expat: patch for CVE-2015-1283 from Mozilla

(Cherry-picked from commit fba4a950685023bc792422665b2dbe9934ebc9c6.)

.gitignore

@@ -3,16 +3,8 @@
 .*.swp
 .*.swo
 result
-result-*
-/doc/NEWS.html
-/doc/NEWS.txt
-/doc/manual.html
-/doc/manual.pdf
+doc/NEWS.html
+doc/NEWS.txt
+doc/manual.html
+doc/manual.pdf
 .version-suffix
-
-.DS_Store
-
-/pkgs/applications/kde-apps-*/tmp/
-/pkgs/development/libraries/kde-frameworks-*/tmp/
-/pkgs/development/libraries/qt-5/*/tmp/
-/pkgs/desktops/plasma-*/tmp/

.travis.yml

@@ -1,6 +1,5 @@
 language: python
 python: "3.4"
-sudo: required
 before_install: ./maintainers/scripts/travis-nox-review-pr.sh nix
 install: ./maintainers/scripts/travis-nox-review-pr.sh nox
 script: ./maintainers/scripts/travis-nox-review-pr.sh build

.version

@@ -1 +1 @@
-16.03
+14.04

CONTRIBUTING.md

@@ -1,12 +0,0 @@
-# How to contribute
-
-## Opening issues
-
-* Make sure you have a [GitHub account](https://github.com/signup/free)
-* [Submit an issue](https://github.com/NixOS/nixpkgs/issues) - assuming one does not already exist.
-  * Clearly describe the issue including steps to reproduce when it is a bug.
-  * Include information what version of nixpkgs and Nix are you using (nixos-version or git revision).
-
-## Submitting changes
-
-See the nixpkgs manual for details on how to [Submit changes to nixpkgs](http://hydra.nixos.org/job/nixpkgs/trunk/manual/latest/download-by-type/doc/manual#chap-submitting-changes).

README.md

@@ -1,44 +1,10 @@
-[<img src="http://nixos.org/logo/nixos-hires.png" width="500px" alt="logo" />](https://nixos.org/nixos)
-
-[![Build Status](https://travis-ci.org/NixOS/nixpkgs.svg?branch=master)](https://travis-ci.org/NixOS/nixpkgs)
-[![Issue Stats](http://www.issuestats.com/github/nixos/nixpkgs/badge/pr)](http://www.issuestats.com/github/nixos/nixpkgs)
-[![Issue Stats](http://www.issuestats.com/github/nixos/nixpkgs/badge/issue)](http://www.issuestats.com/github/nixos/nixpkgs)
-
-Nixpkgs is a collection of packages for the [Nix](https://nixos.org/nix/) package
-manager. It is periodically built and tested by the [hydra](http://hydra.nixos.org/)
-build daemon as so-called channels. To get channel information via git, add
-[nixpkgs-channels](https://github.com/NixOS/nixpkgs-channels.git) as a remote:
-
-```
-% git remote add channels git://github.com/NixOS/nixpkgs-channels.git
-```
-
-For stability and maximum binary package support, it is recommended to maintain
-custom changes on top of one of the channels, e.g. `nixos-15.09` for the latest
-release and `nixos-unstable` for the latest successful build of master:
-
-```
-% git remote update channels
-% git rebase channels/nixos-15.09
-```
-
-For pull-requests, please rebase onto nixpkgs `master`.
-
-[NixOS](https://nixos.org/nixos/) linux distribution source code is located inside
-`nixos/` folder.
-
-* [NixOS installation instructions](https://nixos.org/nixos/manual/#ch-installation)
-* [Documentation (Nix Expression Language chapter)](https://nixos.org/nix/manual/#ch-expression-language)
-* [Manual (How to write packages for Nix)](https://nixos.org/nixpkgs/manual/)
-* [Manual (NixOS)](https://nixos.org/nixos/manual/)
-* [Continuous package builds for unstable/master](https://hydra.nixos.org/jobset/nixos/trunk-combined)
-* [Continuous package builds for 14.12 release](https://hydra.nixos.org/jobset/nixos/release-14.12)
-* [Continuous package builds for 15.09 release](https://hydra.nixos.org/jobset/nixos/release-15.09)
-* [Tests for unstable/master](https://hydra.nixos.org/job/nixos/trunk-combined/tested#tabs-constituents)
-* [Tests for 14.12 release](https://hydra.nixos.org/job/nixos/release-14.12/tested#tabs-constituents)
-* [Tests for 15.09 release](https://hydra.nixos.org/job/nixos/release-15.09/tested#tabs-constituents)
-
-Communication:
+Nixpkgs is a collection of packages for [Nix](http://nixos.org/nix/) package
+manager. Nixpkgs also includes [NixOS](http://nixos.org/nixos/) linux distribution source code.
 
