-The `unrar` package provides a [setup hook](#ssec-setup-hooks) to decompress `.rar` archives during the [unpack phase](#ssec-unpack-phase), which can be used with `fetchzip` to decompress those archives:
-
-```nix
-{ fetchzip, unrar }:
-fetchzip {
-  url = "https://archive.org/download/SpaceCadet_Plus95/Space_Cadet.rar";
-  hash = "sha256-fC+zsR8BY6vXpUkVd6i1jF0IZZxVKVvNi6VWCKT+pA4=";
-  stripRoot = false;
-  nativeBuildInputs = [ unrar ];
-}
-```
-
-Since this particular `.rar` file doesn't put its contents in a directory inside the archive, `stripRoot` must be set to `false`.
-
-After building the recipe, the derivation output will show the decompressed files:
-
-```shell
-$ nix-build
-(output removed for clarity)
-/nix/store/zpn7knxfva6rfjja2gbb4p3l9w1f0d36-source
-
-$ ls /nix/store/zpn7knxfva6rfjja2gbb4p3l9w1f0d36-source
-FONT.DAT      PINBALL.DAT  PINBALL.EXE	PINBALL2.MID  TABLE.BMP    WMCONFIG.EXE
-MSCREATE.DIR  PINBALL.DOC  PINBALL.MID	Sounds	     WAVEMIX.INF
-```
-::::
-
-## `fetchpatch` {#fetchpatch}
-
-`fetchpatch` works very similarly to `fetchurl` with the same arguments expected. It expects patch files as a source and performs normalization on them before computing the checksum. For example, it will remove comments or other unstable parts that are sometimes added by version control systems and can change over time.
-
-- `relative`: Similar to using `git-diff`'s `--relative` flag, only keep changes inside the specified directory, making paths relative to it.
-- `stripLen`: Remove the first `stripLen` components of pathnames in the patch.
-- `decode`: Pipe the downloaded data through this command before processing it as a patch.
-- `extraPrefix`: Prefix pathnames by this string.
-- `excludes`: Exclude files matching these patterns (applies after the above arguments).
-- `includes`: Include only files matching these patterns (applies after the above arguments).
-- `revert`: Revert the patch.
-
-Note that because the checksum is computed after applying these effects, using or modifying these arguments will have no effect unless the `hash` argument is changed as well.
-
-
-Most other fetchers return a directory rather than a single file.
-
-
-## `fetchDebianPatch` {#fetchdebianpatch}
-
-A wrapper around `fetchpatch`, which takes:
-- `patch` and `hash`: the patch's filename,
-  and its hash after normalization by `fetchpatch` ;
-- `pname`: the Debian source package's name ;
-- `version`: the upstream version number ;
-- `debianRevision`: the [Debian revision number] if applicable ;
-- the `area` of the Debian archive: `main` (default), `contrib`, or `non-free`.
-
-Here is an example of `fetchDebianPatch` in action:
-
-```nix
-{ lib
-, fetchDebianPatch
-, buildPythonPackage
-}:
-
-buildPythonPackage rec {
-  pname = "pysimplesoap";
-  version = "1.16.2";
-  src = <...>;
-
-  patches = [
-    (fetchDebianPatch {
-      inherit pname version;
-      debianRevision = "5";
-      name = "Add-quotes-to-SOAPAction-header-in-SoapClient.patch";
-      hash = "sha256-xA8Wnrpr31H8wy3zHSNfezFNjUJt1HbSXn3qUMzeKc0=";
-    })
-  ];
-
-  # ...
-}
-```
-
-Patches are fetched from `sources.debian.org`, and so must come from a
-package version that was uploaded to the Debian archive.  Packages may
-be removed from there once that specific version isn't in any suite
-anymore (stable, testing, unstable, etc.), so maintainers should use
-`copy-tarballs.pl` to archive the patch if it needs to be available
-longer-term.
-
-[Debian revision number]: https://www.debian.org/doc/debian-policy/ch-controlfields.html#version
-
-
-## `fetchsvn` {#fetchsvn}
-
-Used with Subversion. Expects `url` to a Subversion directory, `rev`, and `hash`.
-
-## `fetchgit` {#fetchgit}
-
-Used with Git. Expects `url` to a Git repo, `rev`, and `hash`. `rev` in this case can be full the git commit id (SHA1 hash) or a tag name like `refs/tags/v1.0`.
-
-Additionally, the following optional arguments can be given: `fetchSubmodules = true` makes `fetchgit` also fetch the submodules of a repository. If `deepClone` is set to true, the entire repository is cloned as opposing to just creating a shallow clone. `deepClone = true` also implies `leaveDotGit = true` which means that the `.git` directory of the clone won't be removed after checkout.
-
-If only parts of the repository are needed, `sparseCheckout` can be used. This will prevent git from fetching unnecessary blobs from server, see [git sparse-checkout](https://git-scm.com/docs/git-sparse-checkout) for more information:
-
-```nix
-{ stdenv, fetchgit }:
-
-stdenv.mkDerivation {
-  name = "hello";
-  src = fetchgit {
-    url = "https://...";
-    sparseCheckout = [
-      "directory/to/be/included"
-      "another/directory"
-    ];
-    hash = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
-  };
-}
-```
-
-## `fetchfossil` {#fetchfossil}
-
-Used with Fossil. Expects `url` to a Fossil archive, `rev`, and `hash`.
-
-## `fetchcvs` {#fetchcvs}
-
-Used with CVS. Expects `cvsRoot`, `tag`, and `hash`.
-
-## `fetchhg` {#fetchhg}
-
-Used with Mercurial. Expects `url`, `rev`, and `hash`.
-
-A number of fetcher functions wrap part of `fetchurl` and `fetchzip`. They are mainly convenience functions intended for commonly used destinations of source code in Nixpkgs. These wrapper fetchers are listed below.
-
-## `fetchFromGitea` {#fetchfromgitea}
-
-`fetchFromGitea` expects five arguments. `domain` is the gitea server name. `owner` is a string corresponding to the Gitea user or organization that controls this repository. `repo` corresponds to the name of the software repository. These are located at the top of every Gitea HTML page as `owner`/`repo`. `rev` corresponds to the Git commit hash or tag (e.g `v1.0`) that will be downloaded from Git. Finally, `hash` corresponds to the hash of the extracted directory. Again, other hash algorithms are also available but `hash` is currently preferred.
-
-## `fetchFromGitHub` {#fetchfromgithub}
-
-`fetchFromGitHub` expects four arguments. `owner` is a string corresponding to the GitHub user or organization that controls this repository. `repo` corresponds to the name of the software repository. These are located at the top of every GitHub HTML page as `owner`/`repo`. `rev` corresponds to the Git commit hash or tag (e.g `v1.0`) that will be downloaded from Git. Finally, `hash` corresponds to the hash of the extracted directory. Again, other hash algorithms are also available, but `hash` is currently preferred.
-
-To use a different GitHub instance, use `githubBase` (defaults to `"github.com"`).
-
-`fetchFromGitHub` uses `fetchzip` to download the source archive generated by GitHub for the specified revision. If `leaveDotGit`, `deepClone` or `fetchSubmodules` are set to `true`, `fetchFromGitHub` will use `fetchgit` instead. Refer to its section for documentation of these options.
-
-## `fetchFromGitLab` {#fetchfromgitlab}
-
-This is used with GitLab repositories. It behaves similarly to `fetchFromGitHub`, and expects `owner`, `repo`, `rev`, and `hash`.
-
-To use a specific GitLab instance, use `domain` (defaults to `"gitlab.com"`).
-
-
-## `fetchFromGitiles` {#fetchfromgitiles}
-
-This is used with Gitiles repositories. The arguments expected are similar to `fetchgit`.
-
-## `fetchFromBitbucket` {#fetchfrombitbucket}
-
-This is used with BitBucket repositories. The arguments expected are very similar to `fetchFromGitHub` above.
-
-## `fetchFromSavannah` {#fetchfromsavannah}
-
-This is used with Savannah repositories. The arguments expected are very similar to `fetchFromGitHub` above.
-
-## `fetchFromRepoOrCz` {#fetchfromrepoorcz}
-
-This is used with repo.or.cz repositories. The arguments expected are very similar to `fetchFromGitHub` above.
-
-## `fetchFromSourcehut` {#fetchfromsourcehut}
-
-This is used with sourcehut repositories. Similar to `fetchFromGitHub` above,
-it expects `owner`, `repo`, `rev` and `hash`, but don't forget the tilde (~)
-in front of the username! Expected arguments also include `vc` ("git" (default)
-or "hg"), `domain` and `fetchSubmodules`.
-
-If `fetchSubmodules` is `true`, `fetchFromSourcehut` uses `fetchgit`
-or `fetchhg` with `fetchSubmodules` or `fetchSubrepos` set to `true`,
-respectively. Otherwise, the fetcher uses `fetchzip`.
-
-## `requireFile` {#requirefile}
-
-`requireFile` allows requesting files that cannot be fetched automatically, but whose content is known.
-This is a useful last-resort workaround for license restrictions that prohibit redistribution, or for downloads that are only accessible after authenticating interactively in a browser.
-If the requested file is present in the Nix store, the resulting derivation will not be built, because its expected output is already available.
-Otherwise, the builder will run, but fail with a message explaining to the user how to provide the file. The following code, for example:
-
-```nix
-requireFile {
-  name = "jdk-${version}_linux-x64_bin.tar.gz";
-  url = "https://www.oracle.com/java/technologies/javase-jdk11-downloads.html";
-  hash = "sha256-lL00+F7jjT71nlKJ7HRQuUQ7kkxVYlZh//5msD8sjeI=";
-}
-```
-results in this error message:
-```
-***
-Unfortunately, we cannot download file jdk-11.0.10_linux-x64_bin.tar.gz automatically.
-Please go to https://www.oracle.com/java/technologies/javase-jdk11-downloads.html to download it yourself, and add it to the Nix store
-using either
-  nix-store --add-fixed sha256 jdk-11.0.10_linux-x64_bin.tar.gz
-or
-  nix-prefetch-url --type sha256 file:///path/to/jdk-11.0.10_linux-x64_bin.tar.gz
-
-***
-```
-
-This function should only be used by non-redistributable software with an unfree license that we need to require the user to download manually.
-It produces packages that cannot be built automatically.
-
-## `fetchtorrent` {#fetchtorrent}
-
-`fetchtorrent` expects two arguments. `url` which can either be a Magnet URI (Magnet Link) such as `magnet:?xt=urn:btih:dd8255ecdc7ca55fb0bbf81323d87062db1f6d1c` or an HTTP URL pointing to a `.torrent` file. It can also take a `config` argument which will craft a `settings.json` configuration file and give it to `transmission`, the underlying program that is performing the fetch. The available config options for `transmission` can be found [here](https://github.com/transmission/transmission/blob/main/docs/Editing-Configuration-Files.md#options)
-
-```nix
-{ fetchtorrent }:
-
-fetchtorrent {
-  config = { peer-limit-global = 100; };
-  url = "magnet:?xt=urn:btih:dd8255ecdc7ca55fb0bbf81323d87062db1f6d1c";
-  hash = "";
-}
-```
-
-### Parameters {#fetchtorrent-parameters}
-
-- `url`: Magnet URI (Magnet Link) such as `magnet:?xt=urn:btih:dd8255ecdc7ca55fb0bbf81323d87062db1f6d1c` or an HTTP URL pointing to a `.torrent` file.
-
-- `backend`: Which bittorrent program to use. Default: `"transmission"`. Valid values are `"rqbit"` or `"transmission"`. These are the two most suitable torrent clients for fetching in a fixed-output derivation at the time of writing, as they can be easily exited after usage. `rqbit` is written in Rust and has a smaller closure size than `transmission`, and the performance and peer discovery properties differs between these clients, requiring experimentation to decide upon which is the best.
-
-- `config`: When using `transmission` as the `backend`, a json configuration can
-  be supplied to transmission. Refer to the [upstream documentation](https://github.com/transmission/transmission/blob/main/docs/Editing-Configuration-Files.md) for information on how to configure.
-

doc/build-helpers/images.md

@@ -1,12 +0,0 @@
-# Images {#chap-images}
-
-This chapter describes tools for creating various types of images.
-
-```{=include=} sections
-images/appimagetools.section.md
-images/dockertools.section.md
-images/ocitools.section.md
-images/portableservice.section.md
-images/makediskimage.section.md
-images/binarycache.section.md
-```

doc/build-helpers/images/appimagetools.section.md

@@ -1,167 +0,0 @@
-# pkgs.appimageTools {#sec-pkgs-appimageTools}
-
-`pkgs.appimageTools` is a set of functions for extracting and wrapping [AppImage](https://appimage.org/) files.
-They are meant to be used if traditional packaging from source is infeasible, or if it would take too long.
-To quickly run an AppImage file, `pkgs.appimage-run` can be used as well.
-
-::: {.warning}
-The `appimageTools` API is unstable and may be subject to backwards-incompatible changes in the future.
-:::
-
-## Wrapping {#ssec-pkgs-appimageTools-wrapping}
-
-Use `wrapType2` to wrap any AppImage.
-This will create a FHS environment with many packages [expected to exist](https://github.com/AppImage/pkg2appimage/blob/master/excludelist) for the AppImage to work.
-`wrapType2` expects an argument with the `src` attribute, and either a `name` attribute or `pname` and `version` attributes.
-
-It will eventually call into [`buildFHSEnv`](#sec-fhs-environments), and any extra attributes in the argument to `wrapType2` will be passed through to it.
-This means that you can pass the `extraInstallCommands` attribute, for example, and it will have the same effect as described in [`buildFHSEnv`](#sec-fhs-environments).
-
-::: {.note}
-In the past, `appimageTools` provided both `wrapType1` and `wrapType2`, to be used depending on the type of AppImage that was being wrapped.
-However, [those were unified early 2020](https://github.com/NixOS/nixpkgs/pull/81833), meaning that both `wrapType1` and `wrapType2` have the same behaviour now.
-:::
-
-:::{.example #ex-wrapping-appimage-from-github}
-
-# Wrapping an AppImage from GitHub
-
-```nix
-{ appimageTools, fetchurl }:
-let
-  pname = "nuclear";
-  version = "0.6.30";
-
-  src = fetchurl {
-    url = "https://github.com/nukeop/nuclear/releases/download/v${version}/${pname}-v${version}.AppImage";
-    hash = "sha256-he1uGC1M/nFcKpMM9JKY4oeexJcnzV0ZRxhTjtJz6xw=";
-  };
-in
-appimageTools.wrapType2 {
-  inherit pname version src;
-}
-```
-
-:::
-
-The argument passed to `wrapType2` can also contain an `extraPkgs` attribute, which allows you to include additional packages inside the FHS environment your AppImage is going to run in.
-`extraPkgs` must be a function that returns a list of packages.
-There are a few ways to learn which dependencies an application needs:
-
-  - Looking through the extracted AppImage files, reading its scripts and running `patchelf` and `ldd` on its executables.
-    This can also be done in `appimage-run`, by setting `APPIMAGE_DEBUG_EXEC=bash`.
-  - Running `strace -vfefile` on the wrapped executable, looking for libraries that can't be found.
-
-:::{.example #ex-wrapping-appimage-with-extrapkgs}
-
-# Wrapping an AppImage with extra packages
-
-```nix
-{ appimageTools, fetchurl }:
-let
-  pname = "irccloud";
-  version = "0.16.0";
-
-  src = fetchurl {
-    url = "https://github.com/irccloud/irccloud-desktop/releases/download/v${version}/IRCCloud-${version}-linux-x86_64.AppImage";
-    sha256 = "sha256-/hMPvYdnVB1XjKgU2v47HnVvW4+uC3rhRjbucqin4iI=";
-  };
-in appimageTools.wrapType2 {
-  inherit pname version src;
-  extraPkgs = pkgs: [ pkgs.at-spi2-core ];
-}
-```
-
-:::
-
-## Extracting {#ssec-pkgs-appimageTools-extracting}
-
-Use `extract` if you need to extract the contents of an AppImage.
-This is usually used in Nixpkgs to install extra files in addition to [wrapping](#ssec-pkgs-appimageTools-wrapping) the AppImage.
-`extract` expects an argument with the `src` attribute, and either a `name` attribute or `pname` and `version` attributes.
-
-::: {.note}
-In the past, `appimageTools` provided both `extractType1` and `extractType2`, to be used depending on the type of AppImage that was being extracted.
-However, [those were unified early 2020](https://github.com/NixOS/nixpkgs/pull/81572), meaning that both `extractType1` and `extractType2` have the same behaviour as `extract` now.
-:::
-
-:::{.example #ex-extracting-appimage}
-
-# Extracting an AppImage to install extra files
-
-This example was adapted from a real package in Nixpkgs to show how `extract` is usually used in combination with `wrapType2`.
-Note how `appimageContents` is used in `extraInstallCommands` to install additional files that were extracted from the AppImage.
-
-```nix
-{ appimageTools, fetchurl }:
-let
-  pname = "irccloud";
-  version = "0.16.0";
-
-  src = fetchurl {
-    url = "https://github.com/irccloud/irccloud-desktop/releases/download/v${version}/IRCCloud-${version}-linux-x86_64.AppImage";
-    sha256 = "sha256-/hMPvYdnVB1XjKgU2v47HnVvW4+uC3rhRjbucqin4iI=";
-  };
-
-  appimageContents = appimageTools.extract {
-    inherit pname version src;
-  };
-in appimageTools.wrapType2 {
-  inherit pname version src;
-
-  extraPkgs = pkgs: [ pkgs.at-spi2-core ];
-
-  extraInstallCommands = ''
-    mv $out/bin/${pname}-${version} $out/bin/${pname}
-    install -m 444 -D ${appimageContents}/irccloud.desktop $out/share/applications/irccloud.desktop
-    install -m 444 -D ${appimageContents}/usr/share/icons/hicolor/512x512/apps/irccloud.png \
-      $out/share/icons/hicolor/512x512/apps/irccloud.png
-    substituteInPlace $out/share/applications/irccloud.desktop \
-      --replace 'Exec=AppRun' 'Exec=${pname}'
-  '';
-}
-```
-
-:::
-
-The argument passed to `extract` can also contain a `postExtract` attribute, which allows you to execute additional commands after the files are extracted from the AppImage.
-`postExtract` must be a string with commands to run.
-
-:::{.example #ex-extracting-appimage-with-postextract}
-
-# Extracting an AppImage to install extra files, using `postExtract`
-
-This is a rewrite of [](#ex-extracting-appimage) to use `postExtract`.
-
-```nix
-{ appimageTools, fetchurl }:
-let
-  pname = "irccloud";
-  version = "0.16.0";
-
-  src = fetchurl {
-    url = "https://github.com/irccloud/irccloud-desktop/releases/download/v${version}/IRCCloud-${version}-linux-x86_64.AppImage";
-    sha256 = "sha256-/hMPvYdnVB1XjKgU2v47HnVvW4+uC3rhRjbucqin4iI=";
-  };
-
-  appimageContents = appimageTools.extract {
-    inherit pname version src;
-    postExtract = ''
-      substituteInPlace $out/irccloud.desktop --replace 'Exec=AppRun' 'Exec=${pname}'
-    '';
-  };
-in appimageTools.wrapType2 {
-  inherit pname version src;
-
-  extraPkgs = pkgs: [ pkgs.at-spi2-core ];
-
-  extraInstallCommands = ''
-    mv $out/bin/${pname}-${version} $out/bin/${pname}
-    install -m 444 -D ${appimageContents}/irccloud.desktop $out/share/applications/irccloud.desktop
-    install -m 444 -D ${appimageContents}/usr/share/icons/hicolor/512x512/apps/irccloud.png \
-      $out/share/icons/hicolor/512x512/apps/irccloud.png
-  '';
-}
-```
-
-:::

doc/build-helpers/images/binarycache.section.md

@@ -1,58 +0,0 @@
-# pkgs.mkBinaryCache {#sec-pkgs-binary-cache}
-
-`pkgs.mkBinaryCache` is a function for creating Nix flat-file binary caches.
-Such a cache exists as a directory on disk, and can be used as a Nix substituter by passing `--substituter file:///path/to/cache` to Nix commands.
-
-Nix packages are most commonly shared between machines using [HTTP, SSH, or S3](https://nixos.org/manual/nix/stable/package-management/sharing-packages.html), but a flat-file binary cache can still be useful in some situations.
-For example, you can copy it directly to another machine, or make it available on a network file system.
-It can also be a convenient way to make some Nix packages available inside a container via bind-mounting.
-
-`mkBinaryCache` expects an argument with the `rootPaths` attribute.
-`rootPaths` must be a list of derivations.
-The transitive closure of these derivations' outputs will be copied into the cache.
-
-::: {.note}
-This function is meant for advanced use cases.
-The more idiomatic way to work with flat-file binary caches is via the [nix-copy-closure](https://nixos.org/manual/nix/stable/command-ref/nix-copy-closure.html) command.
-You may also want to consider [dockerTools](#sec-pkgs-dockerTools) for your containerization needs.
-:::
-
-[]{#sec-pkgs-binary-cache-example}
-:::{.example #ex-mkbinarycache-copying-package-closure}
-
-# Copying a package and its closure to another machine with `mkBinaryCache`
-
-The following derivation will construct a flat-file binary cache containing the closure of `hello`.
-
-```nix
-{ mkBinaryCache, hello }:
-mkBinaryCache {
-  rootPaths = [hello];
-}
-```
-
-Build the cache on a machine.
-Note that the command still builds the exact nix package above, but adds some boilerplate to build it directly from an expression.
-
-```shellSession
-$ nix-build -E 'let pkgs = import <nixpkgs> {}; in pkgs.callPackage ({ mkBinaryCache, hello }: mkBinaryCache { rootPaths = [hello]; }) {}'
-/nix/store/azf7xay5xxdnia4h9fyjiv59wsjdxl0g-binary-cache
-```
-
-Copy the resulting directory to another machine, which we'll call `host2`:
-
-```shellSession
-$ scp result host2:/tmp/hello-cache
-```
-
-At this point, the cache can be used as a substituter when building derivations on `host2`:
-
-```shellSession
-$ nix-build -A hello '<nixpkgs>' \
-  --option require-sigs false \
-  --option trusted-substituters file:///tmp/hello-cache \
-  --option substituters file:///tmp/hello-cache
-/nix/store/zhl06z4lrfrkw5rp0hnjjfrgsclzvxpm-hello-2.12.1
-```
-
-:::