+* [NixOS installation instructions](http://nixos.org/nixos/manual/#installing-nixos)
+* [Manual (How to write packages for Nix)](http://nixos.org/nixpkgs/manual/)
+* [Manual (NixOS)](http://nixos.org/nixos/manual/)
+* [Continuous build](http://hydra.nixos.org/jobset/nixos/trunk-combined)
+* [Tests](http://hydra.nixos.org/job/nixos/trunk-combined/tested#tabs-constituents)
 * [Mailing list](http://lists.science.uu.nl/mailman/listinfo/nix-dev)
 * [IRC - #nixos on freenode.net](irc://irc.freenode.net/#nixos)

default.nix

@@ -1,8 +1,6 @@
-let requiredVersion = "1.10"; in
+if ! builtins ? nixVersion || builtins.compareVersions "1.6" builtins.nixVersion == 1 then
 
-if ! builtins ? nixVersion || builtins.compareVersions requiredVersion builtins.nixVersion == 1 then
-
-  abort "This version of Nixpkgs requires Nix >= ${requiredVersion}, please upgrade! See https://nixos.org/wiki/How_to_update_when_Nix_is_too_old_to_evaluate_Nixpkgs"
+  abort "This version of Nixpkgs requires Nix >= 1.6, please upgrade!"
 
 else
 

doc/Makefile

@@ -0,0 +1,41 @@
+# You may need to override this.
+docbookxsl = $(HOME)/.nix-profile/xml/xsl/docbook
+dblatex = dblatex
+
+XMLLINT = xmllint --catalogs
+XSLTPROC = xsltproc --catalogs \
+ --param section.autolabel 1 \
+ --param section.label.includes.component.label 1 \
+ --param html.stylesheet \'style.css\' \
+ --param xref.with.number.and.title 1 \
+ --param toc.section.depth 3 \
+ --param admon.style \'\' \
+ --param callout.graphics.extension \'.gif\'
+
+NEWS_OPTS = \
+ --stringparam generate.toc "article nop" \
+ --stringparam section.autolabel.max.depth 0 \
+ --stringparam header.rule 0
+
+all: NEWS.html NEWS.txt manual.html manual.pdf
+
+NEWS.html: release-notes.xml
+	$(XSLTPROC) --nonet --xinclude --output $@ $(NEWS_OPTS) \
+	  $(docbookxsl)/xhtml/docbook.xsl release-notes.xml
+
+NEWS.txt: release-notes.xml
+	$(XSLTPROC) --nonet --xinclude quote-literals.xsl release-notes.xml | \
+	  $(XSLTPROC) --nonet --output $@.tmp.html $(NEWS_OPTS) \
+	  $(docbookxsl)/xhtml/docbook.xsl -
+	LANG=en_US w3m -dump $@.tmp.html > $@
+	rm $@.tmp.html
+
+manual.html: *.xml
+	$(XSLTPROC) --nonet --xinclude --output manual.html \
+	  $(docbookxsl)/xhtml/docbook.xsl manual.xml
+
+manual.pdf: *.xml
+	$(dblatex) \
+	  -P doc.collab.show=0 \
+	  -P latex.output.revhistory=0 \
+	  manual.xml

doc/coding-conventions.xml

@@ -5,7 +5,7 @@
 <title>Coding conventions</title>
 
 
-<section xml:id="sec-syntax"><title>Syntax</title>
+<section><title>Syntax</title>
 
 <itemizedlist>
 
@@ -169,8 +169,8 @@ stdenv.mkDerivation { ...
 args: with args; <replaceable>...</replaceable>
 </programlisting>
 
-  or
-
+  or 
+  
 <programlisting>
 { stdenv, fetchurl, perl, ... }: <replaceable>...</replaceable>
 </programlisting>
@@ -207,7 +207,7 @@ args.stdenv.mkDerivation (args // {
 </section>
 
 
-<section xml:id="sec-package-naming"><title>Package naming</title>
+<section><title>Package naming</title>
 
 <para>In Nixpkgs, there are generally three different names associated with a package:
 
@@ -256,12 +256,6 @@ bound to the variable name <varname>e2fsprogs</varname> in
   a package named <literal>hello-svn</literal> by
   <command>nix-env</command>.</para></listitem>
 
-  <listitem><para>If package is fetched from git's commit then
-  the version part of the name <emphasis>must</emphasis> be the date of that 
-  (fetched) commit. The date must be in <literal>"YYYY-MM-DD"</literal> format.
-  Also add <literal>"git"</literal> to the name - e.g.,
-  <literal>"pkgname-git-2014-09-23"</literal>.</para></listitem>
-
   <listitem><para>Dashes in the package name should be preserved
   in new variable names, rather than converted to underscores
   (which was convention up to around 2013 and most names
@@ -292,7 +286,7 @@ dashes between words — not in camel case.  For instance, it should be
 <filename>allPackages.nix</filename> or
 <filename>AllPackages.nix</filename>.</para>
 