doc/build-helpers/images/makediskimage.section.md

@@ -1,106 +0,0 @@
-# `<nixpkgs/nixos/lib/make-disk-image.nix>` {#sec-make-disk-image}
-
-`<nixpkgs/nixos/lib/make-disk-image.nix>` is a function to create _disk images_ in multiple formats: raw, QCOW2 (QEMU), QCOW2-Compressed (compressed version), VDI (VirtualBox), VPC (VirtualPC).
-
-This function can create images in two ways:
-
-- using `cptofs` without any virtual machine to create a Nix store disk image,
-- using a virtual machine to create a full NixOS installation.
-
-When testing early-boot or lifecycle parts of NixOS such as a bootloader or multiple generations, it is necessary to opt for a full NixOS system installation.
-Whereas for many web servers, applications, it is possible to work with a Nix store only disk image and is faster to build.
-
-NixOS tests also use this function when preparing the VM. The `cptofs` method is used when `virtualisation.useBootLoader` is false (the default). Otherwise the second method is used.
-
-## Features {#sec-make-disk-image-features}
-
-For reference, read the function signature source code for documentation on arguments: <https://github.com/NixOS/nixpkgs/blob/master/nixos/lib/make-disk-image.nix>.
-Features are separated in various sections depending on if you opt for a Nix-store only image or a full NixOS image.
-
-### Common {#sec-make-disk-image-features-common}
-
-- arbitrary NixOS configuration
-- automatic or bound disk size: `diskSize` parameter, `additionalSpace` can be set when `diskSize` is `auto` to add a constant of disk space
-- multiple partition table layouts: EFI, legacy, legacy + GPT, hybrid, none through `partitionTableType` parameter
-- OVMF or EFI firmwares and variables templates can be customized
-- root filesystem `fsType` can be customized to whatever `mkfs.${fsType}` exist during operations
-- root filesystem label can be customized, defaults to `nix-store` if it's a Nix store image, otherwise `nixpkgs/nixos`
-- arbitrary code can be executed after disk image was produced with `postVM`
-- the current nixpkgs can be realized as a channel in the disk image, which will change the hash of the image when the sources are updated
-- additional store paths can be provided through `additionalPaths`
-
-### Full NixOS image {#sec-make-disk-image-features-full-image}
-
-- arbitrary contents with permissions can be placed in the target filesystem using `contents`
-- a `/etc/nixpkgs/nixos/configuration.nix` can be provided through `configFile`
-- bootloaders are supported
-- EFI variables can be mutated during image production and the result is exposed in `$out`
-- boot partition size when partition table is `efi` or `hybrid`
-
-### On bit-to-bit reproducibility {#sec-make-disk-image-features-reproducibility}
-
-Images are **NOT** deterministic, please do not hesitate to try to fix this, source of determinisms are (not exhaustive) :
-
-- bootloader installation have timestamps
-- SQLite Nix store database contain registration times
-- `/etc/shadow` is in a non-deterministic order
-
-A `deterministic` flag is available for best efforts determinism.
-
-## Usage {#sec-make-disk-image-usage}
-
-To produce a Nix-store only image:
-```nix
-let
-  pkgs = import <nixpkgs> {};
-  lib = pkgs.lib;
-  make-disk-image = import <nixpkgs/nixos/lib/make-disk-image.nix>;
-in
-  make-disk-image {
-    inherit pkgs lib;
-    config = {};
-    additionalPaths = [ ];
-    format = "qcow2";
-    onlyNixStore = true;
-    partitionTableType = "none";
-    installBootLoader = false;
-    touchEFIVars = false;
-    diskSize = "auto";
-    additionalSpace = "0M"; # Defaults to 512M.
-    copyChannel = false;
-  }
-```
-
-Some arguments can be left out, they are shown explicitly for the sake of the example.
-
-Building this derivation will provide a QCOW2 disk image containing only the Nix store and its registration information.
-
-To produce a NixOS installation image disk with UEFI and bootloader installed:
-```nix
-let
-  pkgs = import <nixpkgs> {};
-  lib = pkgs.lib;
-  make-disk-image = import <nixpkgs/nixos/lib/make-disk-image.nix>;
-  evalConfig = import <nixpkgs/nixos/lib/eval-config.nix>;
-in
-  make-disk-image {
-    inherit pkgs lib;
-    inherit (evalConfig {
-      modules = [
-        {
-          fileSystems."/" = { device = "/dev/vda"; fsType = "ext4"; autoFormat = true; };
-          boot.grub.device = "/dev/vda";
-        }
-      ];
-    }) config;
-    format = "qcow2";
-    onlyNixStore = false;
-    partitionTableType = "legacy+gpt";
-    installBootLoader = true;
-    touchEFIVars = true;
-    diskSize = "auto";
-    additionalSpace = "0M"; # Defaults to 512M.
-    copyChannel = false;
-    memSize = 2048; # Qemu VM memory size in megabytes. Defaults to 1024M.
-  }
-```

doc/build-helpers/images/ocitools.section.md

@@ -1,104 +0,0 @@
-# pkgs.ociTools {#sec-pkgs-ociTools}
-
-`pkgs.ociTools` is a set of functions for creating runtime container bundles according to the [OCI runtime specification v1.0.0](https://github.com/opencontainers/runtime-spec/blob/v1.0.0/spec.md).
-It makes no assumptions about the container runner you choose to use to run the created container.
-
-The set of functions in `pkgs.ociTools` currently does not handle the [OCI image specification](https://github.com/opencontainers/image-spec).
-
-At a high-level an OCI implementation would download an OCI Image then unpack that image into an OCI Runtime filesystem bundle.
-At this point the OCI Runtime Bundle would be run by an OCI Runtime.
-`pkgs.ociTools` provides utilities to create OCI Runtime bundles.
-
-## buildContainer {#ssec-pkgs-ociTools-buildContainer}
-
-This function creates an OCI runtime container (consisting of a `config.json` and a root filesystem directory) that runs a single command inside of it.
-The nix store of the container will contain all referenced dependencies of the given command.
-
-This function has an assumption that the container will run on POSIX platforms, and sets configurations (such as the user running the process or certain mounts) according to this assumption.
-Because of this, a container built with `buildContainer` will not work on Windows or other non-POSIX platforms without modifications to the container configuration.
-These modifications aren't supported by `buildContainer`.
-
-For `linux` platforms, `buildContainer` also configures the following namespaces (see {manpage}`unshare(1)`) to isolate the OCI container from the global namespace:
-PID, network, mount, IPC, and UTS.
-
-Note that no user namespace is created, which means that you won't be able to run the container unless you are the `root` user.
-
-### Inputs {#ssec-pkgs-ociTools-buildContainer-inputs}
-
-`buildContainer` expects an argument with the following attributes:
-
-`args` (List of String)
-
-: Specifies a set of arguments to run inside the container.
-  Any packages referenced by `args` will be made available inside the container.
-
-`mounts` (Attribute Set; _optional_)
-
-: Would specify additional mounts that the runtime must make available to the container.
-
-  :::{.warning}
-  As explained in [issue #290879](https://github.com/NixOS/nixpkgs/issues/290879), this attribute is currently ignored.
-  :::
-
-  :::{.note}
-  `buildContainer` includes a minimal set of necessary filesystems to be mounted into the container, and this set can't be changed with the `mounts` attribute.
-  :::
-
-  _Default value:_ `{}`.
-
-`readonly` (Boolean; _optional_)
-
-: If `true`, sets the container's root filesystem as read-only.
-
-  _Default value:_ `false`.
-
-`os` **DEPRECATED**
-
-: Specifies the operating system on which the container filesystem is based on.
-  If specified, its value should follow the [OCI Image Configuration Specification](https://github.com/opencontainers/image-spec/blob/main/config.md#properties).
-  According to the linked specification, all possible values for `$GOOS` in [the Go docs](https://go.dev/doc/install/source#environment) should be valid, but will commonly be one of `darwin` or `linux`.
-
-  _Default value:_ `"linux"`.
-
-`arch` **DEPRECATED**
-
-: Used to specify the architecture for which the binaries in the container filesystem have been compiled.
-  If specified, its value should follow the [OCI Image Configuration Specification](https://github.com/opencontainers/image-spec/blob/main/config.md#properties).
-  According to the linked specification, all possible values for `$GOARCH` in [the Go docs](https://go.dev/doc/install/source#environment) should be valid, but will commonly be one of `386`, `amd64`, `arm`, or `arm64`.
-
-  _Default value:_ `x86_64`.
-
-### Examples {#ssec-pkgs-ociTools-buildContainer-examples}
-
-::: {.example #ex-ociTools-buildContainer-bash}
-# Creating an OCI runtime container that runs `bash`
-
-This example uses `ociTools.buildContainer` to create a simple container that runs `bash`.
-
-```nix
-{ ociTools, lib, bash }:
-ociTools.buildContainer {
-  args = [
-    (lib.getExe bash)
-  ];
-
-  readonly = false;
-}
-```
-
-As an example of how to run the container generated by this package, we'll use `runc` to start the container.
-Any other tool that supports OCI containers could be used instead.
-
-```shell
-$ nix-build
-(some output removed for clarity)
-/nix/store/7f9hgx0arvhzp2a3qphp28rxbn748l25-join
-
-$ cd /nix/store/7f9hgx0arvhzp2a3qphp28rxbn748l25-join
-$ nix-shell -p runc
-[nix-shell:/nix/store/7f9hgx0arvhzp2a3qphp28rxbn748l25-join]$ sudo runc run ocitools-example
-help
-GNU bash, version 5.2.26(1)-release (x86_64-pc-linux-gnu)
-(some output removed for clarity)
-```
-:::

doc/build-helpers/images/portableservice.section.md

@@ -1,174 +0,0 @@
-# pkgs.portableService {#sec-pkgs-portableService}
-
-`pkgs.portableService` is a function to create [Portable Services](https://systemd.io/PORTABLE_SERVICES/) in a read-only, immutable, `squashfs` raw disk image.
-This lets you use Nix to build images which can be run on many recent Linux distributions.
-
-::: {.note}
-Portable services are supported starting with systemd 239 (released on 2018-06-22).
-:::
-
-The generated image will contain the file system structure as required by the Portable Services specification, along with the packages given to `portableService` and all of their dependencies.
-When generated, the image will exist in the Nix store with the `.raw` file extension, as required by the specification.
-See [](#ex-portableService-hello) to understand how to use the output of `portableService`.
-
-## Inputs {#ssec-pkgs-portableService-inputs}
-
-`portableService` expects one argument with the following attributes:
-
-`pname` (String)
-
-: The name of the portable service.
-  The generated image will be named according to the template `$pname_$version.raw`, which is supported by the Portable Services specification.
-
-`version` (String)
-
-: The version of the portable service.
-  The generated image will be named according to the template `$pname_$version.raw`, which is supported by the Portable Services specification.
-
-`units` (List of Attribute Set)
-
-: A list of derivations for systemd unit files.
-  Each derivation must produce a single file, and must have a name that starts with the value of `pname` and ends with the suffix of the unit type (e.g. ".service", ".socket", ".timer", and so on).
-  See [](#ex-portableService-hello) to better understand this naming constraint.
-
-`description` (String or Null; _optional_)
-
-: If specified, the value is added as `PORTABLE_PRETTY_NAME` to the `/etc/os-release` file in the generated image.
-  This could be used to provide more information to anyone inspecting the image.
-
-  _Default value:_ `null`.
-
-`homepage` (String or Null; _optional_)
-
-: If specified, the value is added as `HOME_URL` to the `/etc/os-release` file in the generated image.
-  This could be used to provide more information to anyone inspecting the image.
-
-  _Default value:_ `null`.
-
-`symlinks` (List of Attribute Set; _optional_)
-
-: A list of attribute sets in the format `{object, symlink}`.
-  For each item in the list, `portableService` will create a symlink in the path specified by `symlink` (relative to the root of the image) that points to `object`.
-
-  All packages that `object` depends on and their dependencies are automatically copied into the image.
-
-  This can be used to create symlinks for applications that assume some files to exist globally (`/etc/ssl` or `/bin/bash`, for example).
-  See [](#ex-portableService-symlinks) to understand how to do that.
-
-  _Default value:_ `[]`.
-
-`contents` (List of Attribute Set; _optional_)
-
-: A list of additional derivations to be included as-is in the image.
-  These derivations will be included directly in a `/nix/store` directory inside the image.
-
-  _Default value:_ `[]`.
-
-`squashfsTools` (Attribute Set; _optional_)
-
-: Allows you to override the package that provides {manpage}`mksquashfs(1)`, which is used internally by `portableService`.
-
-  _Default value:_ `pkgs.squashfsTools`.
-
-`squash-compression` (String; _optional_)
-
-: Passed as the compression option to {manpage}`mksquashfs(1)`, which is used internally by `portableService`.
-
-  _Default value:_ `"xz -Xdict-size 100%"`.
-
-`squash-block-size` (String; _optional_)
-
-: Passed as the block size option to {manpage}`mksquashfs(1)`, which is used internally by `portableService`.
-
-  _Default value:_ `"1M"`.
-
-## Examples {#ssec-pkgs-portableService-examples}
-
-[]{#ex-pkgs-portableService}
-:::{.example #ex-portableService-hello}
-# Building a Portable Service image
-
-The following example builds a Portable Service image with the `hello` package, along with a service unit that runs it.
-
-```nix
-{ lib, writeText, portableService, hello }:
-let
-  hello-service = writeText "hello.service" ''
-    [Unit]
-    Description=Hello world service
-
-    [Service]
-    Type=oneshot
-    ExecStart=${lib.getExe hello}
-  '';
-in
-portableService {
-  pname = "hello";
-  inherit (hello) version;
-  units = [ hello-service ];
-}
-```
-
-After building the package, the generated image can be loaded into a system through {manpage}`portablectl(1)`:
-
-```shell
-$ nix-build
-(some output removed for clarity)
-/nix/store/8c20z1vh7z8w8dwagl8w87b45dn5k6iq-hello-img-2.12.1
-
-$ portablectl attach /nix/store/8c20z1vh7z8w8dwagl8w87b45dn5k6iq-hello-img-2.12.1/hello_2.12.1.raw
-Created directory /etc/systemd/system.attached.
-Created directory /etc/systemd/system.attached/hello.service.d.
-Written /etc/systemd/system.attached/hello.service.d/20-portable.conf.
-Created symlink /etc/systemd/system.attached/hello.service.d/10-profile.conf → /usr/lib/systemd/portable/profile/default/service.conf.
-Copied /etc/systemd/system.attached/hello.service.
-Created symlink /etc/portables/hello_2.12.1.raw → /nix/store/8c20z1vh7z8w8dwagl8w87b45dn5k6iq-hello-img-2.12.1/hello_2.12.1.raw.
-
-$ systemctl start hello
-$ journalctl -u hello
-Feb 28 22:39:16 hostname systemd[1]: Starting Hello world service...
-Feb 28 22:39:16 hostname hello[102887]: Hello, world!
-Feb 28 22:39:16 hostname systemd[1]: hello.service: Deactivated successfully.
-Feb 28 22:39:16 hostname systemd[1]: Finished Hello world service.
-
-$ portablectl detach hello_2.12.1
-Removed /etc/systemd/system.attached/hello.service.
-Removed /etc/systemd/system.attached/hello.service.d/10-profile.conf.
-Removed /etc/systemd/system.attached/hello.service.d/20-portable.conf.
-Removed /etc/systemd/system.attached/hello.service.d.
-Removed /etc/portables/hello_2.12.1.raw.
-Removed /etc/systemd/system.attached.
-```
-:::
-
-:::{.example #ex-portableService-symlinks}
-# Specifying symlinks when building a Portable Service image
-
-Some services may expect files or directories to be available globally.
-An example is a service which expects all trusted SSL certificates to exist in a specific location by default.
-
-To make things available globally, you must specify the `symlinks` attribute when using `portableService`.
-The following package builds on the package from [](#ex-portableService-hello) to make `/etc/ssl` available globally (this is only for illustrative purposes, because `hello` doesn't use `/etc/ssl`).
-
-```nix
-{ lib, writeText, portableService, hello, cacert }:
-let
-  hello-service = writeText "hello.service" ''
-    [Unit]
-    Description=Hello world service
-
-    [Service]
-    Type=oneshot
-    ExecStart=${lib.getExe hello}
-  '';
-in
-portableService {
-  pname = "hello";
-  inherit (hello) version;
-  units = [ hello-service ];
-  symlinks = [
-    { object = "${cacert}/etc/ssl"; symlink = "/etc/ssl"; }
-  ];
-}
-```
-:::

doc/build-helpers/special.md

@@ -1,12 +0,0 @@
-# Special build helpers {#chap-special}
-
-This chapter describes several special build helpers.
-
-```{=include=} sections
-special/fakenss.section.md
-special/fhs-environments.section.md
-special/makesetuphook.section.md
-special/mkshell.section.md
-special/vm-tools.section.md
-special/checkpoint-build.section.md
-```

doc/build-helpers/special/checkpoint-build.section.md

@@ -1,43 +0,0 @@
-# pkgs.checkpointBuildTools  {#sec-checkpoint-build}
-
-`pkgs.checkpointBuildTools` provides a way to build derivations incrementally. It consists of two functions to make checkpoint builds using Nix possible.
-
-For hermeticity, Nix derivations do not allow any state to be carried over between builds, making a transparent incremental build within a derivation impossible.
-
-However, we can tell Nix explicitly what the previous build state was, by representing that previous state as a derivation output. This allows the passed build state to be used for an incremental build.
-
-To change a normal derivation to a checkpoint based build, these steps must be taken:
-  - apply `prepareCheckpointBuild` on the desired derivation, e.g.
-```nix
-{
-  checkpointArtifacts = (pkgs.checkpointBuildTools.prepareCheckpointBuild pkgs.virtualbox);
-}
-```
-  - change something you want in the sources of the package, e.g. use a source override:
-```nix
-{
-  changedVBox = pkgs.virtualbox.overrideAttrs (old: {
-    src = path/to/vbox/sources;
-  });
-}
-```
-  - use `mkCheckpointBuild changedVBox checkpointArtifacts`
-  - enjoy shorter build times
-
-## Example {#sec-checkpoint-build-example}
-```nix
-{ pkgs ? import <nixpkgs> {} }:
-let
-  inherit (pkgs.checkpointBuildTools)
-    prepareCheckpointBuild
-    mkCheckpointBuild
-    ;
-  helloCheckpoint = prepareCheckpointBuild pkgs.hello;
-  changedHello = pkgs.hello.overrideAttrs (_: {
-    doCheck = false;
-    patchPhase = ''
-      sed -i 's/Hello, world!/Hello, Nix!/g' src/hello.c
-    '';
-  });
-in mkCheckpointBuild changedHello helloCheckpoint
-```

doc/build-helpers/special/fakenss.section.md

@@ -1,77 +0,0 @@
-# fakeNss {#sec-fakeNss}
-
-Provides `/etc/passwd` and `/etc/group` files that contain `root` and `nobody`, allowing user/group lookups to work in binaries that insist on doing those.
-This might be a better choice than a custom script running `useradd` and related utilities if you only need those files to exist with some entries.
-
-`fakeNss` also provides `/etc/nsswitch.conf`, configuring NSS host resolution to first check `/etc/hosts` before checking DNS, since the default in the absence of a config file (`dns [!UNAVAIL=return] files`) is quite unexpected.
-
-It also creates an empty directory at `/var/empty` because it uses that as the home directory for the `root` and `nobody` users.
-The `/var/empty` directory can also be used as a `chroot` target to prevent file access in processes that do not need to access files, if your container runs such processes.
-
-The user entries created by `fakeNss` use the `/bin/sh` shell, which is not provided by `fakeNss` because in most cases it won't be used.
-If you need that to be available, see [`dockerTools.binSh`](#sssec-pkgs-dockerTools-helpers-binSh) or provide your own.
-
-## Inputs {#sec-fakeNss-inputs}
-
-`fakeNss` is made available in Nixpkgs as a package rather than a function, but it has two attributes that can be overridden and might be useful in particular cases.
-For more details on how overriding works, see [](#ex-fakeNss-overriding) and [](#sec-pkg-override).
-
-`extraPasswdLines` (List of Strings; _optional_)
-
-: A list of lines that will be added to `/etc/passwd`.
-  Useful if extra users need to exist in the output of `fakeNss`.
-  If `extraPasswdLines` is specified, it will **not** override the `root` and `nobody` entries created by `fakeNss`.
-  Those entries will always exist.
-
-  Lines specified here must follow the format in {manpage}`passwd(5)`.
-
-  _Default value:_ `[]`.
-
-`extraGroupLines` (List of Strings; _optional_)
-
-: A list of lines that will be added to `/etc/group`.
-  Useful if extra groups need to exist in the output of `fakeNss`.
-  If `extraGroupLines` is specified, it will **not** override the `root` and `nobody` entries created by `fakeNss`.
-  Those entries will always exist.
-
-  Lines specified here must follow the format in {manpage}`group(5)`.
-
-  _Default value:_ `[]`.
-
-## Examples {#sec-fakeNss-examples}
-
-:::{.example #ex-fakeNss-dockerTools-buildImage}
-# Using `fakeNss` with `dockerTools.buildImage`
-
-This example shows how to use `fakeNss` as-is.
-It is useful with functions in `dockerTools` to allow building Docker images that have the `/etc/passwd` and `/etc/group` files.
-This example includes the `hello` binary in the image so it can do something besides just have the extra files.
-
-```nix
-{ dockerTools, fakeNss, hello }:
-dockerTools.buildImage {
-  name = "image-with-passwd";
-  tag = "latest";
-
-  copyToRoot = [ fakeNss hello ];
-
-  config = {
-    Cmd = [ "/bin/hello" ];
-  };
-}
-```
-:::
-
-:::{.example #ex-fakeNss-overriding}
-# Using `fakeNss` with an override to add extra lines
-
-The following code uses `override` to add extra lines to `/etc/passwd` and `/etc/group` to create another user and group entry.
-
-```nix
-{ fakeNss }:
-fakeNss.override {
-  extraPasswdLines = ["newuser:x:9001:9001:new user:/var/empty:/bin/sh"];
-  extraGroupLines = ["newuser:x:9001:"];
-}
-```
-:::

doc/build-helpers/special/fhs-environments.section.md

@@ -1,60 +0,0 @@
-# buildFHSEnv {#sec-fhs-environments}
-
-`buildFHSEnv` provides a way to build and run FHS-compatible lightweight sandboxes. It creates an isolated root filesystem with the host's `/nix/store`, so its footprint in terms of disk space is quite small. This allows you to run software which is hard or unfeasible to patch for NixOS; 3rd-party source trees with FHS assumptions, games distributed as tarballs, software with integrity checking and/or external self-updated binaries for instance.
-It uses Linux' namespaces feature to create temporary lightweight environments which are destroyed after all child processes exit, without requiring elevated privileges. It works similar to containerisation technology such as Docker or FlatPak but provides no security-relevant separation from the host system.
-
-Accepted arguments are:
-
-- `name`
-        The name of the environment, and the wrapper executable if `pname` is unset.
-- `pname`
-        The pname of the environment and the wrapper executable.
-- `version`
-        The version of the environment.
-- `targetPkgs`
-        Packages to be installed for the main host's architecture (i.e. x86_64 on x86_64 installations). Along with libraries binaries are also installed.
-- `multiPkgs`
-        Packages to be installed for all architectures supported by a host (i.e. i686 and x86_64 on x86_64 installations). Only libraries are installed by default.
-- `multiArch`
-        Whether to install 32bit multiPkgs into the FHSEnv in 64bit environments
-- `extraBuildCommands`
-        Additional commands to be executed for finalizing the directory structure.
-- `extraBuildCommandsMulti`
-        Like `extraBuildCommands`, but executed only on multilib architectures.
-- `extraOutputsToInstall`
-        Additional derivation outputs to be linked for both target and multi-architecture packages.
-- `extraInstallCommands`
-        Additional commands to be executed for finalizing the derivation with runner script.
-- `runScript`
-        A shell command to be executed inside the sandbox. It defaults to `bash`. Command line arguments passed to the resulting wrapper are appended to this command by default.
-        This command must be escaped; i.e. `"foo app" --do-stuff --with "some file"`. See `lib.escapeShellArgs`.
-- `profile`
-        Optional script for `/etc/profile` within the sandbox.
-
-You can create a simple environment using a `shell.nix` like this:
-
-```nix
-{ pkgs ? import <nixpkgs> {} }:
-
-(pkgs.buildFHSEnv {
-  name = "simple-x11-env";
-  targetPkgs = pkgs: (with pkgs; [
-    udev
-    alsa-lib
-  ]) ++ (with pkgs.xorg; [
-    libX11
-    libXcursor
-    libXrandr
-  ]);
-  multiPkgs = pkgs: (with pkgs; [
-    udev
-    alsa-lib
-  ]);
-  runScript = "bash";
-}).env
-```
-
-Running `nix-shell` on it would drop you into a shell inside an FHS env where those libraries and binaries are available in FHS-compliant paths. Applications that expect an FHS structure (i.e. proprietary binaries) can run inside this environment without modification.
-You can build a wrapper by running your binary in `runScript`, e.g. `./bin/start.sh`. Relative paths work as expected.
-
-Additionally, the FHS builder links all relocated gsettings-schemas (the glib setup-hook moves them to `share/gsettings-schemas/${name}/glib-2.0/schemas`) to their standard FHS location. This means you don't need to wrap binaries with `wrapGApps*` hook.