-<section xml:id="sec-hierarchy"><title>Hierarchy</title>
+<section><title>Hierarchy</title>
 
 <para>Each package should be stored in its own directory somewhere in
 the <filename>pkgs/</filename> tree, i.e. in
@@ -451,17 +445,12 @@ splitting up an existing category.</para>
     </listitem>
   </varlistentry>
   <varlistentry>
-    <term>If it’s a <emphasis>desktop environment</emphasis>:</term>
+    <term>If it’s a <emphasis>desktop environment</emphasis>
+    (including <emphasis>window managers</emphasis>):</term>
     <listitem>
       <para><filename>desktops</filename> (e.g. <filename>kde</filename>, <filename>gnome</filename>, <filename>enlightenment</filename>)</para>
     </listitem>
   </varlistentry>
-  <varlistentry>
-    <term>If it’s a <emphasis>window manager</emphasis>:</term>
-    <listitem>
-      <para><filename>applications/window-managers</filename> (e.g. <filename>awesome</filename>, <filename>compiz</filename>, <filename>stumpwm</filename>)</para>
-    </listitem>
-  </varlistentry>
   <varlistentry>
     <term>If it’s an <emphasis>application</emphasis>:</term>
     <listitem>
@@ -609,57 +598,6 @@ evaluate correctly.</para>
 </section>
 
 </section>
-<section xml:id="sec-sources"><title>Fetching Sources</title>
-  <para>There are multiple ways to fetch a package source in nixpkgs. The
-    general guidline is that you should package sources with a high degree of
-    availability. Right now there is only one fetcher which has mirroring
-    support and that is <literal>fetchurl</literal>. Note that you should also
-    prefer protocols which have a corresponding proxy environment variable.
-  </para>
-  <para>You can find many source fetch helpers in <literal>pkgs/build-support/fetch*</literal>.
-  </para>
-  <para>In the file <literal>pkgs/top-level/all-packages.nix</literal> you can
-    find fetch helpers, these have names on the form
-    <literal>fetchFrom*</literal>. The intention of these are to provide
-    snapshot fetches but using the same api as some of the version controlled
-    fetchers from <literal>pkgs/build-support/</literal>. As an example going
-    from bad to good:
-    <itemizedlist>
-      <listitem>
-        <para>Uses <literal>git://</literal> which won't be proxied.
-<programlisting>
-src = fetchgit {
-  url = "git://github.com/NixOS/nix.git";
-  rev = "1f795f9f44607cc5bec70d1300150bfefcef2aae";
-  sha256 = "1cw5fszffl5pkpa6s6wjnkiv6lm5k618s32sp60kvmvpy7a2v9kg";
-}
-</programlisting>
-        </para>
-      </listitem>
-      <listitem>
-        <para>This is ok, but an archive fetch will still be faster.
-<programlisting>
-src = fetchgit {
-  url = "https://github.com/NixOS/nix.git";
-  rev = "1f795f9f44607cc5bec70d1300150bfefcef2aae";
-  sha256 = "1cw5fszffl5pkpa6s6wjnkiv6lm5k618s32sp60kvmvpy7a2v9kg";
-}
-</programlisting>
-        </para>
-      </listitem>
-      <listitem>
-        <para>Fetches a snapshot archive and you get the rev you want.
-<programlisting>
-src = fetchFromGitHub {
-  owner = "NixOS";
-  repo = "nix";
-  rev = "1f795f9f44607cc5bec70d1300150bfefcef2aae";
-  sha256 = "04yri911rj9j19qqqn6m82266fl05pz98inasni0vxr1cf1gdgv9";
-}
-</programlisting>
-        </para>
-      </listitem>
-    </itemizedlist>
-  </para>
-</section>
+
+
 </chapter>

doc/contributing.xml

@@ -2,19 +2,20 @@
          xmlns:xlink="http://www.w3.org/1999/xlink"
          xml:id="chap-contributing">
 
-<title>Contributing to this documentation</title>
+<title>Contributing</title>
 
-<para>The DocBook sources of the Nixpkgs manual are in the <filename
-xlink:href="https://github.com/NixOS/nixpkgs/tree/master/doc">doc</filename>
-subdirectory of the Nixpkgs repository. If you make modifications to
-the manual, it's important to build it before committing. You can do that as follows:
+<para>If you make modifications to the manual, it's important to build the manual before contributing:</para>
 
-<screen>
-$ cd /path/to/nixpkgs
-$ nix-build doc
-</screen>
+<orderedlist>
 
-If the build succeeds, the manual will be in
-<filename>./result/share/doc/nixpkgs/manual.html</filename>.</para>
+  <listitem><para><command>$ git clone git://github.com/NixOS/nixpkgs.git</command></para></listitem>
+
+  <listitem><para><command>$ cd nixpkgs/pkgs/top-level</command></para></listitem>
+
+  <listitem><para><command>$ nix-build -A tarball release.nix</command></para></listitem>
+  
+  <listitem><para>Inside the built derivation you shall see <literal>manual/index.html</literal> file.</para></listitem>
+
+</orderedlist>
 