doc/build-helpers/special/makesetuphook.section.md

@@ -1,55 +0,0 @@
-# pkgs.makeSetupHook {#sec-pkgs.makeSetupHook}
-
-`pkgs.makeSetupHook` is a build helper that produces hooks that go in to `nativeBuildInputs`
-
-## Usage {#sec-pkgs.makeSetupHook-usage}
-
-```nix
-pkgs.makeSetupHook {
-  name = "something-hook";
-  propagatedBuildInputs = [ pkgs.commandsomething ];
-  depsTargetTargetPropagated = [ pkgs.libsomething ];
-} ./script.sh;
-```
-
-### setup hook that depends on the hello package and runs hello and @shell@ is substituted with path to bash {#sec-pkgs.makeSetupHook-usage-example}
-
-```nix
-pkgs.makeSetupHook
-  {
-    name = "run-hello-hook";
-    # Put dependencies here if they have hooks or necessary dependencies propagated
-    # otherwise prefer direct paths to executables.
-    propagatedBuildInputs = [
-      pkgs.hello
-      pkgs.cowsay
-    ];
-    substitutions = {
-      shell = "${pkgs.bash}/bin/bash";
-      cowsay = "${pkgs.cowsay}/bin/cowsay";
-    };
-  }
-  (
-    writeScript "run-hello-hook.sh" ''
-      #!@shell@
-      # the direct path to the executable has to be here because
-      # this will be run when the file is sourced
-      # at which point '$PATH' has not yet been populated with inputs
-      @cowsay@ cow
-
-      _printHelloHook() {
-        hello
-      }
-      preConfigureHooks+=(_printHelloHook)
-    ''
-  );
-```
-
-## Attributes {#sec-pkgs.makeSetupHook-attributes}
-
-* `name` Set the name of the hook.
-* `propagatedBuildInputs` Runtime dependencies (such as binaries) of the hook.
-* `depsTargetTargetPropagated` Non-binary dependencies.
-* `meta`
-* `passthru`
-* `substitutions` Variables for `substituteAll`

doc/build-helpers/special/mkshell.section.md

@@ -1,41 +0,0 @@
-# pkgs.mkShell {#sec-pkgs-mkShell}
-
-`pkgs.mkShell` is a specialized `stdenv.mkDerivation` that removes some
-repetition when using it with `nix-shell` (or `nix develop`).
-
-## Usage {#sec-pkgs-mkShell-usage}
-
-Here is a common usage example:
-
-```nix
-{ pkgs ? import <nixpkgs> {} }:
-pkgs.mkShell {
-  packages = [ pkgs.gnumake ];
-
-  inputsFrom = [ pkgs.hello pkgs.gnutar ];
-
-  shellHook = ''
-    export DEBUG=1
-  '';
-}
-```
-
-## Attributes {#sec-pkgs-mkShell-attributes}
-
-* `name` (default: `nix-shell`). Set the name of the derivation.
-* `packages` (default: `[]`). Add executable packages to the `nix-shell` environment.
-* `inputsFrom` (default: `[]`). Add build dependencies of the listed derivations to the `nix-shell` environment.
-* `shellHook` (default: `""`). Bash statements that are executed by `nix-shell`.
-
-... all the attributes of `stdenv.mkDerivation`.
-
-## Variants {#sec-pkgs-mkShell-variants}
-
-`pkgs.mkShellNoCC` is a variant that uses `stdenvNoCC` instead of `stdenv` as base environment. This is useful if no C compiler is needed in the shell environment.
-
-## Building the shell {#sec-pkgs-mkShell-building}
-
-This derivation output will contain a text file that contains a reference to
-all the build inputs. This is useful in CI where we want to make sure that
-every derivation, and its dependencies, build properly. Or when creating a GC
-root so that the build dependencies don't get garbage-collected.

doc/build-helpers/special/vm-tools.section.md

@@ -1,148 +0,0 @@
-# vmTools {#sec-vm-tools}
-
-A set of VM related utilities, that help in building some packages in more advanced scenarios.
-
-## `vmTools.createEmptyImage` {#vm-tools-createEmptyImage}
-
-A bash script fragment that produces a disk image at `destination`.
-
-### Attributes {#vm-tools-createEmptyImage-attributes}
-
-* `size`. The disk size, in MiB.
-* `fullName`. Name that will be written to `${destination}/nix-support/full-name`.
-* `destination` (optional, default `$out`). Where to write the image files.
-
-## `vmTools.runInLinuxVM` {#vm-tools-runInLinuxVM}
-
-Run a derivation in a Linux virtual machine (using Qemu/KVM).
-By default, there is no disk image; the root filesystem is a `tmpfs`, and the Nix store is shared with the host (via the [9P protocol](https://wiki.qemu.org/Documentation/9p#9p_Protocol)).
-Thus, any pure Nix derivation should run unmodified.
-
-If the build fails and Nix is run with the `-K/--keep-failed` option, a script `run-vm` will be left behind in the temporary build directory that allows you to boot into the VM and debug it interactively.
-
-### Attributes {#vm-tools-runInLinuxVM-attributes}
-
-* `preVM` (optional). Shell command to be evaluated *before* the VM is started (i.e., on the host).
-* `memSize` (optional, default `512`). The memory size of the VM in MiB.
-* `diskImage` (optional). A file system image to be attached to `/dev/sda`.
-  Note that currently we expect the image to contain a filesystem, not a full disk image with a partition table etc.
-
-### Examples {#vm-tools-runInLinuxVM-examples}
-
-Build the derivation hello inside a VM:
-```nix
-{ pkgs }: with pkgs; with vmTools;
-runInLinuxVM hello
-```
-
-Build inside a VM with extra memory:
-```nix
-{ pkgs }: with pkgs; with vmTools;
-runInLinuxVM (hello.overrideAttrs (_: { memSize = 1024; }))
-```
-
-Use VM with a disk image (implicitly sets `diskImage`, see [`vmTools.createEmptyImage`](#vm-tools-createEmptyImage)):
-```nix
-{ pkgs }: with pkgs; with vmTools;
-runInLinuxVM (hello.overrideAttrs (_: {
-  preVM = createEmptyImage {
-    size = 1024;
-    fullName = "vm-image";
-  };
-}))
-```
-
-## `vmTools.extractFs` {#vm-tools-extractFs}
-
-Takes a file, such as an ISO, and extracts its contents into the store.
-
-### Attributes {#vm-tools-extractFs-attributes}
-
-* `file`. Path to the file to be extracted.
-  Note that currently we expect the image to contain a filesystem, not a full disk image with a partition table etc.
-* `fs` (optional). Filesystem of the contents of the file.
-
-### Examples {#vm-tools-extractFs-examples}
-
-Extract the contents of an ISO file:
-```nix
-{ pkgs }: with pkgs; with vmTools;
-extractFs { file = ./image.iso; }
-```
-
-## `vmTools.extractMTDfs` {#vm-tools-extractMTDfs}
-
-Like [](#vm-tools-extractFs), but it makes use of a [Memory Technology Device (MTD)](https://en.wikipedia.org/wiki/Memory_Technology_Device).
-
-## `vmTools.runInLinuxImage` {#vm-tools-runInLinuxImage}
-
-Like [](#vm-tools-runInLinuxVM), but instead of using `stdenv` from the Nix store, run the build using the tools provided by `/bin`, `/usr/bin`, etc. from the specified filesystem image, which typically is a filesystem containing a [FHS](https://en.wikipedia.org/wiki/Filesystem_Hierarchy_Standard)-based Linux distribution.
-
-## `vmTools.makeImageTestScript` {#vm-tools-makeImageTestScript}
-
-Generate a script that can be used to run an interactive session in the given image.
-
-### Examples {#vm-tools-makeImageTestScript-examples}
-
-Create a script for running a Fedora 27 VM:
-```nix
-{ pkgs }: with pkgs; with vmTools;
-makeImageTestScript diskImages.fedora27x86_64
-```
-
-Create a script for running an Ubuntu 20.04 VM:
-```nix
-{ pkgs }: with pkgs; with vmTools;
-makeImageTestScript diskImages.ubuntu2004x86_64
-```
-
-## `vmTools.diskImageFuns` {#vm-tools-diskImageFuns}
-
-A set of functions that build a predefined set of minimal Linux distributions images.
-
-### Images {#vm-tools-diskImageFuns-images}
-
-* Fedora
-  * `fedora26x86_64`
-  * `fedora27x86_64`
-* CentOS
-  * `centos6i386`
-  * `centos6x86_64`
-  * `centos7x86_64`
-* Ubuntu
-  * `ubuntu1404i386`
-  * `ubuntu1404x86_64`
-  * `ubuntu1604i386`
-  * `ubuntu1604x86_64`
-  * `ubuntu1804i386`
-  * `ubuntu1804x86_64`
-  * `ubuntu2004i386`
-  * `ubuntu2004x86_64`
-  * `ubuntu2204i386`
-  * `ubuntu2204x86_64`
-* Debian
-  * `debian10i386`
-  * `debian10x86_64`
-  * `debian11i386`
-  * `debian11x86_64`
-
-### Attributes {#vm-tools-diskImageFuns-attributes}
-
-* `size` (optional, defaults to `4096`). The size of the image, in MiB.
-* `extraPackages` (optional). A list names of additional packages from the distribution that should be included in the image.
-
-### Examples {#vm-tools-diskImageFuns-examples}
-
-8GiB image containing Firefox in addition to the default packages:
-```nix
-{ pkgs }: with pkgs; with vmTools;
-diskImageFuns.ubuntu2004x86_64 { extraPackages = [ "firefox" ]; size = 8192; }
-```
-
-## `vmTools.diskImageExtraFuns` {#vm-tools-diskImageExtraFuns}
-
-Shorthand for `vmTools.diskImageFuns.<attr> { extraPackages = ... }`.
-
-## `vmTools.diskImages` {#vm-tools-diskImages}
-
-Shorthand for `vmTools.diskImageFuns.<attr> { }`.

doc/build-helpers/testers.chapter.md

@@ -1,406 +0,0 @@
-# Testers {#chap-testers}
-
-This chapter describes several testing builders which are available in the `testers` namespace.
-
-## `hasPkgConfigModules` {#tester-hasPkgConfigModules}
-
-<!-- Old anchor name so links still work -->
-[]{#tester-hasPkgConfigModule}
-Checks whether a package exposes a given list of `pkg-config` modules.
-If the `moduleNames` argument is omitted, `hasPkgConfigModules` will use `meta.pkgConfigModules`.
-
-:::{.example #ex-haspkgconfigmodules-defaultvalues}
-
-# Check that `pkg-config` modules are exposed using default values
-
-```nix
-{
-  passthru.tests.pkg-config = testers.hasPkgConfigModules {
-    package = finalAttrs.finalPackage;
-  };
-
-  meta.pkgConfigModules = [ "libfoo" ];
-}
-```
-
-:::
-
-:::{.example #ex-haspkgconfigmodules-explicitmodules}
-
-# Check that `pkg-config` modules are exposed using explicit module names
-
-```nix
-{
-  passthru.tests.pkg-config = testers.hasPkgConfigModules {
-    package = finalAttrs.finalPackage;
-    moduleNames = [ "libfoo" ];
-  };
-}
-```
-
-:::
-
-## `lycheeLinkCheck` {#tester-lycheeLinkCheck}
-
-Check a packaged static site's links with the [`lychee` package](https://search.nixos.org/packages?show=lychee&type=packages&query=lychee).
-
-You may use Nix to reproducibly build static websites, such as for software documentation.
-Some packages will install documentation in their `out` or `doc` outputs, or maybe you have dedicated package where you've made your static site reproducible by running a generator, such as [Hugo](https://gohugo.io/) or [mdBook](https://rust-lang.github.io/mdBook/), in a derivation.
-
-If you have a static site that can be built with Nix, you can use `lycheeLinkCheck` to check that the hyperlinks in your site are correct, and do so as part of your Nix workflow and CI.
-
-:::{.example #ex-lycheelinkcheck}
-
-# Check hyperlinks in the `nix` documentation
-
-```nix
-testers.lycheeLinkCheck {
-  site = nix.doc + "/share/doc/nix/manual";
-}
-```
-
-:::
-
-### Return value {#tester-lycheeLinkCheck-return}
-
-This tester produces a package that does not produce useful outputs, but only succeeds if the hyperlinks in your site are correct. The build log will list the broken links.
-
-It has two modes:
-
-- Build the returned derivation; its build process will check that internal hyperlinks are correct. This runs in the sandbox, so it will not check external hyperlinks, but it is quick and reliable.
-
-- Invoke the `.online` attribute with [`nix run`](https://nixos.org/manual/nix/stable/command-ref/new-cli/nix3-run) ([experimental](https://nixos.org/manual/nix/stable/contributing/experimental-features#xp-feature-nix-command)). This runs outside the sandbox, and checks that both internal and external hyperlinks are correct.
-  Example:
-
-  ```shell
-  nix run nixpkgs#lychee.tests.ok.online
-  ```
-
-### Inputs {#tester-lycheeLinkCheck-inputs}
-
-`site` (path or derivation) {#tester-lycheeLinkCheck-param-site}
-
-: The path to the files to check.
-
-`remap` (attribe set, optional) {#tester-lycheeLinkCheck-param-remap}
-
-: An attribute set where the attribute names are regular expressions.
-  The values should be strings, derivations, or path values.
-
-  In the returned check's default configuration, external URLs are only checked when you run the `.online` attribute.
-
-  By adding remappings, you can check offline that URLs to external resources are correct, by providing a stand-in from the file system.
-
-  Before checking the existence of a URL, the regular expressions are matched and replaced by their corresponding values.
-
-  Example:
-
-  ```nix
-  {
-    "https://nix\\.dev/manual/nix/[a-z0-9.-]*" = "${nix.doc}/share/doc/nix/manual";
-    "https://nixos\\.org/manual/nix/(un)?stable" = "${emptyDirectory}/placeholder-to-disallow-old-nix-docs-urls";
-  }
-  ```
-
-  Store paths in the attribute values are automatically prefixed with `file://`, because lychee requires this for paths in the file system.
-  If this is a problem, or if you need to control the order in which replacements are performed, use `extraConfig.remap` instead.
-
-`extraConfig` (attribute set) {#tester-lycheeLinkCheck-param-extraConfig}
-
-: Extra configuration to pass to `lychee` in its [configuration file](https://github.com/lycheeverse/lychee/blob/master/lychee.example.toml).
-  It is automatically [translated](https://nixos.org/manual/nixos/stable/index.html#sec-settings-nix-representable) to TOML.
-
-  Example: `{ "include_verbatim" = true; }`
-
-`lychee` (derivation, optional) {#tester-lycheeLinkCheck-param-lychee}
-
-: The `lychee` package to use.
-
-## `shellcheck` {#tester-shellcheck}
-
-Runs files through `shellcheck`, a static analysis tool for shell scripts.
-
-:::{.example #ex-shellcheck}
-# Run `testers.shellcheck`
-
-A single script
-
-```nix
-testers.shellcheck {
-  name = "shellcheck";
-  src = ./script.sh;
-}
-```
-
-Multiple files
-
-```nix
-let
-  inherit (lib) fileset;
-in
-testers.shellcheck {
-  name = "shellcheck";
-  src = fileset.toSource {
-    root = ./.;
-    fileset = fileset.unions [
-      ./lib.sh
-      ./nixbsd-activate
-    ];
-  };
-}
-```
-
-:::
-
-### Inputs {#tester-shellcheck-inputs}
-
-[`src` (path or string)]{#tester-shellcheck-param-src}
-
-: The path to the shell script(s) to check.
-  This can be a single file or a directory containing shell files.
-  All files in `src` will be checked, so you may want to provide `fileset`-based source instead of a whole directory.
-
-### Return value {#tester-shellcheck-return}
-
-A derivation that runs `shellcheck` on the given script(s).
-The build will fail if `shellcheck` finds any issues.
-
-## `testVersion` {#tester-testVersion}
-
-Checks that the output from running a command contains the specified version string in it as a whole word.
-
-NOTE: In most cases, [`versionCheckHook`](#versioncheckhook) should be preferred, but this function is provided and documented here anyway. The motivation for adding either tests would be:
-
-- Catch dynamic linking errors and such and missing environment variables that should be added by wrapping.
-- Probable protection against accidentally building the wrong version, for example when using an "old" hash in a fixed-output derivation.
-
-By default, the command to be run will be inferred from the given `package` attribute:
-it will check `meta.mainProgram` first, and fall back to `pname` or `name`.
-The default argument to the command is `--version`, and the version to be checked will be inferred from the given `package` attribute as well.
-
-:::{.example #ex-testversion-hello}
-
-# Check a program version using all the default values
-
-This example will run the command `hello --version`, and then check that the version of the `hello` package is in the output of the command.
-
-```nix
-{
-  passthru.tests.version = testers.testVersion { package = hello; };
-}
-```
-
-:::
-
-:::{.example #ex-testversion-different-commandversion}
-
-# Check the program version using a specified command and expected version string
-
-This example will run the command `leetcode -V`, and then check that `leetcode 0.4.2` is in the output of the command as a whole word (separated by whitespaces).
-This means that an output like "leetcode 0.4.21" would fail the tests, and an output like "You're running leetcode 0.4.2" would pass the tests.
-
-A common usage of the `version` attribute is to specify `version = "v${version}"`.
-
-```nix
-{
-  version = "0.4.2";
-
-  passthru.tests.version = testers.testVersion {
-    package = leetcode-cli;
-    command = "leetcode -V";
-    version = "leetcode ${version}";
-  };
-}
-```
-
-:::
-
-## `testBuildFailure` {#tester-testBuildFailure}
-
-Make sure that a build does not succeed. This is useful for testing testers.
-
-This returns a derivation with an override on the builder, with the following effects:
-
- - Fail the build when the original builder succeeds
- - Move `$out` to `$out/result`, if it exists (assuming `out` is the default output)
- - Save the build log to `$out/testBuildFailure.log` (same)
-
-While `testBuildFailure` is designed to keep changes to the original builder's environment to a minimum, some small changes are inevitable:
-
- - The file `$TMPDIR/testBuildFailure.log` is present. It should not be deleted.
- - `stdout` and `stderr` are a pipe instead of a tty. This could be improved.
- - One or two extra processes are present in the sandbox during the original builder's execution.
- - The derivation and output hashes are different, but not unusual.
- - The derivation includes a dependency on `buildPackages.bash` and `expect-failure.sh`, which is built to include a transitive dependency on `buildPackages.coreutils` and possibly more.
-   These are not added to `PATH` or any other environment variable, so they should be hard to observe.
-
-:::{.example #ex-testBuildFailure-showingenvironmentchanges}
-
-# Check that a build fails, and verify the changes made during build
-
-```nix
-runCommand "example" {
-  failed = testers.testBuildFailure (runCommand "fail" {} ''
-    echo ok-ish >$out
-    echo failing though
-    exit 3
-  '');
-} ''
-  grep -F 'ok-ish' $failed/result
-  grep -F 'failing though' $failed/testBuildFailure.log
-  [[ 3 = $(cat $failed/testBuildFailure.exit) ]]
-  touch $out
-''
-```
-
-:::
-
-## `testEqualContents` {#tester-testEqualContents}
-
-Check that two paths have the same contents.
-
-:::{.example #ex-testEqualContents-toyexample}
-
-# Check that two paths have the same contents
-
-```nix
-testers.testEqualContents {
-  assertion = "sed -e performs replacement";
-  expected = writeText "expected" ''
-    foo baz baz
-  '';
-  actual = runCommand "actual" {
-    # not really necessary for a package that's in stdenv
-    nativeBuildInputs = [ gnused ];
-    base = writeText "base" ''
-      foo bar baz
-    '';
-  } ''
-    sed -e 's/bar/baz/g' $base >$out
-  '';
-}
-```
-
-:::
-
-## `testEqualDerivation` {#tester-testEqualDerivation}
-
-Checks that two packages produce the exact same build instructions.
-
-This can be used to make sure that a certain difference of configuration, such as the presence of an overlay does not cause a cache miss.
-
-When the derivations are equal, the return value is an empty file.
-Otherwise, the build log explains the difference via `nix-diff`.
-
-:::{.example #ex-testEqualDerivation-hello}
-
-# Check that two packages produce the same derivation
-
-```nix
-testers.testEqualDerivation
-  "The hello package must stay the same when enabling checks."
-  hello
-  (hello.overrideAttrs(o: { doCheck = true; }))
-```
-
-:::
-
-## `invalidateFetcherByDrvHash` {#tester-invalidateFetcherByDrvHash}
-
-Use the derivation hash to invalidate the output via name, for testing.
-
-Type: `(a@{ name, ... } -> Derivation) -> a -> Derivation`
-
-Normally, fixed output derivations can and should be cached by their output hash only, but for testing we want to re-fetch everytime the fetcher changes.
-
-Changes to the fetcher become apparent in the drvPath, which is a hash of how to fetch, rather than a fixed store path.
-By inserting this hash into the name, we can make sure to re-run the fetcher every time the fetcher changes.
-
-This relies on the assumption that Nix isn't clever enough to reuse its database of local store contents to optimize fetching.
-
-You might notice that the "salted" name derives from the normal invocation, not the final derivation.
-`invalidateFetcherByDrvHash` has to invoke the fetcher function twice:
-once to get a derivation hash, and again to produce the final fixed output derivation.
-
-:::{.example #ex-invalidateFetcherByDrvHash-nix}
-
-# Prevent nix from reusing the output of a fetcher
-
-```nix
-{
-  tests.fetchgit = testers.invalidateFetcherByDrvHash fetchgit {
-    name = "nix-source";
-    url = "https://github.com/NixOS/nix";
-    rev = "9d9dbe6ed05854e03811c361a3380e09183f4f4a";
-    hash = "sha256-7DszvbCNTjpzGRmpIVAWXk20P0/XTrWZ79KSOGLrUWY=";
-  };
-}
-```
-
-:::
-
-## `runNixOSTest` {#tester-runNixOSTest}
-
-A helper function that behaves exactly like the NixOS `runTest`, except it also assigns this Nixpkgs package set as the `pkgs` of the test and makes the `nixpkgs.*` options read-only.
-
-If your test is part of the Nixpkgs repository, or if you need a more general entrypoint, see ["Calling a test" in the NixOS manual](https://nixos.org/manual/nixos/stable/index.html#sec-calling-nixos-tests).
-
-:::{.example #ex-runNixOSTest-hello}
-
-# Run a NixOS test using `runNixOSTest`
-
-```nix
-pkgs.testers.runNixOSTest ({ lib, ... }: {
-  name = "hello";
-  nodes.machine = { pkgs, ... }: {
-    environment.systemPackages = [ pkgs.hello ];
-  };
-  testScript = ''
-    machine.succeed("hello")
-  '';
-})
-```
-
-:::
-
-## `nixosTest` {#tester-nixosTest}
-
-Run a NixOS VM network test using this evaluation of Nixpkgs.
-
-NOTE: This function is primarily for external use. NixOS itself uses `make-test-python.nix` directly. Packages defined in Nixpkgs [reuse NixOS tests via `nixosTests`, plural](#ssec-nixos-tests-linking).
-
-It is mostly equivalent to the function `import ./make-test-python.nix` from the [NixOS manual](https://nixos.org/nixos/manual/index.html#sec-nixos-tests), except that the current application of Nixpkgs (`pkgs`) will be used, instead of letting NixOS invoke Nixpkgs anew.
-
-If a test machine needs to set NixOS options under `nixpkgs`, it must set only the `nixpkgs.pkgs` option.
-
-### Parameter {#tester-nixosTest-parameter}
-
-A [NixOS VM test network](https://nixos.org/nixos/manual/index.html#sec-nixos-tests), or path to it. Example:
-
-```nix
-{
-  name = "my-test";
-  nodes = {
-    machine1 = { lib, pkgs, nodes, ... }: {
-      environment.systemPackages = [ pkgs.hello ];
-      services.foo.enable = true;
-    };
-    # machine2 = ...;
-  };
-  testScript = ''
-    start_all()
-    machine1.wait_for_unit("foo.service")
-    machine1.succeed("hello | foo-send")
-  '';
-}
-```
-
-### Result {#tester-nixosTest-result}
-
-A derivation that runs the VM test.
-
-Notable attributes:
-
- * `nodes`: the evaluated NixOS configurations. Useful for debugging and exploring the configuration.
-
- * `driverInteractive`: a script that launches an interactive Python session in the context of the `testScript`.