 </chapter>

doc/default.nix

@@ -1,61 +0,0 @@
-with import ./.. { };
-with lib;
-
-stdenv.mkDerivation {
-  name = "nixpkgs-manual";
-
-  sources = sourceFilesBySuffices ./. [".xml"];
-
-  buildInputs = [ pandoc libxml2 libxslt ];
-
-  xsltFlags = ''
-    --param section.autolabel 1
-    --param section.label.includes.component.label 1
-    --param html.stylesheet 'style.css'
-    --param xref.with.number.and.title 1
-    --param toc.section.depth 3
-    --param admon.style '''
-    --param callout.graphics.extension '.gif'
-  '';
-
-  buildCommand = ''
-    {
-      echo "<chapter xmlns=\"http://docbook.org/ns/docbook\""
-      echo "         xmlns:xlink=\"http://www.w3.org/1999/xlink\""
-      echo "         xml:id=\"users-guide-to-the-haskell-infrastructure\">"
-      echo ""
-      echo "<title>User's Guide to the Haskell Infrastructure</title>"
-      echo ""
-      pandoc ${./haskell-users-guide.md} -w docbook | \
-        sed -e 's|<ulink url=|<link xlink:href=|' \
-            -e 's|</ulink>|</link>|' \
-            -e 's|<sect. id=|<section xml:id=|' \
-            -e 's|</sect[0-9]>|</section>|'
-      echo ""
-      echo "</chapter>"
-    } >haskell-users-guide.xml
-
-    ln -s "$sources/"*.xml .
-
-    echo ${nixpkgsVersion} > .version
-
-    xmllint --noout --nonet --xinclude --noxincludenode \
-      --relaxng ${docbook5}/xml/rng/docbook/docbook.rng \
-      manual.xml
-
-    dst=$out/share/doc/nixpkgs
-    mkdir -p $dst
-    xsltproc $xsltFlags --nonet --xinclude \
-      --output $dst/manual.html \
-      ${docbook5_xsl}/xml/xsl/docbook/xhtml/docbook.xsl \
-      ./manual.xml
-
-    cp ${./style.css} $dst/style.css
-
-    mkdir -p $dst/images/callouts
-    cp "${docbook5_xsl}/xml/xsl/docbook/images/callouts/"*.gif $dst/images/callouts/
-
-    mkdir -p $out/nix-support
-    echo "doc manual $dst manual.html" >> $out/nix-support/hydra-build-products
-  '';
-}

doc/functions.xml

@@ -1,287 +0,0 @@
-<chapter xmlns="http://docbook.org/ns/docbook"
-	 xmlns:xlink="http://www.w3.org/1999/xlink"
-	 xml:id="chap-functions">
-
-<title>Functions reference</title>
-
-<para>
-  The nixpkgs repository has several utility functions to manipulate Nix expressions.
-</para>
-
-<section xml:id="sec-pkgs-overridePackages">
-  <title>pkgs.overridePackages</title>
-
-  <para>
-    This function inside the nixpkgs expression (<varname>pkgs</varname>)
-    can be used to override the set of packages itself.
-  </para>
-  <para>
-    Warning: this function is expensive and must not be used from within
-    the nixpkgs repository.
-  </para>
-  <para>
-    Example usage:
-
-    <programlisting>let
-  pkgs = import &lt;nixpkgs&gt; {};
-  newpkgs = pkgs.overridePackages (self: super: {
-    foo = super.foo.override { ... };
-  };
-in ...</programlisting>
-  </para>
-
-  <para>
-    The resulting <varname>newpkgs</varname> will have the new <varname>foo</varname>
-    expression, and all other expressions depending on <varname>foo</varname> will also
-    use the new <varname>foo</varname> expression.
-  </para>
-
-  <para>
-    The behavior of this function is similar to <link 
-    linkend="sec-modify-via-packageOverrides">config.packageOverrides</link>.
-  </para>
-
-  <para>
-    The <varname>self</varname> parameter refers to the final package set with the
-    applied overrides. Using this parameter may lead to infinite recursion if not
-    used consciously.
-  </para>
-
-  <para>
-    The <varname>super</varname> parameter refers to the old package set.
-    It's equivalent to <varname>pkgs</varname> in the above example.
-  </para>
-
-</section>
-
-<section xml:id="sec-pkg-override">
-  <title>&lt;pkg&gt;.override</title>
-
-  <para>
-    The function <varname>override</varname> is usually available for all the
-    derivations in the nixpkgs expression (<varname>pkgs</varname>).
-  </para>
-  <para>
-    It is used to override the arguments passed to a function.
-  </para>
-  <para>
-    Example usages:
-
-    <programlisting>pkgs.foo.override { arg1 = val1; arg2 = val2; ... }</programlisting>
-    <programlisting>pkgs.overridePackages (self: super: {
-  foo = super.foo.override { barSupport = true ; };
-})</programlisting>
-    <programlisting>mypkg = pkgs.callPackage ./mypkg.nix {
-  mydep = pkgs.mydep.override { ... };
-})</programlisting>
-  </para>
-
-  <para>
-    In the first example, <varname>pkgs.foo</varname> is the result of a function call
-    with some default arguments, usually a derivation.
-    Using <varname>pkgs.foo.override</varname> will call the same function with
-    the given new arguments.
-  </para>
-
-</section>
-
-<section xml:id="sec-pkg-overrideDerivation">
-  <title>&lt;pkg&gt;.overrideDerivation</title>
-
-  <para>
-    The function <varname>overrideDerivation</varname> is usually available for all the
-    derivations in the nixpkgs expression (<varname>pkgs</varname>).
-  </para> 
-  <para>
-    It is used to create a new derivation by overriding the attributes of
-    the original derivation according to the given function.
-  </para>
-
-  <para>
-    Example usage:
-
-    <programlisting>mySed = pkgs.gnused.overrideDerivation (oldAttrs: {
-  name = "sed-4.2.2-pre";
-  src = fetchurl {
-    url = ftp://alpha.gnu.org/gnu/sed/sed-4.2.2-pre.tar.bz2;
-    sha256 = "11nq06d131y4wmf3drm0yk502d2xc6n5qy82cg88rb9nqd2lj41k";
-  };
-  patches = [];
-});</programlisting>
-  </para>
-
-  <para>
-    In the above example, the name, src and patches of the derivation
-    will be overridden, while all other attributes will be retained from the
-    original derivation.
-  </para>
-
-  <para>
-    The argument <varname>oldAttrs</varname> is used to refer to the attribute set of
-    the original derivation.
-  </para>
-
-</section>
-
-<section xml:id="sec-lib-makeOverridable">
-  <title>lib.makeOverridable</title>
-
-  <para>
-    The function <varname>lib.makeOverridable</varname> is used to make the result
-    of a function easily customizable. This utility only makes sense for functions
-    that accept an argument set and return an attribute set.
-  </para>
-
-  <para>
-    Example usage:
-
-    <programlisting>f = { a, b }: { result = a+b; }
-c = lib.makeOverridable f { a = 1; b = 2; }</programlisting>
-
-  </para>
-
-  <para>
-    The variable <varname>c</varname> is the value of the <varname>f</varname> function
-    applied with some default arguments. Hence the value of <varname>c.result</varname>
-    is <literal>3</literal>, in this example.
-  </para>
-
-  <para>
-    The variable <varname>c</varname> however also has some additional functions, like
-    <link linkend="sec-pkg-override">c.override</link> which can be used to
-    override the default arguments. In this example the value of
-    <varname>(c.override { a = 4; }).result</varname> is 6.
-  </para>
-
-</section>
-
-
-<section xml:id="sec-fhs-environments">
-  <title>buildFHSChrootEnv/buildFHSUserEnv</title>
-
-  <para>
-    <function>buildFHSChrootEnv</function> and
-    <function>buildFHSUserEnv</function> provide a way to build and run
-    FHS-compatible lightweight sandboxes. They get their own isolated root with
-    binded <filename>/nix/store</filename>, so their 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.
-  </para>
-
-  <para>
-    <function>buildFHSChrootEnv</function> allows to create persistent
-    environments, which can be constructed, deconstructed and entered by
-    multiple users at once. A downside is that it requires
-    <literal>root</literal> access for both those who create and destroy and
-    those who enter it. It can be useful to create environments for daemons that
-    one can enter and observe.
-  </para>
-
-  <para>
-    <function>buildFHSUserEnv</function> uses Linux namespaces feature to create
-    temporary lightweight environments which are destroyed after all child
-    processes exit. It does not require root access, and can be useful to create
-    sandboxes and wrap applications.
-  </para>
-
-  <para>
-    Those functions both rely on <function>buildFHSEnv</function>, which creates
-    an actual directory structure given a list of necessary packages and extra
-    build commands.
-    <function>buildFHSChrootEnv</function> and <function>buildFHSUserEnv</function>
-    both accept those arguments which are passed to
-    <function>buildFHSEnv</function>:
-  </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).</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).</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>extraBuildCommandsMulti</literal>, but
-    executed only on multilib architectures.</para></listitem>
-    </varlistentry>
-  </variablelist>
-
-  <para>
-    Additionally, <function>buildFHSUserEnv</function> accepts
-    <literal>runScript</literal> parameter, which is a command that would be
-    executed inside the sandbox and passed all the command line arguments. It
-    default to <literal>bash</literal>.
-  </para>
-  <para>
-    It also uses <literal>CHROOTENV_EXTRA_BINDS</literal> environment variable
-    for binding extra directories in the sandbox to outside places. The format of
-    the variable is <literal>/mnt=test-mnt:/data</literal>, where
-    <literal>/mnt</literal> would be mounted as <literal>/test-mnt</literal>
-    and <literal>/data</literal> would be mounted as <literal>/data</literal>.
-    <literal>extraBindMounts</literal> array argument to
-    <function>buildFHSUserEnv</function> function is prepended to this variable.
-    Latter entries take priority if defined several times -- i.e. in case of
-    <literal>/data=data1:/data=data2</literal> the actual bind path would be
-    <literal>/data2</literal>.
-  </para>
-  <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
-    ]) ++ (with [];
-  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>
-
-</chapter>