doc/build-helpers/trivial-build-helpers.chapter.md

@@ -1,710 +0,0 @@
-# Trivial build helpers {#chap-trivial-builders}
-
-Nixpkgs provides a variety of wrapper functions that help build commonly useful derivations.
-Like [`stdenv.mkDerivation`](#sec-using-stdenv), each of these build helpers creates a derivation, but the arguments passed are different (usually simpler) from those required by `stdenv.mkDerivation`.
-
-## `runCommand` {#trivial-builder-runCommand}
-
-`runCommand :: String -> AttrSet -> String -> Derivation`
-
-The result of `runCommand name drvAttrs buildCommand` is a derivation that is built by running the specified shell commands.
-
-By default `runCommand` runs in a stdenv with no compiler environment, whereas [`runCommandCC`](#trivial-builder-runCommandCC) uses the default stdenv, `pkgs.stdenv`.
-
-`name :: String`
-:   The name that Nix will append to the store path in the same way that `stdenv.mkDerivation` uses its `name` attribute.
-
-`drvAttr :: AttrSet`
-:   Attributes to pass to the underlying call to [`stdenv.mkDerivation`](#chap-stdenv).
-
-`buildCommand :: String`
-:   Shell commands to run in the derivation builder.
-
-    ::: {.note}
-    You have to create a file or directory `$out` for Nix to be able to run the builder successfully.
-    :::
-
-::: {.example #ex-runcommand-simple}
-# Invocation of `runCommand`
-
-```nix
-(import <nixpkgs> {}).runCommand "my-example" {} ''
-  echo My example command is running
-
-  mkdir $out
-
-  echo I can write data to the Nix store > $out/message
-
-  echo I can also run basic commands like:
-
-  echo ls
-  ls
-
-  echo whoami
-  whoami
-
-  echo date
-  date
-''
-```
-:::
-
-## `runCommandCC` {#trivial-builder-runCommandCC}
-
-This works just like `runCommand`. The only difference is that it also provides a C compiler in `buildCommand`'s environment. To minimize your dependencies, you should only use this if you are sure you will need a C compiler as part of running your command.
-
-## `runCommandLocal` {#trivial-builder-runCommandLocal}
-
-Variant of `runCommand` that forces the derivation to be built locally, it is not substituted. This is intended for very cheap commands (<1s execution time). It saves on the network round-trip and can speed up a build.
-
-::: {.note}
-This sets [`allowSubstitutes` to `false`](https://nixos.org/nix/manual/#adv-attr-allowSubstitutes), so only use `runCommandLocal` if you are certain the user will always have a builder for the `system` of the derivation. This should be true for most trivial use cases (e.g., just copying some files to a different location or adding symlinks) because there the `system` is usually the same as `builtins.currentSystem`.
-:::
-
-## Writing text files {#trivial-builder-text-writing}
-
-Nixpkgs provides the following functions for producing derivations which write text files or executable scripts into the Nix store.
-They are useful for creating files from Nix expression, and are all implemented as convenience wrappers around `writeTextFile`.
-
-Each of these functions will cause a derivation to be produced.
-When you coerce the result of each of these functions to a string with [string interpolation](https://nixos.org/manual/nix/stable/language/string-interpolation) or [`builtins.toString`](https://nixos.org/manual/nix/stable/language/builtins#builtins-toString), it will evaluate to the [store path](https://nixos.org/manual/nix/stable/store/store-path) of this derivation.
-
-:::: {.note}
-Some of these functions will put the resulting files within a directory inside the [derivation output](https://nixos.org/manual/nix/stable/language/derivations#attr-outputs).
-If you need to refer to the resulting files somewhere else in a Nix expression, append their path to the derivation's store path.
-
-For example, if the file destination is a directory:
-
-```nix
-{
-  my-file = writeTextFile {
-    name = "my-file";
-    text = ''
-      Contents of File
-    '';
-    destination = "/share/my-file";
-  };
-}
-```
-
-Remember to append "/share/my-file" to the resulting store path when using it elsewhere:
-
-```nix
-writeShellScript "evaluate-my-file.sh" ''
-  cat ${my-file}/share/my-file
-''
-```
-::::
-
-### `makeDesktopItem` {#trivial-builder-makeDesktopItem}
-
-Write an [XDG desktop file](https://specifications.freedesktop.org/desktop-entry-spec/1.4/) to the Nix store.
-
-This function is usually used to add desktop items to a package through the `copyDesktopItems` hook.
-
-`makeDesktopItem` adheres to version 1.4 of the specification.
-
-#### Inputs {#trivial-builder-makeDesktopItem-inputs}
-
-`makeDesktopItem` takes an attribute set that accepts most values from the [XDG specification](https://specifications.freedesktop.org/desktop-entry-spec/1.4/ar01s06.html).
-
-All recognised keys from the specification are supported with the exception of the "Hidden" field. The keys are converted into camelCase format, but correspond 1:1 to their equivalent in the specification: `genericName`, `noDisplay`, `comment`, `icon`, `onlyShowIn`, `notShowIn`, `dbusActivatable`, `tryExec`, `exec`, `path`, `terminal`, `mimeTypes`, `categories`, `implements`, `keywords`, `startupNotify`, `startupWMClass`, `url`, `prefersNonDefaultGPU`.
-
-The "Version" field is hardcoded to the version `makeDesktopItem` currently adheres to.
-
-The following fields are either required, are of a different type than in the specification, carry specific default values, or are additional fields supported by `makeDesktopItem`:
-
-`name` (String)
-
-: The name of the desktop file in the Nix store.
-
-`type` (String; _optional_)
-
-: Default value: `"Application"`
-
-`desktopName` (String)
-
-: Corresponds to the "Name" field of the specification.
-
-`actions` (List of Attribute set; _optional_)
-
-: A list of attribute sets {name, exec?, icon?}
-
-`extraConfig` (Attribute set; _optional_)
-
-: Additional key/value pairs to be added verbatim to the desktop file. Attributes need to be prefixed with 'X-'.
-
-#### Examples {#trivial-builder-makeDesktopItem-examples}
-
-::: {.example #ex-makeDesktopItem}
-# Usage 1 of `makeDesktopItem`
-
-Write a desktop file `/nix/store/<store path>/my-program.desktop` to the Nix store.
-
-```nix
-{makeDesktopItem}:
-makeDesktopItem {
-  name = "my-program";
-  desktopName = "My Program";
-  genericName = "Video Player";
-  noDisplay = false;
-  comment = "Cool video player";
-  icon = "/path/to/icon";
-  onlyShowIn = [ "KDE" ];
-  dbusActivatable = true;
-  tryExec = "my-program";
-  exec = "my-program --someflag";
-  path = "/some/working/path";
-  terminal = false;
-  actions.example = {
-    name = "New Window";
-    exec = "my-program --new-window";
-    icon = "/some/icon";
-  };
-  mimeTypes = [ "video/mp4" ];
-  categories = [ "Utility" ];
-  implements = [ "org.my-program" ];
-  keywords = [ "Video" "Player" ];
-  startupNotify = false;
-  startupWMClass = "MyProgram";
-  prefersNonDefaultGPU = false;
-  extraConfig.X-SomeExtension = "somevalue";
-}
-```
-
-:::
-
-::: {.example #ex2-makeDesktopItem}
-# Usage 2 of `makeDesktopItem`
-
-Override the `hello` package to add a desktop item.
-
-```nix
-{ copyDesktopItems
-, hello
-, makeDesktopItem }:
-
-hello.overrideAttrs {
-  nativeBuildInputs = [ copyDesktopItems ];
-
-  desktopItems = [(makeDesktopItem {
-    name = "hello";
-    desktopName = "Hello";
-    exec = "hello";
-  })];
-}
-```
-
-:::
-
-### `writeTextFile` {#trivial-builder-writeTextFile}
-
-Write a text file to the Nix store.
-
-`writeTextFile` takes an attribute set with the following possible attributes:
-
-`name` (String)
-
-: Corresponds to the name used in the Nix store path identifier.
-
-`text` (String)
-
-: The contents of the file.
-
-`executable` (Bool, _optional_)
-
-: Make this file have the executable bit set.
-
-  Default: `false`
-
-`destination` (String, _optional_)
-
-: A subpath under the derivation's output path into which to put the file.
-  Subdirectories are created automatically when the derivation is realised.
-
-  By default, the store path itself will be a file containing the text contents.
-
-  Default: `""`
-
-`checkPhase` (String, _optional_)
-
-: Commands to run after generating the file.
-
-  Default: `""`
-
-`meta` (Attribute set, _optional_)
-
-: Additional metadata for the derivation.
-
-  Default: `{}`
-
-`allowSubstitutes` (Bool, _optional_)
-
-: Whether to allow substituting from a binary cache.
-  Passed through to [`allowSubstitutes`](https://nixos.org/manual/nix/stable/language/advanced-attributes#adv-attr-allowSubstitutes) of the underlying call to `builtins.derivation`.
-
-  It defaults to `false`, as running the derivation's simple `builder` executable locally is assumed to be faster than network operations.
-  Set it to true if the `checkPhase` step is expensive.
-
-  Default: `false`
-
-`preferLocalBuild` (Bool, _optional_)
-
-: Whether to prefer building locally, even if faster [remote build machines](https://nixos.org/manual/nix/stable/command-ref/conf-file#conf-substituters) are available.
-
-  Passed through to [`preferLocalBuild`](https://nixos.org/manual/nix/stable/language/advanced-attributes#adv-attr-preferLocalBuild) of the underlying call to `builtins.derivation`.
-
-  It defaults to `true` for the same reason `allowSubstitutes` defaults to `false`.
-
-  Default: `true`
-
-`derivationArgs` (Attribute set, _optional_)
-
-: Extra arguments to pass to the underlying call to `stdenv.mkDerivation`.
-
-  Default: `{}`
-
-The resulting store path will include some variation of the name, and it will be a file unless `destination` is used, in which case it will be a directory.
-
-::: {.example #ex-writeTextFile}
-# Usage 1 of `writeTextFile`
-
-Write `my-file` to `/nix/store/<store path>/some/subpath/my-cool-script`, making it executable.
-Also run a check on the resulting file in a `checkPhase`, and supply values for the less-used options.
-
-```nix
-writeTextFile {
-  name = "my-cool-script";
-  text = ''
-    #!/bin/sh
-    echo "This is my cool script!"
-  '';
-  executable = true;
-  destination = "/some/subpath/my-cool-script";
-  checkPhase = ''
-    ${pkgs.shellcheck}/bin/shellcheck $out/some/subpath/my-cool-script
-  '';
-  meta = {
-    license = pkgs.lib.licenses.cc0;
-  };
-  allowSubstitutes = true;
-  preferLocalBuild = false;
-}
-```
-:::
-
-::: {.example #ex2-writeTextFile}
-# Usage 2 of `writeTextFile`
-
-Write the string `Contents of File` to `/nix/store/<store path>`.
-See also the [](#trivial-builder-writeText) helper function.
-
-```nix
-writeTextFile {
-  name = "my-file";
-  text = ''
-    Contents of File
-  '';
-}
-```
-:::
-
-::: {.example #ex3-writeTextFile}
-# Usage 3 of `writeTextFile`
-
-Write an executable script `my-script` to `/nix/store/<store path>/bin/my-script`.
-See also the [](#trivial-builder-writeScriptBin) helper function.
-
-```nix
-writeTextFile {
-  name = "my-script";
-  text = ''
-    echo "hi"
-  '';
-  executable = true;
-  destination = "/bin/my-script";
-}
-```
-:::
-
-### `writeText` {#trivial-builder-writeText}
-
-Write a text file to the Nix store
-
-`writeText` takes the following arguments:
-a string.
-
-`name` (String)
-
-: The name used in the Nix store path.
-
-`text` (String)
-
-: The contents of the file.
-
-The store path will include the name, and it will be a file.
-
-::: {.example #ex-writeText}
-# Usage of `writeText`
-
-Write the string `Contents of File` to `/nix/store/<store path>`:
-
-```nix
-writeText "my-file"
-  ''
-  Contents of File
-  ''
-```
-:::
-
-This is equivalent to:
-
-```nix
-writeTextFile {
-  name = "my-file";
-  text = ''
-    Contents of File
-  '';
-}
-```
-
-### `writeTextDir` {#trivial-builder-writeTextDir}
-
-Write a text file within a subdirectory of the Nix store.
-
-`writeTextDir` takes the following arguments:
-
-`path` (String)
-
-: The destination within the Nix store path under which to create the file.
-
-`text` (String)
-
-: The contents of the file.
-
-The store path will be a directory.
-
-::: {.example #ex-writeTextDir}
-# Usage of `writeTextDir`
-
-Write the string `Contents of File` to `/nix/store/<store path>/share/my-file`:
-
-```nix
-writeTextDir "share/my-file"
-  ''
-  Contents of File
-  ''
-```
-:::
-
-This is equivalent to:
-
-```nix
-writeTextFile {
-  name = "my-file";
-  text = ''
-    Contents of File
-  '';
-  destination = "share/my-file";
-}
-```
-
-### `writeScript` {#trivial-builder-writeScript}
-
-Write an executable script file to the Nix store.
-
-`writeScript` takes the following arguments:
-
-`name` (String)
-
-: The name used in the Nix store path.
-
-`text` (String)
-
-: The contents of the file.
-
-The created file is marked as executable.
-The store path will include the name, and it will be a file.
-
-::: {.example #ex-writeScript}
-# Usage of `writeScript`
-
-Write the string `Contents of File` to `/nix/store/<store path>` and make the file executable.
-
-```nix
-writeScript "my-file"
-  ''
-  Contents of File
-  ''
-```
-:::
-
-This is equivalent to:
-
-```nix
-writeTextFile {
-  name = "my-file";
-  text = ''
-    Contents of File
-  '';
-  executable = true;
-}
-```
-
-### `writeScriptBin` {#trivial-builder-writeScriptBin}
-
-Write a script within a `bin` subdirectory of a directory in the Nix store.
-This is for consistency with the convention of software packages placing executables under `bin`.
-
-`writeScriptBin` takes the following arguments:
-
-`name` (String)
-
-: The name used in the Nix store path and within the file created under the store path.
-
-`text` (String)
-
-: The contents of the file.
-
-The created file is marked as executable.
-The file's contents will be put into `/nix/store/<store path>/bin/<name>`.
-The store path will include the name, and it will be a directory.
-
-::: {.example #ex-writeScriptBin}
-# Usage of `writeScriptBin`
-
-```nix
-writeScriptBin "my-script"
-  ''
-  echo "hi"
-  ''
-```
-:::
-
-This is equivalent to:
-
-```nix
-writeTextFile {
-  name = "my-script";
-  text = ''
-    echo "hi"
-  '';
-  executable = true;
-  destination = "bin/my-script";
-}
-```
-
-### `writeShellScript` {#trivial-builder-writeShellScript}
-
-Write a Bash script to the store.
-
-`writeShellScript` takes the following arguments:
-
-`name` (String)
-
-: The name used in the Nix store path.
-
-`text` (String)
-
-: The contents of the file.
-
-The created file is marked as executable.
-The store path will include the name, and it will be a file.
-
-This function is almost exactly like [](#trivial-builder-writeScript), except that it prepends to the file a [shebang](https://en.wikipedia.org/wiki/Shebang_%28Unix%29) line that points to the version of Bash used in Nixpkgs.
-<!-- this cannot be changed in practice, so there is no point pretending it's somehow generic -->
-
-::: {.example #ex-writeShellScript}
-# Usage of `writeShellScript`
-
-```nix
-writeShellScript "my-script"
-  ''
-  echo "hi"
-  ''
-```
-:::
-
-This is equivalent to:
-
-```nix
-writeTextFile {
-  name = "my-script";
-  text = ''
-    #! ${pkgs.runtimeShell}
-    echo "hi"
-  '';
-  executable = true;
-}
-```
-
-### `writeShellScriptBin` {#trivial-builder-writeShellScriptBin}
-
-Write a Bash script to a "bin" subdirectory of a directory in the Nix store.
-
-`writeShellScriptBin` takes the following arguments:
-
-`name` (String)
-
-: The name used in the Nix store path and within the file generated under the store path.
-
-`text` (String)
-
-: The contents of the file.
-
-The file's contents will be put into `/nix/store/<store path>/bin/<name>`.
-The store path will include the the name, and it will be a directory.
-
-This function is a combination of [](#trivial-builder-writeShellScript) and [](#trivial-builder-writeScriptBin).
-
-::: {.example #ex-writeShellScriptBin}
-# Usage of `writeShellScriptBin`
-
-```nix
-writeShellScriptBin "my-script"
-  ''
-  echo "hi"
-  ''
-```
-:::
-
-This is equivalent to:
-
-```nix
-writeTextFile {
-  name = "my-script";
-  text = ''
-    #! ${pkgs.runtimeShell}
-    echo "hi"
-  '';
-  executable = true;
-  destination = "bin/my-script";
-}
-```
-
-## `concatTextFile`, `concatText`, `concatScript` {#trivial-builder-concatText}
-
-These functions concatenate `files` to the Nix store in a single file. This is useful for configuration files structured in lines of text. `concatTextFile` takes an attribute set and expects two arguments, `name` and `files`. `name` corresponds to the name used in the Nix store path. `files` will be the files to be concatenated. You can also set `executable` to true to make this file have the executable bit set.
-`concatText` and`concatScript` are simple wrappers over `concatTextFile`.
-
-Here are a few examples:
-```nix
-
-# Writes my-file to /nix/store/<store path>
-concatTextFile {
-  name = "my-file";
-  files = [ drv1 "${drv2}/path/to/file" ];
-}
-# See also the `concatText` helper function below.
-
-# Writes executable my-file to /nix/store/<store path>/bin/my-file
-concatTextFile {
-  name = "my-file";
-  files = [ drv1 "${drv2}/path/to/file" ];
-  executable = true;
-  destination = "/bin/my-file";
-}
-# Writes contents of files to /nix/store/<store path>
-concatText "my-file" [ file1 file2 ]
-
-# Writes contents of files to /nix/store/<store path>
-concatScript "my-file" [ file1 file2 ]
-```
-
-## `writeShellApplication` {#trivial-builder-writeShellApplication}
-
-`writeShellApplication` is similar to `writeShellScriptBin` and `writeScriptBin` but supports runtime dependencies with `runtimeInputs`.
-Writes an executable shell script to `/nix/store/<store path>/bin/<name>` and checks its syntax with [`shellcheck`](https://github.com/koalaman/shellcheck) and the `bash`'s `-n` option.
-Some basic Bash options are set by default (`errexit`, `nounset`, and `pipefail`), but can be overridden with `bashOptions`.
-
-Extra arguments may be passed to `stdenv.mkDerivation` by setting `derivationArgs`; note that variables set in this manner will be set when the shell script is _built,_ not when it's run.
-Runtime environment variables can be set with the `runtimeEnv` argument.
-
-For example, the following shell application can refer to `curl` directly, rather than needing to write `${curl}/bin/curl`:
-
-```nix
-writeShellApplication {
-  name = "show-nixos-org";
-
-  runtimeInputs = [ curl w3m ];
-
-  text = ''
-    curl -s 'https://nixos.org' | w3m -dump -T text/html
-  '';
-}
-```
-
-## `symlinkJoin` {#trivial-builder-symlinkJoin}
-
-This can be used to put many derivations into the same directory structure. It works by creating a new derivation and adding symlinks to each of the paths listed. It expects two arguments, `name`, and `paths`. `name` is the name used in the Nix store path for the created derivation. `paths` is a list of paths that will be symlinked. These paths can be to Nix store derivations or any other subdirectory contained within.
-Here is an example:
-```nix
-# adds symlinks of hello and stack to current build and prints "links added"
-symlinkJoin { name = "myexample"; paths = [ pkgs.hello pkgs.stack ]; postBuild = "echo links added"; }
-```
-This creates a derivation with a directory structure like the following:
-```
-/nix/store/sglsr5g079a5235hy29da3mq3hv8sjmm-myexample
-|-- bin
-|   |-- hello -> /nix/store/qy93dp4a3rqyn2mz63fbxjg228hffwyw-hello-2.10/bin/hello
-|   `-- stack -> /nix/store/6lzdpxshx78281vy056lbk553ijsdr44-stack-2.1.3.1/bin/stack
-`-- share
-    |-- bash-completion
-    |   `-- completions
-    |       `-- stack -> /nix/store/6lzdpxshx78281vy056lbk553ijsdr44-stack-2.1.3.1/share/bash-completion/completions/stack
-    |-- fish
-    |   `-- vendor_completions.d
-    |       `-- stack.fish -> /nix/store/6lzdpxshx78281vy056lbk553ijsdr44-stack-2.1.3.1/share/fish/vendor_completions.d/stack.fish
-...
-```
-
-## `writeReferencesToFile` {#trivial-builder-writeReferencesToFile}
-
-Deprecated. Use [`writeClosure`](#trivial-builder-writeClosure) instead.
-
-## `writeClosure` {#trivial-builder-writeClosure}
-
-Given a list of [store paths](https://nixos.org/manual/nix/stable/glossary#gloss-store-path) (or string-like expressions coercible to store paths), write their collective [closure](https://nixos.org/manual/nix/stable/glossary#gloss-closure) to a text file.
-
-The result is equivalent to the output of `nix-store -q --requisites`.
-
-For example,
-
-```nix
-writeClosure [ (writeScriptBin "hi" ''${hello}/bin/hello'') ]
-```
-
-produces an output path `/nix/store/<hash>-runtime-deps` containing
-
-```
-/nix/store/<hash>-hello-2.10
-/nix/store/<hash>-hi
-/nix/store/<hash>-libidn2-2.3.0
-/nix/store/<hash>-libunistring-0.9.10
-/nix/store/<hash>-glibc-2.32-40
-```
-
-You can see that this includes `hi`, the original input path,
-`hello`, which is a direct reference, but also
-the other paths that are indirectly required to run `hello`.
-
-## `writeDirectReferencesToFile` {#trivial-builder-writeDirectReferencesToFile}
-
-Writes the set of references to the output file, that is, their immediate dependencies.
-
-This produces the equivalent of `nix-store -q --references`.
-
-For example,
-
-```nix
-writeDirectReferencesToFile (writeScriptBin "hi" ''${hello}/bin/hello'')
-```
-
-produces an output path `/nix/store/<hash>-runtime-references` containing
-
-```
-/nix/store/<hash>-hello-2.10
-```
-
-but none of `hello`'s dependencies because those are not referenced directly
-by `hi`'s output.

doc/builders/fetchers.xml

@@ -0,0 +1,150 @@
+<chapter xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xmlns:xi="http://www.w3.org/2001/XInclude"
+         xml:id="chap-pkgs-fetchers">
+ <title>Fetchers</title>
+ <para>
+  When using Nix, you will frequently need to download source code and other files from the internet. Nixpkgs comes with a few helper functions that allow you to fetch fixed-output derivations in a structured way.
+ </para>
+ <para>
+  The two fetcher primitives are <function>fetchurl</function> and <function>fetchzip</function>. Both of these have two required arguments, a URL and a hash. The hash is typically <literal>sha256</literal>, although many more hash algorithms are supported. Nixpkgs contributors are currently recommended to use <literal>sha256</literal>. This hash will be used by Nix to identify your source. A typical usage of fetchurl is provided below.
+ </para>
+<programlisting><![CDATA[
+{ stdenv, fetchurl }:
+
+stdenv.mkDerivation {
+  name = "hello";
+  src = fetchurl {
+    url = "http://www.example.org/hello.tar.gz";
+    sha256 = "1111111111111111111111111111111111111111111111111111";
+  };
+}
+]]></programlisting>
+ <para>
+  The main difference between <function>fetchurl</function> and <function>fetchzip</function> is in how they store the contents. <function>fetchurl</function> will store the unaltered contents of the URL within the Nix store. <function>fetchzip</function> on the other hand will decompress the archive for you, making files and directories directly accessible in the future. <function>fetchzip</function> can only be used with archives. Despite the name, <function>fetchzip</function> is not limited to .zip files and can also be used with any tarball.
+ </para>
+ <para>
+  <function>fetchpatch</function> works very similarly to <function>fetchurl</function> with the same arguments expected. It expects patch files as a source and and performs normalization on them before computing the checksum. For example it will remove comments or other unstable parts that are sometimes added by version control systems and can change over time.
+ </para>
+ <para>
+  Other fetcher functions allow you to add source code directly from a VCS such as subversion or git. These are mostly straightforward names based on the name of the command used with the VCS system. Because they give you a working repository, they act most like <function>fetchzip</function>.
+ </para>
+ <variablelist>
+  <varlistentry>
+   <term>
+    <literal>fetchsvn</literal>
+   </term>
+   <listitem>
+    <para>
+     Used with Subversion. Expects <literal>url</literal> to a Subversion directory, <literal>rev</literal>, and <literal>sha256</literal>.
+    </para>
+   </listitem>
+  </varlistentry>
+  <varlistentry>
+   <term>
+    <literal>fetchgit</literal>
+   </term>
+   <listitem>
+    <para>
+     Used with Git. Expects <literal>url</literal> to a Git repo, <literal>rev</literal>, and <literal>sha256</literal>. <literal>rev</literal> in this case can be full the git commit id (SHA1 hash) or a tag name like <literal>refs/tags/v1.0</literal>.
+    </para>
+   </listitem>
+  </varlistentry>
+  <varlistentry>
+   <term>
+    <literal>fetchfossil</literal>
+   </term>
+   <listitem>
+    <para>
+     Used with Fossil. Expects <literal>url</literal> to a Fossil archive, <literal>rev</literal>, and <literal>sha256</literal>.
+    </para>
+   </listitem>
+  </varlistentry>
+  <varlistentry>
+   <term>
+    <literal>fetchcvs</literal>
+   </term>
+   <listitem>
+    <para>
+     Used with CVS. Expects <literal>cvsRoot</literal>, <literal>tag</literal>, and <literal>sha256</literal>.
+    </para>
+   </listitem>
+  </varlistentry>
+  <varlistentry>
+   <term>
+    <literal>fetchhg</literal>
+   </term>
+   <listitem>
+    <para>
+     Used with Mercurial. Expects <literal>url</literal>, <literal>rev</literal>, and <literal>sha256</literal>.
+    </para>
+   </listitem>
+  </varlistentry>
+ </variablelist>
+ <para>
+  A number of fetcher functions wrap part of <function>fetchurl</function> and <function>fetchzip</function>. They are mainly convenience functions intended for commonly used destinations of source code in Nixpkgs. These wrapper fetchers are listed below.
+ </para>
+ <variablelist>
+  <varlistentry>
+   <term>
+    <literal>fetchFromGitHub</literal>
+   </term>
+   <listitem>
+    <para>
+     <function>fetchFromGitHub</function> expects four arguments. <literal>owner</literal> is a string corresponding to the GitHub user or organization that controls this repository. <literal>repo</literal> corresponds to the name of the software repository. These are located at the top of every GitHub HTML page as <literal>owner</literal>/<literal>repo</literal>. <literal>rev</literal> corresponds to the Git commit hash or tag (e.g <literal>v1.0</literal>) that will be downloaded from Git. Finally, <literal>sha256</literal> corresponds to the hash of the extracted directory. Again, other hash algorithms are also available but <literal>sha256</literal> is currently preferred.
+    </para>
+   </listitem>
+  </varlistentry>
+  <varlistentry>
+   <term>
+    <literal>fetchFromGitLab</literal>
+   </term>
+   <listitem>
+    <para>
+     This is used with GitLab repositories. The arguments expected are very similar to fetchFromGitHub above.
+    </para>
+   </listitem>
+  </varlistentry>
+  <varlistentry>
+   <term>
+    <literal>fetchFromGitiles</literal>
+   </term>
+   <listitem>
+    <para>
+     This is used with Gitiles repositories. The arguments expected
+     are similar to fetchgit.
+    </para>
+   </listitem>
+  </varlistentry>
+  <varlistentry>
+   <term>
+    <literal>fetchFromBitbucket</literal>
+   </term>
+   <listitem>
+    <para>
+     This is used with BitBucket repositories. The arguments expected are very similar to fetchFromGitHub above.
+    </para>
+   </listitem>
+  </varlistentry>
+  <varlistentry>
+   <term>
+    <literal>fetchFromSavannah</literal>
+   </term>
+   <listitem>
+    <para>
+     This is used with Savannah repositories. The arguments expected are very similar to fetchFromGitHub above.
+    </para>
+   </listitem>
+  </varlistentry>
+  <varlistentry>
+   <term>
+    <literal>fetchFromRepoOrCz</literal>
+   </term>
+   <listitem>
+    <para>
+     This is used with repo.or.cz repositories. The arguments expected are very similar to fetchFromGitHub above.
+    </para>
+   </listitem>
+  </varlistentry>
+ </variablelist>
+</chapter>

doc/builders/images.xml

@@ -0,0 +1,12 @@
+<chapter xmlns="http://docbook.org/ns/docbook"
+         xmlns:xi="http://www.w3.org/2001/XInclude"
+         xml:id="chap-images">
+ <title>Images</title>
+ <para>
+  This chapter describes tools for creating various types of images.
+ </para>
+ <xi:include href="images/appimagetools.xml" />
+ <xi:include href="images/dockertools.xml" />
+ <xi:include href="images/ocitools.xml" />
+ <xi:include href="images/snaptools.xml" />
+</chapter>

doc/builders/images/appimagetools.xml

@@ -0,0 +1,102 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xmlns:xi="http://www.w3.org/2001/XInclude"
+         xml:id="sec-pkgs-appimageTools">
+ <title>pkgs.appimageTools</title>
+
+ <para>
+  <varname>pkgs.appimageTools</varname> is a set of functions for extracting and wrapping <link xlink:href="https://appimage.org/">AppImage</link> files. They are meant to be used if traditional packaging from source is infeasible, or it would take too long. To quickly run an AppImage file, <literal>pkgs.appimage-run</literal> can be used as well.
+ </para>
+
+ <warning>
+  <para>
+   The <varname>appimageTools</varname> API is unstable and may be subject to backwards-incompatible changes in the future.
+  </para>
+ </warning>
+
+ <section xml:id="ssec-pkgs-appimageTools-formats">
+  <title>AppImage formats</title>
+
+  <para>
+   There are different formats for AppImages, see <link xlink:href="https://github.com/AppImage/AppImageSpec/blob/74ad9ca2f94bf864a4a0dac1f369dd4f00bd1c28/draft.md#image-format">the specification</link> for details.
+  </para>
+
+  <itemizedlist>
+   <listitem>
+    <para>
+     Type 1 images are ISO 9660 files that are also ELF executables.
+    </para>
+   </listitem>
+   <listitem>
+    <para>
+     Type 2 images are ELF executables with an appended filesystem.
+    </para>
+   </listitem>
+  </itemizedlist>
+
+  <para>
+   They can be told apart with <command>file -k</command>:
+  </para>
+
+<screen>
+<prompt>$ </prompt>file -k type1.AppImage
+type1.AppImage: ELF 64-bit LSB executable, x86-64, version 1 (SYSV) ISO 9660 CD-ROM filesystem data 'AppImage' (Lepton 3.x), scale 0-0,
+spot sensor temperature 0.000000, unit celsius, color scheme 0, calibration: offset 0.000000, slope 0.000000, dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.18, BuildID[sha1]=d629f6099d2344ad82818172add1d38c5e11bc6d, stripped\012- data
+
+<prompt>$ </prompt>file -k type2.AppImage
+type2.AppImage: ELF 64-bit LSB executable, x86-64, version 1 (SYSV) (Lepton 3.x), scale 232-60668, spot sensor temperature -4.187500, color scheme 15, show scale bar, calibration: offset -0.000000, slope 0.000000 (Lepton 2.x), scale 4111-45000, spot sensor temperature 412442.250000, color scheme 3, minimum point enabled, calibration: offset -75402534979642766821519867692934234112.000000, slope 5815371847733706829839455140374904832.000000, dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.18, BuildID[sha1]=79dcc4e55a61c293c5e19edbd8d65b202842579f, stripped\012- data
+</screen>
+
+  <para>
+   Note how the type 1 AppImage is described as an <literal>ISO 9660 CD-ROM filesystem</literal>, and the type 2 AppImage is not.
+  </para>
+ </section>
+
+ <section xml:id="ssec-pkgs-appimageTools-wrapping">
+  <title>Wrapping</title>
+
+  <para>
+   Depending on the type of AppImage you're wrapping, you'll have to use <varname>wrapType1</varname> or <varname>wrapType2</varname>.
+  </para>
+
+<programlisting>
+appimageTools.wrapType2 { # or wrapType1
+  name = "patchwork"; <co xml:id='ex-appimageTools-wrapping-1' />
+  src = fetchurl { <co xml:id='ex-appimageTools-wrapping-2' />
+    url = https://github.com/ssbc/patchwork/releases/download/v3.11.4/Patchwork-3.11.4-linux-x86_64.AppImage;
+    sha256 =  "1blsprpkvm0ws9b96gb36f0rbf8f5jgmw4x6dsb1kswr4ysf591s";
+  };
+  extraPkgs = pkgs: with pkgs; [ ]; <co xml:id='ex-appimageTools-wrapping-3' />
+}</programlisting>
+
+  <calloutlist>
+   <callout arearefs='ex-appimageTools-wrapping-1'>
+    <para>
+     <varname>name</varname> specifies the name of the resulting image.
+    </para>
+   </callout>
+   <callout arearefs='ex-appimageTools-wrapping-2'>
+    <para>
+     <varname>src</varname> specifies the AppImage file to extract.
+    </para>
+   </callout>
+   <callout arearefs='ex-appimageTools-wrapping-3'>
+    <para>
+     <varname>extraPkgs</varname> allows you to pass a function to include additional packages inside the FHS environment your AppImage is going to run in. There are a few ways to learn which dependencies an application needs:
+     <itemizedlist>
+      <listitem>
+       <para>
+        Looking through the extracted AppImage files, reading its scripts and running <command>patchelf</command> and <command>ldd</command> on its executables. This can also be done in <command>appimage-run</command>, by setting <command>APPIMAGE_DEBUG_EXEC=bash</command>.
+       </para>
+      </listitem>
+      <listitem>
+       <para>
+        Running <command>strace -vfefile</command> on the wrapped executable, looking for libraries that can't be found.
+       </para>
+      </listitem>
+     </itemizedlist>
+    </para>
+   </callout>
+  </calloutlist>
+ </section>
+</section>