doc/haskell-users-guide.md

@@ -1,719 +0,0 @@
----
-title: User's Guide for Haskell in Nixpkgs
-author: Peter Simons
-date: 2015-06-01
----
-
-# How to install Haskell packages
-
-Nixpkgs distributes build instructions for all Haskell packages registered on
-[Hackage](http://hackage.haskell.org/), but strangely enough normal Nix package
-lookups don't seem to discover any of them, except for the default version of ghc, cabal-install, and stack:
-
-    $ nix-env -i alex
-    error: selector ‘alex’ matches no derivations
-    $ nix-env -qa ghc
-    ghc-7.10.2
-
-The Haskell package set is not registered in the top-level namespace because it
-is *huge*. If all Haskell packages were visible to these commands, then
-name-based search/install operations would be much slower than they are now. We
-avoided that by keeping all Haskell-related packages in a separate attribute
-set called `haskellPackages`, which the following command will list:
-
-    $ nix-env -f "<nixpkgs>" -qaP -A haskellPackages
-    haskellPackages.a50         a50-0.5
-    haskellPackages.abacate     haskell-abacate-0.0.0.0
-    haskellPackages.abcBridge   haskell-abcBridge-0.12
-    haskellPackages.afv         afv-0.1.1
-    haskellPackages.alex        alex-3.1.4
-    haskellPackages.Allure      Allure-0.4.101.1
-    haskellPackages.alms        alms-0.6.7
-    [... some 8000 entries omitted  ...]
-
-To install any of those packages into your profile, refer to them by their
-attribute path (first column):
-
-    $ nix-env -f "<nixpkgs>" -iA haskellPackages.Allure ...
-
-The attribute path of any Haskell packages corresponds to the name of that
-particular package on Hackage: the package `cabal-install` has the attribute
-`haskellPackages.cabal-install`, and so on. (Actually, this convention causes
-trouble with packages like `3dmodels` and `4Blocks`, because these names are
-invalid identifiers in the Nix language. The issue of how to deal with these
-rare corner cases is currently unresolved.)
-
-Haskell packages who's Nix name (second column) begins with a `haskell-` prefix
-are packages that provide a library whereas packages without that prefix
-provide just executables. Libraries may provide executables too, though: the
-package `haskell-pandoc`, for example, installs both a library and an
-application. You can install and use Haskell executables just like any other
-program in Nixpkgs, but using Haskell libraries for development is a bit
-trickier and we'll address that subject in great detail in section [How to
-create a development environment].
-
-Attribute paths are deterministic inside of Nixpkgs, but the path necessary to
-reach Nixpkgs varies from system to system. We dodged that problem by giving
-`nix-env` an explicit `-f "<nixpkgs>"` parameter, but if you call `nix-env`
-without that flag, then chances are the invocation fails:
-
-    $ nix-env -iA haskellPackages.cabal-install
-    error: attribute ‘haskellPackages’ in selection path
-           ‘haskellPackages.cabal-install’ not found
-
-On NixOS, for example, Nixpkgs does *not* exist in the top-level namespace by
-default. To figure out the proper attribute path, it's easiest to query for the
-path of a well-known Nixpkgs package, i.e.:
-
-    $ nix-env -qaP coreutils
-    nixos.coreutils  coreutils-8.23
-
-If your system responds like that (most NixOS installations will), then the
-attribute path to `haskellPackages` is `nixos.haskellPackages`. Thus, if you
-want to use `nix-env` without giving an explicit `-f` flag, then that's the way
-to do it:
-
-    $ nix-env -qaP -A nixos.haskellPackages
-    $ nix-env -iA nixos.haskellPackages.cabal-install
-
-Our current default compiler is GHC 7.10.x and the `haskellPackages` set
-contains packages built with that particular version. Nixpkgs contains the
-latest major release of every GHC since 6.10.4, however, and there is a whole
-family of package sets available that defines Hackage packages built with each
-of those compilers, too:
-
-    $ nix-env -f "<nixpkgs>" -qaP -A haskell.packages.ghc6123
-    $ nix-env -f "<nixpkgs>" -qaP -A haskell.packages.ghc763
-
-The name `haskellPackages` is really just a synonym for
-`haskell.packages.ghc7102`, because we prefer that package set internally and
-recommend it to our users as their default choice, but ultimately you are free
-to compile your Haskell packages with any GHC version you please. The following
-command displays the complete list of available compilers:
-
-    $ nix-env -f "<nixpkgs>" -qaP -A haskell.compiler