doc/builders/images/dockertools.xml

@@ -0,0 +1,478 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xmlns:xi="http://www.w3.org/2001/XInclude"
+         xml:id="sec-pkgs-dockerTools">
+ <title>pkgs.dockerTools</title>
+
+ <para>
+  <varname>pkgs.dockerTools</varname> is a set of functions for creating and manipulating Docker images according to the <link xlink:href="https://github.com/moby/moby/blob/master/image/spec/v1.2.md#docker-image-specification-v120"> Docker Image Specification v1.2.0 </link>. Docker itself is not used to perform any of the operations done by these functions.
+ </para>
+
+ <section xml:id="ssec-pkgs-dockerTools-buildImage">
+  <title>buildImage</title>
+
+  <para>
+   This function is analogous to the <command>docker build</command> command, in that it can be used to build a Docker-compatible repository tarball containing a single image with one or multiple layers. As such, the result is suitable for being loaded in Docker with <command>docker load</command>.
+  </para>
+
+  <para>
+   The parameters of <varname>buildImage</varname> with relative example values are described below:
+  </para>
+
+  <example xml:id='ex-dockerTools-buildImage'>
+   <title>Docker build</title>
+<programlisting>
+buildImage {
+  name = "redis"; <co xml:id='ex-dockerTools-buildImage-1' />
+  tag = "latest"; <co xml:id='ex-dockerTools-buildImage-2' />
+
+  fromImage = someBaseImage; <co xml:id='ex-dockerTools-buildImage-3' />
+  fromImageName = null; <co xml:id='ex-dockerTools-buildImage-4' />
+  fromImageTag = "latest"; <co xml:id='ex-dockerTools-buildImage-5' />
+
+  contents = pkgs.redis; <co xml:id='ex-dockerTools-buildImage-6' />
+  runAsRoot = '' <co xml:id='ex-dockerTools-buildImage-runAsRoot' />
+    #!${pkgs.runtimeShell}
+    mkdir -p /data
+  '';
+
+  config = { <co xml:id='ex-dockerTools-buildImage-8' />
+    Cmd = [ "/bin/redis-server" ];
+    WorkingDir = "/data";
+    Volumes = {
+      "/data" = {};
+    };
+  };
+}
+</programlisting>
+  </example>
+
+  <para>
+   The above example will build a Docker image <literal>redis/latest</literal> from the given base image. Loading and running this image in Docker results in <literal>redis-server</literal> being started automatically.
+  </para>
+
+  <calloutlist>
+   <callout arearefs='ex-dockerTools-buildImage-1'>
+    <para>
+     <varname>name</varname> specifies the name of the resulting image. This is the only required argument for <varname>buildImage</varname>.
+    </para>
+   </callout>
+   <callout arearefs='ex-dockerTools-buildImage-2'>
+    <para>
+     <varname>tag</varname> specifies the tag of the resulting image. By default it's <literal>null</literal>, which indicates that the nix output hash will be used as tag.
+    </para>
+   </callout>
+   <callout arearefs='ex-dockerTools-buildImage-3'>
+    <para>
+     <varname>fromImage</varname> is the repository tarball containing the base image. It must be a valid Docker image, such as exported by <command>docker save</command>. By default it's <literal>null</literal>, which can be seen as equivalent to <literal>FROM scratch</literal> of a <filename>Dockerfile</filename>.
+    </para>
+   </callout>
+   <callout arearefs='ex-dockerTools-buildImage-4'>
+    <para>
+     <varname>fromImageName</varname> can be used to further specify the base image within the repository, in case it contains multiple images. By default it's <literal>null</literal>, in which case <varname>buildImage</varname> will peek the first image available in the repository.
+    </para>
+   </callout>
+   <callout arearefs='ex-dockerTools-buildImage-5'>
+    <para>
+     <varname>fromImageTag</varname> can be used to further specify the tag of the base image within the repository, in case an image contains multiple tags. By default it's <literal>null</literal>, in which case <varname>buildImage</varname> will peek the first tag available for the base image.
+    </para>
+   </callout>
+   <callout arearefs='ex-dockerTools-buildImage-6'>
+    <para>
+     <varname>contents</varname> is a derivation that will be copied in the new layer of the resulting image. This can be similarly seen as <command>ADD contents/ /</command> in a <filename>Dockerfile</filename>. By default it's <literal>null</literal>.
+    </para>
+   </callout>
+   <callout arearefs='ex-dockerTools-buildImage-runAsRoot'>
+    <para>
+     <varname>runAsRoot</varname> is a bash script that will run as root in an environment that overlays the existing layers of the base image with the new resulting layer, including the previously copied <varname>contents</varname> derivation. This can be similarly seen as <command>RUN ...</command> in a <filename>Dockerfile</filename>.
+     <note>
+      <para>
+       Using this parameter requires the <literal>kvm</literal> device to be available.
+      </para>
+     </note>
+    </para>
+   </callout>
+   <callout arearefs='ex-dockerTools-buildImage-8'>
+    <para>
+     <varname>config</varname> is used to specify the configuration of the containers that will be started off the built image in Docker. The available options are listed in the <link xlink:href="https://github.com/moby/moby/blob/master/image/spec/v1.2.md#image-json-field-descriptions"> Docker Image Specification v1.2.0 </link>.
+    </para>
+   </callout>
+  </calloutlist>
+
+  <para>
+   After the new layer has been created, its closure (to which <varname>contents</varname>, <varname>config</varname> and <varname>runAsRoot</varname> contribute) will be copied in the layer itself. Only new dependencies that are not already in the existing layers will be copied.
+  </para>
+
+  <para>
+   At the end of the process, only one new single layer will be produced and added to the resulting image.
+  </para>
+
+  <para>
+   The resulting repository will only list the single image <varname>image/tag</varname>. In the case of <xref linkend='ex-dockerTools-buildImage'/> it would be <varname>redis/latest</varname>.
+  </para>
+
+  <para>
+   It is possible to inspect the arguments with which an image was built using its <varname>buildArgs</varname> attribute.
+  </para>
+
+  <note>
+   <para>
+    If you see errors similar to <literal>getProtocolByName: does not exist (no such protocol name: tcp)</literal> you may need to add <literal>pkgs.iana-etc</literal> to <varname>contents</varname>.
+   </para>
+  </note>
+
+  <note>
+   <para>
+    If you see errors similar to <literal>Error_Protocol ("certificate has unknown CA",True,UnknownCa)</literal> you may need to add <literal>pkgs.cacert</literal> to <varname>contents</varname>.
+   </para>
+  </note>
+
+  <example xml:id="example-pkgs-dockerTools-buildImage-creation-date">
+   <title>Impurely Defining a Docker Layer's Creation Date</title>
+   <para>
+    By default <function>buildImage</function> will use a static date of one second past the UNIX Epoch. This allows <function>buildImage</function> to produce binary reproducible images. When listing images with <command>docker images</command>, the newly created images will be listed like this:
+   </para>
+<screen><![CDATA[
+$ docker images
+REPOSITORY   TAG      IMAGE ID       CREATED        SIZE
+hello        latest   08c791c7846e   48 years ago   25.2MB
+]]></screen>
+   <para>
+    You can break binary reproducibility but have a sorted, meaningful <literal>CREATED</literal> column by setting <literal>created</literal> to <literal>now</literal>.
+   </para>
+<programlisting><![CDATA[
+pkgs.dockerTools.buildImage {
+  name = "hello";
+  tag = "latest";
+  created = "now";
+  contents = pkgs.hello;
+
+  config.Cmd = [ "/bin/hello" ];
+}
+]]></programlisting>
+   <para>
+    and now the Docker CLI will display a reasonable date and sort the images as expected:
+<screen><![CDATA[
+$ docker images
+REPOSITORY   TAG      IMAGE ID       CREATED              SIZE
+hello        latest   de2bf4786de6   About a minute ago   25.2MB
+]]></screen>
+    however, the produced images will not be binary reproducible.
+   </para>
+  </example>
+ </section>
+
+ <section xml:id="ssec-pkgs-dockerTools-buildLayeredImage">
+  <title>buildLayeredImage</title>
+
+  <para>
+   Create a Docker image with many of the store paths being on their own layer to improve sharing between images.
+  </para>
+
+  <variablelist>
+   <varlistentry>
+    <term>
+     <varname>name</varname>
+    </term>
+    <listitem>
+     <para>
+      The name of the resulting image.
+     </para>
+    </listitem>
+   </varlistentry>
+   <varlistentry>
+    <term>
+     <varname>tag</varname> <emphasis>optional</emphasis>
+    </term>
+    <listitem>
+     <para>
+      Tag of the generated image.
+     </para>
+     <para>
+      <emphasis>Default:</emphasis> the output path's hash
+     </para>
+    </listitem>
+   </varlistentry>
+   <varlistentry>
+    <term>
+     <varname>contents</varname> <emphasis>optional</emphasis>
+    </term>
+    <listitem>
+     <para>
+      Top level paths in the container. Either a single derivation, or a list of derivations.
+     </para>
+     <para>
+      <emphasis>Default:</emphasis> <literal>[]</literal>
+     </para>
+    </listitem>
+   </varlistentry>
+   <varlistentry>
+    <term>
+     <varname>config</varname> <emphasis>optional</emphasis>
+    </term>
+    <listitem>
+     <para>
+      Run-time configuration of the container. A full list of the options are available at in the <link xlink:href="https://github.com/moby/moby/blob/master/image/spec/v1.2.md#image-json-field-descriptions"> Docker Image Specification v1.2.0 </link>.
+     </para>
+     <para>
+      <emphasis>Default:</emphasis> <literal>{}</literal>
+     </para>
+    </listitem>
+   </varlistentry>
+   <varlistentry>
+    <term>
+     <varname>created</varname> <emphasis>optional</emphasis>
+    </term>
+    <listitem>
+     <para>
+      Date and time the layers were created. Follows the same <literal>now</literal> exception supported by <literal>buildImage</literal>.
+     </para>
+     <para>
+      <emphasis>Default:</emphasis> <literal>1970-01-01T00:00:01Z</literal>
+     </para>
+    </listitem>
+   </varlistentry>
+   <varlistentry>
+    <term>
+     <varname>maxLayers</varname> <emphasis>optional</emphasis>
+    </term>
+    <listitem>
+     <para>
+      Maximum number of layers to create.
+     </para>
+     <para>
+      <emphasis>Default:</emphasis> <literal>100</literal>
+     </para>
+     <para>
+      <emphasis>Maximum:</emphasis> <literal>125</literal>
+     </para>
+    </listitem>
+   </varlistentry>
+   <varlistentry>
+    <term>
+     <varname>extraCommands</varname> <emphasis>optional</emphasis>
+    </term>
+    <listitem>
+     <para>
+      Shell commands to run while building the final layer, without access to most of the layer contents. Changes to this layer are "on top" of all the other layers, so can create additional directories and files.
+     </para>
+    </listitem>
+   </varlistentry>
+  </variablelist>
+
+  <section xml:id="dockerTools-buildLayeredImage-arg-contents">
+   <title>Behavior of <varname>contents</varname> in the final image</title>
+
+   <para>
+    Each path directly listed in <varname>contents</varname> will have a symlink in the root of the image.
+   </para>
+
+   <para>
+    For example:
+<programlisting><![CDATA[
+pkgs.dockerTools.buildLayeredImage {
+  name = "hello";
+  contents = [ pkgs.hello ];
+}
+]]></programlisting>
+    will create symlinks for all the paths in the <literal>hello</literal> package:
+<screen><![CDATA[
+/bin/hello -> /nix/store/h1zb1padqbbb7jicsvkmrym3r6snphxg-hello-2.10/bin/hello
+/share/info/hello.info -> /nix/store/h1zb1padqbbb7jicsvkmrym3r6snphxg-hello-2.10/share/info/hello.info
+/share/locale/bg/LC_MESSAGES/hello.mo -> /nix/store/h1zb1padqbbb7jicsvkmrym3r6snphxg-hello-2.10/share/locale/bg/LC_MESSAGES/hello.mo
+]]></screen>
+   </para>
+  </section>
+
+  <section xml:id="dockerTools-buildLayeredImage-arg-config">
+   <title>Automatic inclusion of <varname>config</varname> references</title>
+
+   <para>
+    The closure of <varname>config</varname> is automatically included in the closure of the final image.
+   </para>
+
+   <para>
+    This allows you to make very simple Docker images with very little code. This container will start up and run <command>hello</command>:
+<programlisting><![CDATA[
+pkgs.dockerTools.buildLayeredImage {
+  name = "hello";
+  config.Cmd = [ "${pkgs.hello}/bin/hello" ];
+}
+]]></programlisting>
+   </para>
+  </section>
+
+  <section xml:id="dockerTools-buildLayeredImage-arg-maxLayers">
+   <title>Adjusting <varname>maxLayers</varname></title>
+
+   <para>
+    Increasing the <varname>maxLayers</varname> increases the number of layers which have a chance to be shared between different images.
+   </para>
+
+   <para>
+    Modern Docker installations support up to 128 layers, however older versions support as few as 42.
+   </para>
+
+   <para>
+    If the produced image will not be extended by other Docker builds, it is safe to set <varname>maxLayers</varname> to <literal>128</literal>. However it will be impossible to extend the image further.
+   </para>
+
+   <para>
+    The first (<literal>maxLayers-2</literal>) most "popular" paths will have their own individual layers, then layer #<literal>maxLayers-1</literal> will contain all the remaining "unpopular" paths, and finally layer #<literal>maxLayers</literal> will contain the Image configuration.
+   </para>
+
+   <para>
+    Docker's Layers are not inherently ordered, they are content-addressable and are not explicitly layered until they are composed in to an Image.
+   </para>
+  </section>
+ </section>
+
+ <section xml:id="ssec-pkgs-dockerTools-fetchFromRegistry">
+  <title>pullImage</title>
+
+  <para>
+   This function is analogous to the <command>docker pull</command> command, in that it can be used to pull a Docker image from a Docker registry. By default <link xlink:href="https://hub.docker.com/">Docker Hub</link> is used to pull images.
+  </para>
+
+  <para>
+   Its parameters are described in the example below:
+  </para>
+
+  <example xml:id='ex-dockerTools-pullImage'>
+   <title>Docker pull</title>
+<programlisting>
+pullImage {
+  imageName = "nixos/nix"; <co xml:id='ex-dockerTools-pullImage-1' />
+  imageDigest = "sha256:20d9485b25ecfd89204e843a962c1bd70e9cc6858d65d7f5fadc340246e2116b"; <co xml:id='ex-dockerTools-pullImage-2' />
+  finalImageName = "nix"; <co xml:id='ex-dockerTools-pullImage-3' />
+  finalImageTag = "1.11";  <co xml:id='ex-dockerTools-pullImage-4' />
+  sha256 = "0mqjy3zq2v6rrhizgb9nvhczl87lcfphq9601wcprdika2jz7qh8"; <co xml:id='ex-dockerTools-pullImage-5' />
+  os = "linux"; <co xml:id='ex-dockerTools-pullImage-6' />
+  arch = "x86_64"; <co xml:id='ex-dockerTools-pullImage-7' />
+}
+</programlisting>
+  </example>
+
+  <calloutlist>
+   <callout arearefs='ex-dockerTools-pullImage-1'>
+    <para>
+     <varname>imageName</varname> specifies the name of the image to be downloaded, which can also include the registry namespace (e.g. <literal>nixos</literal>). This argument is required.
+    </para>
+   </callout>
+   <callout arearefs='ex-dockerTools-pullImage-2'>
+    <para>
+     <varname>imageDigest</varname> specifies the digest of the image to be downloaded. This argument is required.
+    </para>
+   </callout>
+   <callout arearefs='ex-dockerTools-pullImage-3'>
+    <para>
+     <varname>finalImageName</varname>, if specified, this is the name of the image to be created. Note it is never used to fetch the image since we prefer to rely on the immutable digest ID. By default it's equal to <varname>imageName</varname>.
+    </para>
+   </callout>
+   <callout arearefs='ex-dockerTools-pullImage-4'>
+    <para>
+     <varname>finalImageTag</varname>, if specified, this is the tag of the image to be created. Note it is never used to fetch the image since we prefer to rely on the immutable digest ID. By default it's <literal>latest</literal>.
+    </para>
+   </callout>
+   <callout arearefs='ex-dockerTools-pullImage-5'>
+    <para>
+     <varname>sha256</varname> is the checksum of the whole fetched image. This argument is required.
+    </para>
+   </callout>
+   <callout arearefs='ex-dockerTools-pullImage-6'>
+    <para>
+     <varname>os</varname>, if specified, is the operating system of the fetched image. By default it's <literal>linux</literal>.
+    </para>
+   </callout>
+   <callout arearefs='ex-dockerTools-pullImage-7'>
+    <para>
+     <varname>arch</varname>, if specified, is the cpu architecture of the fetched image. By default it's <literal>x86_64</literal>.
+    </para>
+   </callout>
+  </calloutlist>
+
+  <para>
+   <literal>nix-prefetch-docker</literal> command can be used to get required image parameters:
+<screen>
+<prompt>$ </prompt>nix run nixpkgs.nix-prefetch-docker -c nix-prefetch-docker --image-name mysql --image-tag 5
+</screen>
+   Since a given <varname>imageName</varname> may transparently refer to a manifest list of images which support multiple architectures and/or operating systems, you can supply the <option>--os</option> and <option>--arch</option> arguments to specify exactly which image you want. By default it will match the OS and architecture of the host the command is run on.
+<screen>
+<prompt>$ </prompt>nix-prefetch-docker --image-name mysql --image-tag 5 --arch x86_64 --os linux
+</screen>
+   Desired image name and tag can be set using <option>--final-image-name</option> and <option>--final-image-tag</option> arguments:
+<screen>
+<prompt>$ </prompt>nix-prefetch-docker --image-name mysql --image-tag 5 --final-image-name eu.gcr.io/my-project/mysql --final-image-tag prod
+</screen>
+  </para>
+ </section>
+
+ <section xml:id="ssec-pkgs-dockerTools-exportImage">
+  <title>exportImage</title>
+
+  <para>
+   This function is analogous to the <command>docker export</command> command, in that it can be used to flatten a Docker image that contains multiple layers. It is in fact the result of the merge of all the layers of the image. As such, the result is suitable for being imported in Docker with <command>docker import</command>.
+  </para>
+
+  <note>
+   <para>
+    Using this function requires the <literal>kvm</literal> device to be available.
+   </para>
+  </note>
+
+  <para>
+   The parameters of <varname>exportImage</varname> are the following:
+  </para>
+
+  <example xml:id='ex-dockerTools-exportImage'>
+   <title>Docker export</title>
+<programlisting>
+exportImage {
+  fromImage = someLayeredImage;
+  fromImageName = null;
+  fromImageTag = null;
+
+  name = someLayeredImage.name;
+}
+</programlisting>
+  </example>
+
+  <para>
+   The parameters relative to the base image have the same synopsis as described in <xref linkend='ssec-pkgs-dockerTools-buildImage'/>, except that <varname>fromImage</varname> is the only required argument in this case.
+  </para>
+
+  <para>
+   The <varname>name</varname> argument is the name of the derivation output, which defaults to <varname>fromImage.name</varname>.
+  </para>
+ </section>
+
+ <section xml:id="ssec-pkgs-dockerTools-shadowSetup">
+  <title>shadowSetup</title>
+
+  <para>
+   This constant string is a helper for setting up the base files for managing users and groups, only if such files don't exist already. It is suitable for being used in a <varname>runAsRoot</varname> <xref linkend='ex-dockerTools-buildImage-runAsRoot'/> script for cases like in the example below:
+  </para>
+
+  <example xml:id='ex-dockerTools-shadowSetup'>
+   <title>Shadow base files</title>
+<programlisting>
+buildImage {
+  name = "shadow-basic";
+
+  runAsRoot = ''
+    #!${pkgs.runtimeShell}
+    ${shadowSetup}
+    groupadd -r redis
+    useradd -r -g redis redis
+    mkdir /data
+    chown redis:redis /data
+  '';
+}
+</programlisting>
+  </example>
+
+  <para>
+   Creating base files like <literal>/etc/passwd</literal> or <literal>/etc/login.defs</literal> is necessary for shadow-utils to manipulate users and groups.
+  </para>
+ </section>
+</section>

doc/builders/images/ocitools.xml

@@ -0,0 +1,62 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xmlns:xi="http://www.w3.org/2001/XInclude"
+         xml:id="sec-pkgs-ociTools">
+ <title>pkgs.ociTools</title>
+
+ <para>
+  <varname>pkgs.ociTools</varname> is a set of functions for creating containers according to the <link xlink:href="https://github.com/opencontainers/runtime-spec">OCI container specification v1.0.0</link>. Beyond that it makes no assumptions about the container runner you choose to use to run the created container.
+ </para>
+
+ <section xml:id="ssec-pkgs-ociTools-buildContainer">
+  <title>buildContainer</title>
+
+  <para>
+   This function creates a simple OCI container that runs a single command inside of it. An OCI container consists of a <varname>config.json</varname> and a rootfs directory.The nix store of the container will contain all referenced dependencies of the given command.
+  </para>
+
+  <para>
+   The parameters of <varname>buildContainer</varname> with an example value are described below:
+  </para>
+
+  <example xml:id='ex-ociTools-buildContainer'>
+   <title>Build Container</title>
+<programlisting>
+buildContainer {
+  args = [ (with pkgs; writeScript "run.sh" ''
+    #!${bash}/bin/bash
+    ${coreutils}/bin/exec ${bash}/bin/bash
+  '').outPath ]; <co xml:id='ex-ociTools-buildContainer-1' />
+
+  mounts = {
+    "/data" = {
+      type = "none";
+      source = "/var/lib/mydata";
+      options = [ "bind" ];
+    };
+  };<co xml:id='ex-ociTools-buildContainer-2' />
+
+  readonly = false; <co xml:id='ex-ociTools-buildContainer-3' />
+}
+
+    </programlisting>
+   <calloutlist>
+    <callout arearefs='ex-ociTools-buildContainer-1'>
+     <para>
+      <varname>args</varname> specifies a set of arguments to run inside the container. This is the only required argument for <varname>buildContainer</varname>. All referenced packages inside the derivation will be made available inside the container
+     </para>
+    </callout>
+    <callout arearefs='ex-ociTools-buildContainer-2'>
+     <para>
+      <varname>mounts</varname> specifies additional mount points chosen by the user. By default only a minimal set of necessary filesystems are mounted into the container (e.g procfs, cgroupfs)
+     </para>
+    </callout>
+    <callout arearefs='ex-ociTools-buildContainer-3'>
+     <para>
+      <varname>readonly</varname> makes the container's rootfs read-only if it is set to true. The default value is false <literal>false</literal>.
+     </para>
+    </callout>
+   </calloutlist>
+  </example>
+ </section>
+</section>

doc/builders/images/snap/example-firefox.nix

@@ -0,0 +1,28 @@
+let
+  inherit (import <nixpkgs> { }) snapTools firefox;
+in snapTools.makeSnap {
+  meta = {
+    name = "nix-example-firefox";
+    summary = firefox.meta.description;
+    architectures = [ "amd64" ];
+    apps.nix-example-firefox = {
+      command = "${firefox}/bin/firefox";
+      plugs = [
+        "pulseaudio"
+        "camera"
+        "browser-support"
+        "avahi-observe"
+        "cups-control"
+        "desktop"
+        "desktop-legacy"
+        "gsettings"
+        "home"
+        "network"
+        "mount-observe"
+        "removable-media"
+        "x11"
+      ];
+    };
+    confinement = "strict";
+  };
+}

doc/builders/images/snap/example-hello.nix

@@ -0,0 +1,12 @@
+let
+  inherit (import <nixpkgs> { }) snapTools hello;
+in snapTools.makeSnap {
+  meta = {
+    name = "hello";
+    summary = hello.meta.description;
+    description = hello.meta.longDescription;
+    architectures = [ "amd64" ];
+    confinement = "strict";
+    apps.hello.command = "${hello}/bin/hello";
+  };
+}

doc/builders/images/snaptools.xml

@@ -0,0 +1,59 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xmlns:xi="http://www.w3.org/2001/XInclude"
+         xml:id="sec-pkgs-snapTools">
+ <title>pkgs.snapTools</title>
+
+ <para>
+  <varname>pkgs.snapTools</varname> is a set of functions for creating Snapcraft images. Snap and Snapcraft is not used to perform these operations.
+ </para>
+
+ <section xml:id="ssec-pkgs-snapTools-makeSnap-signature">
+  <title>The makeSnap Function</title>
+
+  <para>
+   <function>makeSnap</function> takes a single named argument, <parameter>meta</parameter>. This argument mirrors <link xlink:href="https://docs.snapcraft.io/snap-format">the upstream <filename>snap.yaml</filename> format</link> exactly.
+  </para>
+
+  <para>
+   The <parameter>base</parameter> should not be be specified, as <function>makeSnap</function> will force set it.
+  </para>
+
+  <para>
+   Currently, <function>makeSnap</function> does not support creating GUI stubs.
+  </para>
+ </section>
+
+ <section xml:id="ssec-pkgs-snapTools-build-a-snap-hello">
+  <title>Build a Hello World Snap</title>
+
+  <example xml:id="ex-snapTools-buildSnap-hello">
+   <title>Making a Hello World Snap</title>
+   <para>
+    The following expression packages GNU Hello as a Snapcraft snap.
+   </para>
+<programlisting><xi:include href="./snap/example-hello.nix" parse="text" /></programlisting>
+   <para>
+    <command>nix-build</command> this expression and install it with <command>snap install ./result --dangerous</command>. <command>hello</command> will now be the Snapcraft version of the package.
+   </para>
+  </example>
+ </section>
+
+ <section xml:id="ssec-pkgs-snapTools-build-a-snap-firefox">
+  <title>Build a Hello World Snap</title>
+
+  <example xml:id="ex-snapTools-buildSnap-firefox">
+   <title>Making a Graphical Snap</title>
+   <para>
+    Graphical programs require many more integrations with the host. This example uses Firefox as an example, because it is one of the most complicated programs we could package.
+   </para>
+<programlisting><xi:include href="./snap/example-firefox.nix" parse="text" /></programlisting>
+   <para>
+    <command>nix-build</command> this expression and install it with <command>snap install ./result --dangerous</command>. <command>nix-example-firefox</command> will now be the Snapcraft version of the Firefox package.
+   </para>
+   <para>
+    The specific meaning behind plugs can be looked up in the <link xlink:href="https://docs.snapcraft.io/supported-interfaces">Snapcraft interface documentation</link>.
+   </para>
+  </example>
+ </section>
+</section>

doc/builders/packages/citrix.xml

@@ -0,0 +1,44 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xml:id="sec-citrix">
+ <title>Citrix Workspace</title>
+
+ <para>
+  <note>
+   <para>
+    Please note that the <literal>citrix_receiver</literal> package has been deprecated since its development was <link xlink:href="https://docs.citrix.com/en-us/citrix-workspace-app.html">discontinued by upstream</link> and has been replaced by <link xlink:href="https://www.citrix.com/products/workspace-app/">the citrix workspace app</link>.
+   </para>
+  </note>
+  <link xlink:href="https://www.citrix.com/products/receiver/">Citrix Receiver</link> and <link xlink:href="https://www.citrix.com/products/workspace-app/">Citrix Workspace App</link> are a remote desktop viewers which provide access to <link xlink:href="https://www.citrix.com/products/xenapp-xendesktop/">XenDesktop</link> installations.
+ </para>
+
+ <section xml:id="sec-citrix-base">
+  <title>Basic usage</title>
+
+  <para>
+   The tarball archive needs to be downloaded manually as the license agreements of the vendor for <link xlink:href="https://www.citrix.com/downloads/citrix-receiver/">Citrix Receiver</link> or <link xlink:href="https://www.citrix.de/downloads/workspace-app/linux/workspace-app-for-linux-latest.html">Citrix Workspace</link> need to be accepted first. Then run <command>nix-prefetch-url file://$PWD/linuxx64-$version.tar.gz</command>. With the archive available in the store the package can be built and installed with Nix.
+  </para>
+
+  <warning>
+   <title>Caution with <command>nix-shell</command> installs</title>
+   <para>
+    It's recommended to install <literal>Citrix Receiver</literal> and/or <literal>Citrix Workspace</literal> using <literal>nix-env -i</literal> or globally to ensure that the <literal>.desktop</literal> files are installed properly into <literal>$XDG_CONFIG_DIRS</literal>. Otherwise it won't be possible to open <literal>.ica</literal> files automatically from the browser to start a Citrix connection.
+   </para>
+  </warning>
+ </section>
+
+ <section xml:id="sec-citrix-custom-certs">
+  <title>Custom certificates</title>
+
+  <para>
+   The <literal>Citrix Workspace App</literal> in <literal>nixpkgs</literal> trust several certificates <link xlink:href="https://curl.haxx.se/docs/caextract.html">from the Mozilla database</link> by default. However several companies using Citrix might require their own corporate certificate. On distros with imperative packaging these certs can be stored easily in <link xlink:href="https://developer-docs.citrix.com/projects/receiver-for-linux-command-reference/en/13.7/"><literal>$ICAROOT</literal></link>, however this directory is a store path in <literal>nixpkgs</literal>. In order to work around this issue the package provides a simple mechanism to add custom certificates without rebuilding the entire package using <literal>symlinkJoin</literal>:
+<programlisting>
+<![CDATA[with import <nixpkgs> { config.allowUnfree = true; };
+let extraCerts = [ ./custom-cert-1.pem ./custom-cert-2.pem /* ... */ ]; in
+citrix_workspace.override {
+  inherit extraCerts;
+}]]>
+</programlisting>
+  </para>
+ </section>
+</section>

doc/builders/packages/dlib.xml

@@ -0,0 +1,24 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xml:id="dlib">
+ <title>DLib</title>
+
+ <para>
+  <link xlink:href="http://dlib.net/">DLib</link> is a modern, C++-based toolkit which provides several machine learning algorithms.
+ </para>
+
+ <section xml:id="compiling-without-avx-support">
+  <title>Compiling without AVX support</title>
+
+  <para>
+   Especially older CPUs don't support <link xlink:href="https://en.wikipedia.org/wiki/Advanced_Vector_Extensions">AVX</link> (<abbrev>Advanced Vector Extensions</abbrev>) instructions that are used by DLib to optimize their algorithms.
+  </para>
+
+  <para>
+   On the affected hardware errors like <literal>Illegal instruction</literal> will occur. In those cases AVX support needs to be disabled:
+<programlisting>self: super: {
+  dlib = super.dlib.override { avxSupport = false; };
+}</programlisting>
+  </para>
+ </section>
+</section>

doc/builders/packages/eclipse.xml

@@ -0,0 +1,72 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xml:id="sec-eclipse">
+ <title>Eclipse</title>
+
+ <para>
+  The Nix expressions related to the Eclipse platform and IDE are in <link xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/applications/editors/eclipse"><filename>pkgs/applications/editors/eclipse</filename></link>.
+ </para>
+
+ <para>
+  Nixpkgs provides a number of packages that will install Eclipse in its various forms. These range from the bare-bones Eclipse Platform to the more fully featured Eclipse SDK or Scala-IDE packages and multiple version are often available. It is possible to list available Eclipse packages by issuing the command:
+<screen>
+<prompt>$ </prompt>nix-env -f '&lt;nixpkgs&gt;' -qaP -A eclipses --description
+</screen>
+  Once an Eclipse variant is installed it can be run using the <command>eclipse</command> command, as expected. From within Eclipse it is then possible to install plugins in the usual manner by either manually specifying an Eclipse update site or by installing the Marketplace Client plugin and using it to discover and install other plugins. This installation method provides an Eclipse installation that closely resemble a manually installed Eclipse.
+ </para>
+
+ <para>
+  If you prefer to install plugins in a more declarative manner then Nixpkgs also offer a number of Eclipse plugins that can be installed in an <emphasis>Eclipse environment</emphasis>. This type of environment is created using the function <varname>eclipseWithPlugins</varname> found inside the <varname>nixpkgs.eclipses</varname> attribute set. This function takes as argument <literal>{ eclipse, plugins ? [], jvmArgs ? [] }</literal> where <varname>eclipse</varname> is a one of the Eclipse packages described above, <varname>plugins</varname> is a list of plugin derivations, and <varname>jvmArgs</varname> is a list of arguments given to the JVM running the Eclipse. For example, say you wish to install the latest Eclipse Platform with the popular Eclipse Color Theme plugin and also allow Eclipse to use more RAM. You could then add
+<screen>
+packageOverrides = pkgs: {
+  myEclipse = with pkgs.eclipses; eclipseWithPlugins {
+    eclipse = eclipse-platform;
+    jvmArgs = [ "-Xmx2048m" ];
+    plugins = [ plugins.color-theme ];
+  };
+}
+</screen>
+  to your Nixpkgs configuration (<filename>~/.config/nixpkgs/config.nix</filename>) and install it by running <command>nix-env -f '&lt;nixpkgs&gt;' -iA myEclipse</command> and afterward run Eclipse as usual. It is possible to find out which plugins are available for installation using <varname>eclipseWithPlugins</varname> by running
+<screen>
+<prompt>$ </prompt>nix-env -f '&lt;nixpkgs&gt;' -qaP -A eclipses.plugins --description
+</screen>
+ </para>
+
+ <para>
+  If there is a need to install plugins that are not available in Nixpkgs then it may be possible to define these plugins outside Nixpkgs using the <varname>buildEclipseUpdateSite</varname> and <varname>buildEclipsePlugin</varname> functions found in the <varname>nixpkgs.eclipses.plugins</varname> attribute set. Use the <varname>buildEclipseUpdateSite</varname> function to install a plugin distributed as an Eclipse update site. This function takes <literal>{ name, src }</literal> as argument where <literal>src</literal> indicates the Eclipse update site archive. All Eclipse features and plugins within the downloaded update site will be installed. When an update site archive is not available then the <varname>buildEclipsePlugin</varname> function can be used to install a plugin that consists of a pair of feature and plugin JARs. This function takes an argument <literal>{ name, srcFeature, srcPlugin }</literal> where <literal>srcFeature</literal> and <literal>srcPlugin</literal> are the feature and plugin JARs, respectively.
+ </para>
+
+ <para>
+  Expanding the previous example with two plugins using the above functions we have
+<screen>
+packageOverrides = pkgs: {
+  myEclipse = with pkgs.eclipses; eclipseWithPlugins {
+    eclipse = eclipse-platform;
+    jvmArgs = [ "-Xmx2048m" ];
+    plugins = [
+      plugins.color-theme
+      (plugins.buildEclipsePlugin {
+        name = "myplugin1-1.0";
+        srcFeature = fetchurl {
+          url = "http://…/features/myplugin1.jar";
+          sha256 = "123…";
+        };
+        srcPlugin = fetchurl {
+          url = "http://…/plugins/myplugin1.jar";
+          sha256 = "123…";
+        };
+      });
+      (plugins.buildEclipseUpdateSite {
+        name = "myplugin2-1.0";
+        src = fetchurl {
+          stripRoot = false;
+          url = "http://…/myplugin2.zip";
+          sha256 = "123…";
+        };
+      });
+    ];
+  };
+}
+</screen>
+ </para>
+</section>