-    haskell.compiler.ghc6104        ghc-6.10.4
-    haskell.compiler.ghc6123        ghc-6.12.3
-    haskell.compiler.ghc704         ghc-7.0.4
-    haskell.compiler.ghc722         ghc-7.2.2
-    haskell.compiler.ghc742         ghc-7.4.2
-    haskell.compiler.ghc763         ghc-7.6.3
-    haskell.compiler.ghc784         ghc-7.8.4
-    haskell.compiler.ghc7102        ghc-7.10.2
-    haskell.compiler.ghcHEAD        ghc-7.11.20150402
-    haskell.compiler.ghcNokinds     ghc-nokinds-7.11.20150704
-    haskell.compiler.ghcjs          ghcjs-0.1.0
-    haskell.compiler.jhc            jhc-0.8.2
-    haskell.compiler.uhc            uhc-1.1.9.0
-
-We have no package sets for `jhc` or `uhc` yet, unfortunately, but for every
-version of GHC listed above, there exists a package set based on that compiler.
-Also, the attributes `haskell.compiler.ghcXYC` and
-`haskell.packages.ghcXYC.ghc` are synonymous for the sake of convenience.
-
-# How to create a development environment
-
-## How to install a compiler
-
-A simple development environment consists of a Haskell compiler and the tool
-`cabal-install`, and we saw in section [How to install Haskell packages] how
-you can install those programs into your user profile:
-
-    $ nix-env -f "<nixpkgs>" -iA haskellPackages.ghc haskellPackages.cabal-install
-
-Instead of the default package set `haskellPackages`, you can also use the more
-precise name `haskell.compiler.ghc7102`, which has the advantage that it refers
-to the same GHC version regardless of what Nixpkgs considers "default" at any
-given time.
-
-Once you've made those tools available in `$PATH`, it's possible to build
-Hackage packages the same way people without access to Nix do it all the time:
-
-    $ cabal get lens-4.11 && cd lens-4.11
-    $ cabal install -j --dependencies-only
-    $ cabal configure
-    $ cabal build
-
-If you enjoy working with Cabal sandboxes, then that's entirely possible too:
-just execute the command
-
-    $ cabal sandbox init
-
-before installing the required dependencies.
-
-The `nix-shell` utility makes it easy to switch to a different compiler
-version; just enter the Nix shell environment with the command
-
-    $ nix-shell -p haskell.compiler.ghc784
-
-to bring GHC 7.8.4 into `$PATH`. Re-running `cabal configure` switches your
-build to use that compiler instead. If you're working on a project that doesn't
-depend on any additional system libraries outside of GHC, then it's sufficient
-even to run the `cabal configure` command inside of the shell:
-
-    $ nix-shell -p haskell.compiler.ghc784 --command "cabal configure"
-
-Afterwards, all other commands like `cabal build` work just fine in any shell
-environment, because the configure phase recorded the absolute paths to all
-required tools like GHC in its build configuration inside of the `dist/`
-directory. Please note, however, that `nix-collect-garbage` can break such an
-environment because the Nix store paths created by `nix-shell` aren't "alive"
-anymore once `nix-shell` has terminated. If you find that your Haskell builds
-no longer work after garbage collection, then you'll have to re-run `cabal
-configure` inside of a new `nix-shell` environment.
-
-## How to install a compiler with libraries
-
-GHC expects to find all installed libraries inside of its own `lib` directory.
-This approach works fine on traditional Unix systems, but it doesn't work for
-Nix, because GHC's store path is immutable once it's built. We cannot install
-additional libraries into that location. As a consequence, our copies of GHC
-don't know any packages except their own core libraries, like `base`,
-`containers`, `Cabal`, etc.
-
-We can register additional libraries to GHC, however, using a special build
-function called `ghcWithPackages`. That function expects one argument: a
-function that maps from an attribute set of Haskell packages to a list of
-packages, which determines the libraries known to that particular version of
-GHC. For example, the Nix expression `ghcWithPackages (pkgs: [pkgs.mtl])`
-generates a copy of GHC that has the `mtl` library registered in addition to
-its normal core packages:
-
-    $ nix-shell -p "haskellPackages.ghcWithPackages (pkgs: [pkgs.mtl])"
-
-    [nix-shell:~]$ ghc-pkg list mtl
-    /nix/store/zy79...-ghc-7.10.2/lib/ghc-7.10.2/package.conf.d:
-        mtl-2.2.1
-
-This function allows users to define their own development environment by means
-of an override. After adding the following snippet to `~/.nixpkgs/config.nix`,