doc/builders/packages/elm.xml

@@ -0,0 +1,17 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xml:id="sec-elm">
+ <title>Elm</title>
+
+ <para>
+  To start a development environment do <command>nix-shell -p elmPackages.elm elmPackages.elm-format</command>
+ </para>
+
+ <para>
+  To update Elm compiler, see <filename>nixpkgs/pkgs/development/compilers/elm/README.md</filename>.
+ </para>
+
+ <para>
+  To package Elm applications, <link xlink:href="https://github.com/hercules-ci/elm2nix#elm2nix">read about elm2nix</link>.
+ </para>
+</section>

doc/builders/packages/emacs.xml

@@ -0,0 +1,131 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xml:id="sec-emacs">
+ <title>Emacs</title>
+
+ <section xml:id="sec-emacs-config">
+  <title>Configuring Emacs</title>
+
+  <para>
+   The Emacs package comes with some extra helpers to make it easier to configure. <varname>emacsWithPackages</varname> allows you to manage packages from ELPA. This means that you will not have to install that packages from within Emacs. For instance, if you wanted to use <literal>company</literal>, <literal>counsel</literal>, <literal>flycheck</literal>, <literal>ivy</literal>, <literal>magit</literal>, <literal>projectile</literal>, and <literal>use-package</literal> you could use this as a <filename>~/.config/nixpkgs/config.nix</filename> override:
+  </para>
+
+<screen>
+{
+  packageOverrides = pkgs: with pkgs; {
+    myEmacs = emacsWithPackages (epkgs: (with epkgs.melpaStablePackages; [
+      company
+      counsel
+      flycheck
+      ivy
+      magit
+      projectile
+      use-package
+    ]));
+  }
+}
+</screen>
+
+  <para>
+   You can install it like any other packages via <command>nix-env -iA myEmacs</command>. However, this will only install those packages. It will not <literal>configure</literal> them for us. To do this, we need to provide a configuration file. Luckily, it is possible to do this from within Nix! By modifying the above example, we can make Emacs load a custom config file. The key is to create a package that provide a <filename>default.el</filename> file in <filename>/share/emacs/site-start/</filename>. Emacs knows to load this file automatically when it starts.
+  </para>
+
+<screen>
+{
+  packageOverrides = pkgs: with pkgs; rec {
+    myEmacsConfig = writeText "default.el" ''
+;; initialize package
+
+(require 'package)
+(package-initialize 'noactivate)
+(eval-when-compile
+  (require 'use-package))
+
+;; load some packages
+
+(use-package company
+  :bind ("&lt;C-tab&gt;" . company-complete)
+  :diminish company-mode
+  :commands (company-mode global-company-mode)
+  :defer 1
+  :config
+  (global-company-mode))
+
+(use-package counsel
+  :commands (counsel-descbinds)
+  :bind (([remap execute-extended-command] . counsel-M-x)
+         ("C-x C-f" . counsel-find-file)
+         ("C-c g" . counsel-git)
+         ("C-c j" . counsel-git-grep)
+         ("C-c k" . counsel-ag)
+         ("C-x l" . counsel-locate)
+         ("M-y" . counsel-yank-pop)))
+
+(use-package flycheck
+  :defer 2
+  :config (global-flycheck-mode))
+
+(use-package ivy
+  :defer 1
+  :bind (("C-c C-r" . ivy-resume)
+         ("C-x C-b" . ivy-switch-buffer)
+         :map ivy-minibuffer-map
+         ("C-j" . ivy-call))
+  :diminish ivy-mode
+  :commands ivy-mode
+  :config
+  (ivy-mode 1))
+
+(use-package magit
+  :defer
+  :if (executable-find "git")
+  :bind (("C-x g" . magit-status)
+         ("C-x G" . magit-dispatch-popup))
+  :init
+  (setq magit-completing-read-function 'ivy-completing-read))
+
+(use-package projectile
+  :commands projectile-mode
+  :bind-keymap ("C-c p" . projectile-command-map)
+  :defer 5
+  :config
+  (projectile-global-mode))
+    '';
+    myEmacs = emacsWithPackages (epkgs: (with epkgs.melpaStablePackages; [
+      (runCommand "default.el" {} ''
+mkdir -p $out/share/emacs/site-lisp
+cp ${myEmacsConfig} $out/share/emacs/site-lisp/default.el
+'')
+      company
+      counsel
+      flycheck
+      ivy
+      magit
+      projectile
+      use-package
+    ]));
+  };
+}
+</screen>
+
+  <para>
+   This provides a fairly full Emacs start file. It will load in addition to the user's presonal config. You can always disable it by passing <command>-q</command> to the Emacs command.
+  </para>
+
+  <para>
+   Sometimes <varname>emacsWithPackages</varname> is not enough, as this package set has some priorities imposed on packages (with the lowest priority assigned to Melpa Unstable, and the highest for packages manually defined in <filename>pkgs/top-level/emacs-packages.nix</filename>). But you can't control this priorities when some package is installed as a dependency. You can override it on per-package-basis, providing all the required dependencies manually - but it's tedious and there is always a possibility that an unwanted dependency will sneak in through some other package. To completely override such a package you can use <varname>overrideScope'</varname>.
+  </para>
+
+<screen>
+overrides = self: super: rec {
+  haskell-mode = self.melpaPackages.haskell-mode;
+  ...
+};
+((emacsPackagesGen emacs).overrideScope' overrides).emacsWithPackages (p: with p; [
+  # here both these package will use haskell-mode of our own choice
+  ghc-mod
+  dante
+])
+</screen>
+ </section>
+</section>

doc/builders/packages/ibus.xml

@@ -0,0 +1,57 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xml:id="sec-ibus-typing-booster">
+ <title>ibus-engines.typing-booster</title>
+
+ <para>
+  This package is an ibus-based completion method to speed up typing.
+ </para>
+
+ <section xml:id="sec-ibus-typing-booster-activate">
+  <title>Activating the engine</title>
+
+  <para>
+   IBus needs to be configured accordingly to activate <literal>typing-booster</literal>. The configuration depends on the desktop manager in use. For detailed instructions, please refer to the <link xlink:href="https://mike-fabian.github.io/ibus-typing-booster/documentation.html">upstream docs</link>.
+  </para>
+
+  <para>
+   On NixOS you need to explicitly enable <literal>ibus</literal> with given engines before customizing your desktop to use <literal>typing-booster</literal>. This can be achieved using the <literal>ibus</literal> module:
+<programlisting>{ pkgs, ... }: {
+  i18n.inputMethod = {
+    enabled = "ibus";
+    ibus.engines = with pkgs.ibus-engines; [ typing-booster ];
+  };
+}</programlisting>
+  </para>
+ </section>
+
+ <section xml:id="sec-ibus-typing-booster-customize-hunspell">
+  <title>Using custom hunspell dictionaries</title>
+
+  <para>
+   The IBus engine is based on <literal>hunspell</literal> to support completion in many languages. By default the dictionaries <literal>de-de</literal>, <literal>en-us</literal>, <literal>fr-moderne</literal> <literal>es-es</literal>, <literal>it-it</literal>, <literal>sv-se</literal> and <literal>sv-fi</literal> are in use. To add another dictionary, the package can be overridden like this:
+<programlisting>ibus-engines.typing-booster.override {
+  langs = [ "de-at" "en-gb" ];
+}</programlisting>
+  </para>
+
+  <para>
+   <emphasis>Note: each language passed to <literal>langs</literal> must be an attribute name in <literal>pkgs.hunspellDicts</literal>.</emphasis>
+  </para>
+ </section>
+
+ <section xml:id="sec-ibus-typing-booster-emoji-picker">
+  <title>Built-in emoji picker</title>
+
+  <para>
+   The <literal>ibus-engines.typing-booster</literal> package contains a program named <literal>emoji-picker</literal>. To display all emojis correctly, a special font such as <literal>noto-fonts-emoji</literal> is needed:
+  </para>
+
+  <para>
+   On NixOS it can be installed using the following expression:
+<programlisting>{ pkgs, ... }: {
+  fonts.fonts = with pkgs; [ noto-fonts-emoji ];
+}</programlisting>
+  </para>
+ </section>
+</section>

doc/builders/packages/index.xml

@@ -0,0 +1,24 @@
+<chapter xmlns="http://docbook.org/ns/docbook"
+         xmlns:xi="http://www.w3.org/2001/XInclude"
+         xml:id="chap-packages">
+ <title>Packages</title>
+ <para>
+  This chapter contains information about how to use and maintain the Nix expressions for a number of specific packages, such as the Linux kernel or X.org.
+ </para>
+ <xi:include href="citrix.xml" />
+ <xi:include href="dlib.xml" />
+ <xi:include href="eclipse.xml" />
+ <xi:include href="elm.xml" />
+ <xi:include href="emacs.xml" />
+ <xi:include href="ibus.xml" />
+ <xi:include href="kakoune.xml" />
+ <xi:include href="linux.xml" />
+ <xi:include href="locales.xml" />
+ <xi:include href="nginx.xml" />
+ <xi:include href="opengl.xml" />
+ <xi:include href="shell-helpers.xml" />
+ <xi:include href="steam.xml" />
+ <xi:include href="urxvt.xml" />
+ <xi:include href="weechat.xml" />
+ <xi:include href="xorg.xml" />
+</chapter>

doc/builders/packages/kakoune.xml

@@ -0,0 +1,14 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xml:id="sec-kakoune">
+ <title>Kakoune</title>
+
+ <para>
+  Kakoune can be built to autoload plugins:
+<programlisting>(kakoune.override {
+  configure = {
+    plugins = with pkgs.kakounePlugins; [ parinfer-rust ];
+  };
+})</programlisting>
+ </para>
+</section>

doc/builders/packages/linux.xml

@@ -0,0 +1,85 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xml:id="sec-linux-kernel">
+ <title>Linux kernel</title>
+
+ <para>
+  The Nix expressions to build the Linux kernel are in <link
+xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/os-specific/linux/kernel"><filename>pkgs/os-specific/linux/kernel</filename></link>.
+ </para>
+
+ <para>
+  The function that builds the kernel has an argument <varname>kernelPatches</varname> which should be a list of <literal>{name, patch, extraConfig}</literal> attribute sets, where <varname>name</varname> is the name of the patch (which is included in the kernel’s <varname>meta.description</varname> attribute), <varname>patch</varname> is the patch itself (possibly compressed), and <varname>extraConfig</varname> (optional) is a string specifying extra options to be concatenated to the kernel configuration file (<filename>.config</filename>).
+ </para>
+
+ <para>
+  The kernel derivation exports an attribute <varname>features</varname> specifying whether optional functionality is or isn’t enabled. This is used in NixOS to implement kernel-specific behaviour. For instance, if the kernel has the <varname>iwlwifi</varname> feature (i.e. has built-in support for Intel wireless chipsets), then NixOS doesn’t have to build the external <varname>iwlwifi</varname> package:
+<programlisting>
+modulesTree = [kernel]
+  ++ pkgs.lib.optional (!kernel.features ? iwlwifi) kernelPackages.iwlwifi
+  ++ ...;
+</programlisting>
+ </para>
+
+ <para>
+  How to add a new (major) version of the Linux kernel to Nixpkgs:
+  <orderedlist>
+   <listitem>
+    <para>
+     Copy the old Nix expression (e.g. <filename>linux-2.6.21.nix</filename>) to the new one (e.g. <filename>linux-2.6.22.nix</filename>) and update it.
+    </para>
+   </listitem>
+   <listitem>
+    <para>
+     Add the new kernel to <filename>all-packages.nix</filename> (e.g., create an attribute <varname>kernel_2_6_22</varname>).
+    </para>
+   </listitem>
+   <listitem>
+    <para>
+     Now we’re going to update the kernel configuration. First unpack the kernel. Then for each supported platform (<literal>i686</literal>, <literal>x86_64</literal>, <literal>uml</literal>) do the following:
+     <orderedlist>
+      <listitem>
+       <para>
+        Make an copy from the old config (e.g. <filename>config-2.6.21-i686-smp</filename>) to the new one (e.g. <filename>config-2.6.22-i686-smp</filename>).
+       </para>
+      </listitem>
+      <listitem>
+       <para>
+        Copy the config file for this platform (e.g. <filename>config-2.6.22-i686-smp</filename>) to <filename>.config</filename> in the kernel source tree.
+       </para>
+      </listitem>
+      <listitem>
+       <para>
+        Run <literal>make oldconfig ARCH=<replaceable>{i386,x86_64,um}</replaceable></literal> and answer all questions. (For the uml configuration, also add <literal>SHELL=bash</literal>.) Make sure to keep the configuration consistent between platforms (i.e. don’t enable some feature on <literal>i686</literal> and disable it on <literal>x86_64</literal>).
+       </para>
+      </listitem>
+      <listitem>
+       <para>
+        If needed you can also run <literal>make menuconfig</literal>:
+<screen>
+<prompt>$ </prompt>nix-env -i ncurses
+<prompt>$ </prompt>export NIX_CFLAGS_LINK=-lncurses
+<prompt>$ </prompt>make menuconfig ARCH=<replaceable>arch</replaceable></screen>
+       </para>
+      </listitem>
+      <listitem>
+       <para>
+        Copy <filename>.config</filename> over the new config file (e.g. <filename>config-2.6.22-i686-smp</filename>).
+       </para>
+      </listitem>
+     </orderedlist>
+    </para>
+   </listitem>
+   <listitem>
+    <para>
+     Test building the kernel: <literal>nix-build -A kernel_2_6_22</literal>. If it compiles, ship it! For extra credit, try booting NixOS with it.
+    </para>
+   </listitem>
+   <listitem>
+    <para>
+     It may be that the new kernel requires updating the external kernel modules and kernel-dependent packages listed in the <varname>linuxPackagesFor</varname> function in <filename>all-packages.nix</filename> (such as the NVIDIA drivers, AUFS, etc.). If the updated packages aren’t backwards compatible with older kernels, you may need to keep the older versions around.
+    </para>
+   </listitem>
+  </orderedlist>
+ </para>
+</section>

doc/builders/packages/locales.xml

@@ -0,0 +1,13 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xml:id="locales">
+ <title>Locales</title>
+
+ <para>
+  To allow simultaneous use of packages linked against different versions of <literal>glibc</literal> with different locale archive formats Nixpkgs patches <literal>glibc</literal> to rely on <literal>LOCALE_ARCHIVE</literal> environment variable.
+ </para>
+
+ <para>
+  On non-NixOS distributions this variable is obviously not set. This can cause regressions in language support or even crashes in some Nixpkgs-provided programs. The simplest way to mitigate this problem is exporting the <literal>LOCALE_ARCHIVE</literal> variable pointing to <literal>${glibcLocales}/lib/locale/locale-archive</literal>. The drawback (and the reason this is not the default) is the relatively large (a hundred MiB) size of the full set of locales. It is possible to build a custom set of locales by overriding parameters <literal>allLocales</literal> and <literal>locales</literal> of the package.
+ </para>
+</section>

doc/builders/packages/nginx.xml

@@ -0,0 +1,25 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xml:id="sec-nginx">
+ <title>Nginx</title>
+
+ <para>
+  <link xlink:href="https://nginx.org/">Nginx</link> is a reverse proxy and lightweight webserver.
+ </para>
+
+ <section xml:id="sec-nginx-etag">
+  <title>ETags on static files served from the Nix store</title>
+
+  <para>
+   HTTP has a couple different mechanisms for caching to prevent clients from having to download the same content repeatedly if a resource has not changed since the last time it was requested. When nginx is used as a server for static files, it implements the caching mechanism based on the <link xlink:href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Last-Modified"><literal>Last-Modified</literal></link> response header automatically; unfortunately, it works by using filesystem timestamps to determine the value of the <literal>Last-Modified</literal> header. This doesn't give the desired behavior when the file is in the Nix store, because all file timestamps are set to 0 (for reasons related to build reproducibility).
+  </para>
+
+  <para>
+   Fortunately, HTTP supports an alternative (and more effective) caching mechanism: the <link xlink:href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/ETag"><literal>ETag</literal></link> response header. The value of the <literal>ETag</literal> header specifies some identifier for the particular content that the server is sending (e.g. a hash). When a client makes a second request for the same resource, it sends that value back in an <literal>If-None-Match</literal> header. If the ETag value is unchanged, then the server does not need to resend the content.
+  </para>
+
+  <para>
+   As of NixOS 19.09, the nginx package in Nixpkgs is patched such that when nginx serves a file out of <filename>/nix/store</filename>, the hash in the store path is used as the <literal>ETag</literal> header in the HTTP response, thus providing proper caching functionality. This happens automatically; you do not need to do modify any configuration to get this behavior.
+  </para>
+ </section>
+</section>

doc/builders/packages/opengl.xml

@@ -0,0 +1,9 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xml:id="sec-opengl">
+ <title>OpenGL</title>
+
+ <para>
+  Packages that use OpenGL have NixOS desktop as their primary target. The current solution for loading the GPU-specific drivers is based on <literal>libglvnd</literal> and looks for the driver implementation in <literal>LD_LIBRARY_PATH</literal>. If you are using a non-NixOS GNU/Linux/X11 desktop with free software video drivers, consider launching OpenGL-dependent programs from Nixpkgs with Nixpkgs versions of <literal>libglvnd</literal> and <literal>mesa_drivers</literal> in <literal>LD_LIBRARY_PATH</literal>. For proprietary video drivers you might have luck with also adding the corresponding video driver package.
+ </para>
+</section>

doc/builders/packages/shell-helpers.xml

@@ -0,0 +1,25 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xml:id="sec-shell-helpers">
+ <title>Interactive shell helpers</title>
+
+ <para>
+  Some packages provide the shell integration to be more useful. But unlike other systems, nix doesn't have a standard share directory location. This is why a bunch <command>PACKAGE-share</command> scripts are shipped that print the location of the corresponding shared folder. Current list of such packages is as following:
+  <itemizedlist>
+   <listitem>
+    <para>
+     <literal>autojump</literal>: <command>autojump-share</command>
+    </para>
+   </listitem>
+   <listitem>
+    <para>
+     <literal>fzf</literal>: <command>fzf-share</command>
+    </para>
+   </listitem>
+  </itemizedlist>
+  E.g. <literal>autojump</literal> can then used in the .bashrc like this:
+<screen>
+  source "$(autojump-share)/autojump.bash"
+</screen>
+ </para>
+</section>

doc/builders/packages/steam.xml

@@ -0,0 +1,131 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xml:id="sec-steam">
+ <title>Steam</title>
+
+ <section xml:id="sec-steam-nix">
+  <title>Steam in Nix</title>
+
+  <para>
+   Steam is distributed as a <filename>.deb</filename> file, for now only as an i686 package (the amd64 package only has documentation). When unpacked, it has a script called <filename>steam</filename> that in Ubuntu (their target distro) would go to <filename>/usr/bin </filename>. When run for the first time, this script copies some files to the user's home, which include another script that is the ultimate responsible for launching the steam binary, which is also in $HOME.
+  </para>
+
+  <para>
+   Nix problems and constraints:
+   <itemizedlist>
+    <listitem>
+     <para>
+      We don't have <filename>/bin/bash</filename> and many scripts point there. Similarly for <filename>/usr/bin/python</filename> .
+     </para>
+    </listitem>
+    <listitem>
+     <para>
+      We don't have the dynamic loader in <filename>/lib </filename>.
+     </para>
+    </listitem>
+    <listitem>
+     <para>
+      The <filename>steam.sh</filename> script in $HOME can not be patched, as it is checked and rewritten by steam.
+     </para>
+    </listitem>
+    <listitem>
+     <para>
+      The steam binary cannot be patched, it's also checked.
+     </para>
+    </listitem>
+   </itemizedlist>
+  </para>
+
+  <para>
+   The current approach to deploy Steam in NixOS is composing a FHS-compatible chroot environment, as documented <link xlink:href="http://sandervanderburg.blogspot.nl/2013/09/composing-fhs-compatible-chroot.html">here</link>. This allows us to have binaries in the expected paths without disrupting the system, and to avoid patching them to work in a non FHS environment.
+  </para>
+ </section>
+
+ <section xml:id="sec-steam-play">
+  <title>How to play</title>
+
+  <para>
+   For 64-bit systems it's important to have
+<programlisting>hardware.opengl.driSupport32Bit = true;</programlisting>
+   in your <filename>/etc/nixos/configuration.nix</filename>. You'll also need
+<programlisting>hardware.pulseaudio.support32Bit = true;</programlisting>
+   if you are using PulseAudio - this will enable 32bit ALSA apps integration. To use the Steam controller or other Steam supported controllers such as the DualShock 4 or Nintendo Switch Pro, you need to add
+<programlisting>hardware.steam-hardware.enable = true;</programlisting>
+   to your configuration.
+  </para>
+ </section>
+
+ <section xml:id="sec-steam-troub">
+  <title>Troubleshooting</title>
+
+  <para>
+   <variablelist>
+    <varlistentry>
+     <term>
+      Steam fails to start. What do I do?
+     </term>
+     <listitem>
+      <para>
+       Try to run
+<programlisting>strace steam</programlisting>
+       to see what is causing steam to fail.
+      </para>
+     </listitem>
+    </varlistentry>
+    <varlistentry>
+     <term>
+      Using the FOSS Radeon or nouveau (nvidia) drivers
+     </term>
+     <listitem>
+      <itemizedlist>
+       <listitem>
+        <para>
+         The <literal>newStdcpp</literal> parameter was removed since NixOS 17.09 and should not be needed anymore.
+        </para>
+       </listitem>
+       <listitem>
+        <para>
+         Steam ships statically linked with a version of libcrypto that conflics with the one dynamically loaded by radeonsi_dri.so. If you get the error
+<programlisting>steam.sh: line 713: 7842 Segmentation fault (core dumped)</programlisting>
+         have a look at <link xlink:href="https://github.com/NixOS/nixpkgs/pull/20269">this pull request</link>.
+        </para>
+       </listitem>
+      </itemizedlist>
+     </listitem>
+    </varlistentry>
+    <varlistentry>
+     <term>
+      Java
+     </term>
+     <listitem>
+      <orderedlist>
+       <listitem>
+        <para>
+         There is no java in steam chrootenv by default. If you get a message like
+<programlisting>/home/foo/.local/share/Steam/SteamApps/common/towns/towns.sh: line 1: java: command not found</programlisting>
+         You need to add
+<programlisting> steam.override { withJava = true; };</programlisting>
+         to your configuration.
+        </para>
+       </listitem>
+      </orderedlist>
+     </listitem>
+    </varlistentry>
+   </variablelist>
+  </para>
+ </section>
+
+ <section xml:id="sec-steam-run">
+  <title>steam-run</title>
+
+  <para>
+   The FHS-compatible chroot used for steam can also be used to run other linux games that expect a FHS environment. To do it, add
+<programlisting>pkgs.(steam.override {
+          nativeOnly = true;
+          newStdcpp = true;
+        }).run</programlisting>
+   to your configuration, rebuild, and run the game with
+<programlisting>steam-run ./foo</programlisting>
+  </para>
+ </section>
+</section>

doc/builders/packages/unfree.xml

@@ -0,0 +1,13 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xml:id="unfree-software">
+ <title>Unfree software</title>
+
+ <para>
+  All users of Nixpkgs are free software users, and many users (and developers) of Nixpkgs want to limit and tightly control their exposure to unfree software. At the same time, many users need (or want) to run some specific pieces of proprietary software. Nixpkgs includes some expressions for unfree software packages. By default unfree software cannot be installed and doesn’t show up in searches. To allow installing unfree software in a single Nix invocation one can export <literal>NIXPKGS_ALLOW_UNFREE=1</literal>. For a persistent solution, users can set <literal>allowUnfree</literal> in the Nixpkgs configuration.
+ </para>
+
+ <para>
+  Fine-grained control is possible by defining <literal>allowUnfreePredicate</literal> function in config; it takes the <literal>mkDerivation</literal> parameter attrset and returns <literal>true</literal> for unfree packages that should be allowed.
+ </para>
+</section>

doc/builders/packages/urxvt.xml

@@ -0,0 +1,101 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xml:id="sec-urxvt">
+ <title>Urxvt</title>
+
+ <para>
+  Urxvt, also known as rxvt-unicode, is a highly customizable terminal emulator.
+ </para>
+
+ <section xml:id="sec-urxvt-conf">
+
+  <title>Configuring urxvt</title>
+
+  <para>
+   In <literal>nixpkgs</literal>, urxvt is provided by the package
+   <literal>rxvt-unicode</literal>. It can be configured to include your choice
+   of plugins, reducing its closure size from the default configuration which
+   includes all available plugins. To make use of this functionality, use an
+   overlay or directly install an expression that overrides its configuration,
+   such as
+   <programlisting>rxvt-unicode.override { configure = { availablePlugins, ... }: {
+    plugins = with availablePlugins; [ perls resize-font vtwheel ];
+  }
+}</programlisting>
+   If the <literal>configure</literal> function returns an attrset without the
+   <literal>plugins</literal> attribute, <literal>availablePlugins</literal>
+   will be used automatically.
+  </para>
+
+  <para>
+   In order to add plugins but also keep all default plugins installed, it is
+   possible to use the following method:
+   <programlisting>rxvt-unicode.override { configure = { availablePlugins, ... }: {
+     plugins = (builtins.attrValues availablePlugins) ++ [ custom-plugin ];
+   };
+}</programlisting>
+  </para>
+
+  <para>
+   To get a list of all the plugins available, open the Nix REPL and run
+   <programlisting>$ nix repl
+:l &lt;nixpkgs&gt;
+map (p: p.name) pkgs.rxvt-unicode.plugins
+   </programlisting>
+   Alternatively, if your shell is bash or zsh and have completion enabled,
+   simply type <literal>nixpkgs.rxvt-unicode.plugins.&lt;tab&gt;</literal>.
+  </para>
+
+  <para>
+    In addition to <literal>plugins</literal> the options
+    <literal>extraDeps</literal> and <literal>perlDeps</literal> can be used
+    to install extra packages.
+    <literal>extraDeps</literal> can be used, for example, to provide 
+    <literal>xsel</literal> (a clipboard manager) to the clipboard plugin,
+    without installing it globally:
+    <programlisting>rxvt-unicode.override { configure = { availablePlugins, ... }: {
+     pluginsDeps = [ xsel ];
+   }
+}</programlisting>
+
+    <literal>perlDeps</literal> is a handy way to provide Perl packages to
+    your custom plugins (in <literal>$HOME/.urxvt/ext</literal>). For example,
+    if you need <literal>AnyEvent</literal> you can do:
+    <programlisting>rxvt-unicode.override { configure = { availablePlugins, ... }: {
+     perlDeps = with perlPackages; [ AnyEvent ];
+   }
+}</programlisting>
+  </para>
+
+ </section>
+
+ <section xml:id="sec-urxvt-pkg">
+
+  <title>Packaging urxvt plugins</title>
+
+  <para>
+   Urxvt plugins resides in
+   <literal>pkgs/applications/misc/rxvt-unicode-plugins</literal>.
+   To add a new plugin create an expression in a subdirectory and add the
+   package to the set in
+   <literal>pkgs/applications/misc/rxvt-unicode-plugins/default.nix</literal>.
+  </para>
+
+  <para>
+   A plugin can be any kind of derivation, the only requirement is that it
+   should always install perl scripts in <literal>$out/lib/urxvt/perl</literal>.
+   Look for existing plugins for examples.
+  </para>
+
+  <para>
+   If the plugin is itself a perl package that needs to be imported from
+   other plugins or scripts, add the following passthrough:
+   <programlisting>passthru.perlPackages = [ "self" ];
+</programlisting>
+   This will make the urxvt wrapper pick up the dependency and set up the perl
+   path accordingly.
+  </para>
+
+ </section>
+
+</section>

doc/builders/packages/weechat.xml

@@ -0,0 +1,85 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xml:id="sec-weechat">
+ <title>Weechat</title>
+
+ <para>
+  Weechat can be configured to include your choice of plugins, reducing its closure size from the default configuration which includes all available plugins. To make use of this functionality, install an expression that overrides its configuration such as
+<programlisting>weechat.override {configure = {availablePlugins, ...}: {
+    plugins = with availablePlugins; [ python perl ];
+  }
+}</programlisting>
+  If the <literal>configure</literal> function returns an attrset without the <literal>plugins</literal> attribute, <literal>availablePlugins</literal> will be used automatically.
+ </para>
+
+ <para>
+  The plugins currently available are <literal>python</literal>, <literal>perl</literal>, <literal>ruby</literal>, <literal>guile</literal>, <literal>tcl</literal> and <literal>lua</literal>.
+ </para>
+
+ <para>
+  The python and perl plugins allows the addition of extra libraries. For instance, the <literal>inotify.py</literal> script in weechat-scripts requires D-Bus or libnotify, and the <literal>fish.py</literal> script requires pycrypto. To use these scripts, use the plugin's <literal>withPackages</literal> attribute:
+<programlisting>weechat.override { configure = {availablePlugins, ...}: {
+    plugins = with availablePlugins; [
+            (python.withPackages (ps: with ps; [ pycrypto python-dbus ]))
+        ];
+    };
+}
+</programlisting>
+ </para>
+
+ <para>
+  In order to also keep all default plugins installed, it is possible to use the following method:
+<programlisting>weechat.override { configure = { availablePlugins, ... }: {
+  plugins = builtins.attrValues (availablePlugins // {
+    python = availablePlugins.python.withPackages (ps: with ps; [ pycrypto python-dbus ]);
+  });
+}; }
+</programlisting>
+ </para>
+
+ <para>
+  WeeChat allows to set defaults on startup using the <literal>--run-command</literal>. The <literal>configure</literal> method can be used to pass commands to the program:
+<programlisting>weechat.override {
+  configure = { availablePlugins, ... }: {
+    init = ''
+      /set foo bar
+      /server add freenode chat.freenode.org
+    '';
+  };
+}</programlisting>
+  Further values can be added to the list of commands when running <literal>weechat --run-command "your-commands"</literal>.
+ </para>
+
+ <para>
+  Additionally it's possible to specify scripts to be loaded when starting <literal>weechat</literal>. These will be loaded before the commands from <literal>init</literal>:
+<programlisting>weechat.override {
+  configure = { availablePlugins, ... }: {
+    scripts = with pkgs.weechatScripts; [
+      weechat-xmpp weechat-matrix-bridge wee-slack
+    ];
+    init = ''
+      /set plugins.var.python.jabber.key "val"
+    '':
+  };
+}</programlisting>
+ </para>
+
+ <para>
+  In <literal>nixpkgs</literal> there's a subpackage which contains derivations for WeeChat scripts. Such derivations expect a <literal>passthru.scripts</literal> attribute which contains a list of all scripts inside the store path. Furthermore all scripts have to live in <literal>$out/share</literal>. An exemplary derivation looks like this:
+<programlisting>{ stdenv, fetchurl }:
+
+stdenv.mkDerivation {
+  name = "exemplary-weechat-script";
+  src = fetchurl {
+    url = "https://scripts.tld/your-scripts.tar.gz";
+    sha256 = "...";
+  };
+  passthru.scripts = [ "foo.py" "bar.lua" ];
+  installPhase = ''
+    mkdir $out/share
+    cp foo.py $out/share
+    cp bar.lua $out/share
+  '';
+}</programlisting>
+ </para>
+</section>

doc/builders/packages/xorg.xml

@@ -0,0 +1,34 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xml:id="sec-xorg">
+ <title>X.org</title>
+
+ <para>
+  The Nix expressions for the X.org packages reside in <filename>pkgs/servers/x11/xorg/default.nix</filename>. This file is automatically generated from lists of tarballs in an X.org release. As such it should not be modified directly; rather, you should modify the lists, the generator script or the file <filename>pkgs/servers/x11/xorg/overrides.nix</filename>, in which you can override or add to the derivations produced by the generator.
+ </para>
+
+ <para>
+  The generator is invoked as follows:
+<screen>
+<prompt>$ </prompt>cd pkgs/servers/x11/xorg
+<prompt>$ </prompt>cat tarballs-7.5.list extra.list old.list \
+  | perl ./generate-expr-from-tarballs.pl
+</screen>
+  For each of the tarballs in the <filename>.list</filename> files, the script downloads it, unpacks it, and searches its <filename>configure.ac</filename> and <filename>*.pc.in</filename> files for dependencies. This information is used to generate <filename>default.nix</filename>. The generator caches downloaded tarballs between runs. Pay close attention to the <literal>NOT FOUND: <replaceable>name</replaceable></literal> messages at the end of the run, since they may indicate missing dependencies. (Some might be optional dependencies, however.)
+ </para>
+
+ <para>
+  A file like <filename>tarballs-7.5.list</filename> contains all tarballs in a X.org release. It can be generated like this:
+<screen>
+<prompt>$ </prompt>export i="mirror://xorg/X11R7.4/src/everything/"
+<prompt>$ </prompt>cat $(PRINT_PATH=1 nix-prefetch-url $i | tail -n 1) \
+  | perl -e 'while (&lt;>) { if (/(href|HREF)="([^"]*.bz2)"/) { print "$ENV{'i'}$2\n"; }; }' \
+  | sort > tarballs-7.4.list
+</screen>
+  <filename>extra.list</filename> contains libraries that aren’t part of X.org proper, but are closely related to it, such as <literal>libxcb</literal>. <filename>old.list</filename> contains some packages that were removed from X.org, but are still needed by some people or by other packages (such as <varname>imake</varname>).
+ </para>
+
+ <para>
+  If the expression for a package requires derivation attributes that the generator cannot figure out automatically (say, <varname>patches</varname> or a <varname>postInstall</varname> hook), you should modify <filename>pkgs/servers/x11/xorg/overrides.nix</filename>.
+ </para>
+</section>

doc/builders/special.xml

@@ -0,0 +1,10 @@
+<chapter xmlns="http://docbook.org/ns/docbook"
+         xmlns:xi="http://www.w3.org/2001/XInclude"
+         xml:id="chap-special">
+ <title>Special builders</title>
+ <para>
+  This chapter describes several special builders.
+ </para>
+ <xi:include href="special/fhs-environments.xml" />
+ <xi:include href="special/mkshell.xml" />
+</chapter>

doc/builders/special/fhs-environments.xml

@@ -0,0 +1,122 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xmlns:xi="http://www.w3.org/2001/XInclude"
+         xml:id="sec-fhs-environments">
+ <title>buildFHSUserEnv</title>
+
+ <para>
+  <function>buildFHSUserEnv</function> provides a way to build and run FHS-compatible lightweight sandboxes. It creates an isolated root with bound <filename>/nix/store</filename>, so its footprint in terms of disk space needed is quite small. This allows one to run software which is hard or unfeasible to patch for NixOS -- 3rd-party source trees with FHS assumptions, games distributed as tarballs, software with integrity checking and/or external self-updated binaries. It uses Linux namespaces feature to create temporary lightweight environments which are destroyed after all child processes exit, without root user rights requirement. Accepted arguments are:
+ </para>
+
+ <variablelist>
+  <varlistentry>
+   <term>
+    <literal>name</literal>
+   </term>
+   <listitem>
+    <para>
+     Environment name.
+    </para>
+   </listitem>
+  </varlistentry>
+  <varlistentry>
+   <term>
+    <literal>targetPkgs</literal>
+   </term>
+   <listitem>
+    <para>
+     Packages to be installed for the main host's architecture (i.e. x86_64 on x86_64 installations). Along with libraries binaries are also installed.
+    </para>
+   </listitem>
+  </varlistentry>
+  <varlistentry>
+   <term>
+    <literal>multiPkgs</literal>
+   </term>
+   <listitem>
+    <para>
+     Packages to be installed for all architectures supported by a host (i.e. i686 and x86_64 on x86_64 installations). Only libraries are installed by default.
+    </para>
+   </listitem>
+  </varlistentry>
+  <varlistentry>
+   <term>
+    <literal>extraBuildCommands</literal>
+   </term>
+   <listitem>
+    <para>
+     Additional commands to be executed for finalizing the directory structure.
+    </para>
+   </listitem>
+  </varlistentry>
+  <varlistentry>
+   <term>
+    <literal>extraBuildCommandsMulti</literal>
+   </term>
+   <listitem>
+    <para>
+     Like <literal>extraBuildCommands</literal>, but executed only on multilib architectures.
+    </para>
+   </listitem>
+  </varlistentry>
+  <varlistentry>
+   <term>
+    <literal>extraOutputsToInstall</literal>
+   </term>
+   <listitem>
+    <para>
+     Additional derivation outputs to be linked for both target and multi-architecture packages.
+    </para>
+   </listitem>
+  </varlistentry>
+  <varlistentry>
+   <term>
+    <literal>extraInstallCommands</literal>
+   </term>
+   <listitem>
+    <para>
+     Additional commands to be executed for finalizing the derivation with runner script.
+    </para>
+   </listitem>
+  </varlistentry>
+  <varlistentry>
+   <term>
+    <literal>runScript</literal>
+   </term>
+   <listitem>
+    <para>
+     A command that would be executed inside the sandbox and passed all the command line arguments. It defaults to <literal>bash</literal>.
+    </para>
+   </listitem>
+  </varlistentry>
+ </variablelist>
+
+ <para>
+  One can create a simple environment using a <literal>shell.nix</literal> like that:
+ </para>
+
+<programlisting><![CDATA[
+{ pkgs ? import <nixpkgs> {} }:
+
+(pkgs.buildFHSUserEnv {
+  name = "simple-x11-env";
+  targetPkgs = pkgs: (with pkgs;
+    [ udev
+      alsaLib
+    ]) ++ (with pkgs.xorg;
+    [ libX11
+      libXcursor
+      libXrandr
+    ]);
+  multiPkgs = pkgs: (with pkgs;
+    [ udev
+      alsaLib
+    ]);
+  runScript = "bash";
+}).env
+]]></programlisting>
+
+ <para>
+  Running <literal>nix-shell</literal> would then drop you into a shell with these libraries and binaries available. You can use this to run closed-source applications which expect FHS structure without hassles: simply change <literal>runScript</literal> to the application path, e.g. <filename>./bin/start.sh</filename> -- relative paths are supported.
+ </para>
+</section>

doc/builders/special/mkshell.xml

@@ -0,0 +1,24 @@
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xmlns:xi="http://www.w3.org/2001/XInclude"
+         xml:id="sec-pkgs-mkShell">
+ <title>pkgs.mkShell</title>
+
+ <para>
+  <function>pkgs.mkShell</function> is a special kind of derivation that is only useful when using it combined with <command>nix-shell</command>. It will in fact fail to instantiate when invoked with <command>nix-build</command>.
+ </para>
+
+ <section xml:id="sec-pkgs-mkShell-usage">
+  <title>Usage</title>
+
+<programlisting><![CDATA[
+{ pkgs ? import <nixpkgs> {} }:
+pkgs.mkShell {
+  # this will make all the build inputs from hello and gnutar
+  # available to the shell environment
+  inputsFrom = with pkgs; [ hello gnutar ];
+  buildInputs = [ pkgs.gnumake ];
+}
+]]></programlisting>
+ </section>
+</section>

doc/builders/trivial-builders.xml

@@ -0,0 +1,90 @@
+<chapter xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xmlns:xi="http://www.w3.org/2001/XInclude"
+         xml:id="chap-trivial-builders">
+ <title>Trivial builders</title>
+ <para>
+  Nixpkgs provides a couple of functions that help with building derivations. The most important one, <function>stdenv.mkDerivation</function>, has already been documented above. The following functions wrap <function>stdenv.mkDerivation</function>, making it easier to use in certain cases.
+ </para>
+ <variablelist>
+  <varlistentry xml:id="trivial-builder-runCommand">
+   <term>
+    <literal>runCommand</literal>
+   </term>
+   <listitem>
+    <para>
+     This takes three arguments, <literal>name</literal>, <literal>env</literal>, and <literal>buildCommand</literal>. <literal>name</literal> is just the name that Nix will append to the store path in the same way that <literal>stdenv.mkDerivation</literal> uses its <literal>name</literal> attribute. <literal>env</literal> is an attribute set specifying environment variables that will be set for this derivation. These attributes are then passed to the wrapped <literal>stdenv.mkDerivation</literal>. <literal>buildCommand</literal> specifies the commands that will be run to create this derivation. Note that you will need to create <literal>$out</literal> for Nix to register the command as successful.
+    </para>
+    <para>
+     An example of using <literal>runCommand</literal> is provided below.
+    </para>
+<programlisting>
+(import &lt;nixpkgs&gt; {}).runCommand "my-example" {} ''
+  echo My example command is running
+
+  mkdir $out
+
+  echo I can write data to the Nix store > $out/message
+
+  echo I can also run basic commands like:
+
+  echo ls
+  ls
+
+  echo whoami
+  whoami
+
+  echo date
+  date
+''
+</programlisting>
+   </listitem>
+  </varlistentry>
+  <varlistentry xml:id="trivial-builder-runCommandCC">
+   <term>
+    <literal>runCommandCC</literal>
+   </term>
+   <listitem>
+    <para>
+     This works just like <literal>runCommand</literal>. The only difference is that it also provides a C compiler in <literal>buildCommand</literal>’s environment. To minimize your dependencies, you should only use this if you are sure you will need a C compiler as part of running your command.
+    </para>
+   </listitem>
+  </varlistentry>
+  <varlistentry xml:id="trivial-builder-runCommandLocal">
+   <term>
+    <literal>runCommandLocal</literal>
+   </term>
+   <listitem>
+    <para>
+     Variant of <literal>runCommand</literal> that forces the derivation to be built locally, it is not substituted. This is intended for very cheap commands (&lt;1s execution time). It saves on the network roundrip and can speed up a build.
+    </para>
+    <note><para>
+      This sets <link xlink:href="https://nixos.org/nix/manual/#adv-attr-allowSubstitutes"><literal>allowSubstitutes</literal> to <literal>false</literal></link>, so only use <literal>runCommandLocal</literal> if you are certain the user will always have a builder for the <literal>system</literal> of the derivation. This should be true for most trivial use cases (e.g. just copying some files to a different location or adding symlinks), because there the <literal>system</literal> is usually the same as <literal>builtins.currentSystem</literal>.
+    </para></note>
+   </listitem>
+  </varlistentry>
+  <varlistentry xml:id="trivial-builder-writeText">
+   <term>
+    <literal>writeTextFile</literal>, <literal>writeText</literal>, <literal>writeTextDir</literal>, <literal>writeScript</literal>, <literal>writeScriptBin</literal>
+   </term>
+   <listitem>
+    <para>
+     These functions write <literal>text</literal> to the Nix store. This is useful for creating scripts from Nix expressions. <literal>writeTextFile</literal> takes an attribute set and expects two arguments, <literal>name</literal> and <literal>text</literal>. <literal>name</literal> corresponds to the name used in the Nix store path. <literal>text</literal> will be the contents of the file. You can also set <literal>executable</literal> to true to make this file have the executable bit set.
+    </para>
+    <para>
+     Many more commands wrap <literal>writeTextFile</literal> including <literal>writeText</literal>, <literal>writeTextDir</literal>, <literal>writeScript</literal>, and <literal>writeScriptBin</literal>. These are convenience functions over <literal>writeTextFile</literal>.
+    </para>
+   </listitem>
+  </varlistentry>
+  <varlistentry xml:id="trivial-builder-symlinkJoin">
+   <term>
+    <literal>symlinkJoin</literal>
+   </term>
+   <listitem>
+    <para>
+     This can be used to put many derivations into the same directory structure. It works by creating a new derivation and adding symlinks to each of the paths listed. It expects two arguments, <literal>name</literal>, and <literal>paths</literal>. <literal>name</literal> is the name used in the Nix store path for the created derivation. <literal>paths</literal> is a list of paths that will be symlinked. These paths can be to Nix store derivations or any other subdirectory contained within.
+    </para>
+   </listitem>
+  </varlistentry>
+ </variablelist>
+</chapter>

doc/contributing.md

@@ -1,10 +0,0 @@
-# Contributing to Nixpkgs {#part-contributing}
-
-```{=include=} chapters
-contributing/quick-start.chapter.md
-contributing/coding-conventions.chapter.md
-contributing/submitting-changes.chapter.md
-contributing/vulnerability-roundup.chapter.md
-contributing/reviewing-contributions.chapter.md
-contributing/contributing-to-documentation.chapter.md
-```