-
-    {
-      packageOverrides = super: let self = super.pkgs; in
-      {
-        myHaskellEnv = self.haskell.packages.ghc7102.ghcWithPackages
-                         (haskellPackages: with haskellPackages; [
-                           # libraries
-                           arrows async cgi criterion
-                           # tools
-                           cabal-install haskintex
-                         ]);
-      };
-    }
-
-it's possible to install that compiler with `nix-env -f "<nixpkgs>" -iA
-myHaskellEnv`. If you'd like to switch that development environment to a
-different version of GHC, just replace the `ghc7102` bit in the previous
-definition with the appropriate name. Of course, it's also possible to define
-any number of these development environments! (You can't install two of them
-into the same profile at the same time, though, because that would result in
-file conflicts.)
-
-The generated `ghc` program is a wrapper script that re-directs the real
-GHC executable to use a new `lib` directory --- one that we specifically
-constructed to contain all those packages the user requested:
-
-    $ cat $(type -p ghc)
-    #! /nix/store/xlxj...-bash-4.3-p33/bin/bash -e
-    export NIX_GHC=/nix/store/19sm...-ghc-7.10.2/bin/ghc
-    export NIX_GHCPKG=/nix/store/19sm...-ghc-7.10.2/bin/ghc-pkg
-    export NIX_GHC_DOCDIR=/nix/store/19sm...-ghc-7.10.2/share/doc/ghc/html
-    export NIX_GHC_LIBDIR=/nix/store/19sm...-ghc-7.10.2/lib/ghc-7.10.2
-    exec /nix/store/j50p...-ghc-7.10.2/bin/ghc "-B$NIX_GHC_LIBDIR" "$@"
-
-The variables `$NIX_GHC`, `$NIX_GHCPKG`, etc. point to the *new* store path
-`ghcWithPackages` constructed specifically for this environment. The last line
-of the wrapper script then executes the real `ghc`, but passes the path to the
-new `lib` directory using GHC's `-B` flag.
-
-The purpose of those environment variables is to work around an impurity in the
-popular [ghc-paths](http://hackage.haskell.org/package/ghc-paths) library. That
-library promises to give its users access to GHC's installation paths. Only,
-the library can't possible know that path when it's compiled, because the path
-GHC considers its own is determined only much later, when the user configures
-it through `ghcWithPackages`. So we [patched
-ghc-paths](https://github.com/NixOS/nixpkgs/blob/master/pkgs/development/haskell-modules/ghc-paths-nix.patch)
-to return the paths found in those environment variables at run-time rather
-than trying to guess them at compile-time.
-
-To make sure that mechanism works properly all the time, we recommend that you
-set those variables to meaningful values in your shell environment, too, i.e.
-by adding the following code to your `~/.bashrc`:
-
-    if type >/dev/null 2>&1 -p ghc; then
-      eval "$(egrep ^export "$(type -p ghc)")"
-    fi
-
-If you are certain that you'll use only one GHC environment which is located in
-your user profile, then you can use the following code, too, which has the
-advantage that it doesn't contain any paths from the Nix store, i.e. those
-settings always remain valid even if a `nix-env -u` operation updates the GHC
-environment in your profile:
-
-    if [ -e ~/.nix-profile/bin/ghc ]; then
-      export NIX_GHC="$HOME/.nix-profile/bin/ghc"
-      export NIX_GHCPKG="$HOME/.nix-profile/bin/ghc-pkg"
-      export NIX_GHC_DOCDIR="$HOME/.nix-profile/share/doc/ghc/html"
-      export NIX_GHC_LIBDIR="$HOME/.nix-profile/lib/ghc-$($NIX_GHC --numeric-version)"
-    fi
-
-## How to install a compiler with libraries, hoogle and documentation indexes
-
-If you plan to use your environment for interactive programming, not just
-compiling random Haskell code, you might want to replace `ghcWithPackages` in
-all the listings above with `ghcWithHoogle`.
-
-This environment generator not only produces an environment with GHC and all
-the specified libraries, but also generates a `hoogle` and `haddock` indexes
-for all the packages, and provides a wrapper script around `hoogle` binary that
-uses all those things. A precise name for this thing would be
-"`ghcWithPackagesAndHoogleAndDocumentationIndexes`", which is, regrettably, too
-long and scary.
-
-For example, installing the following environment
-
-    {
-      packageOverrides = super: let self = super.pkgs; in
-      {
-        myHaskellEnv = self.haskellPackages.ghcWithHoogle
-                         (haskellPackages: with haskellPackages; [
-                           # libraries
-                           arrows async cgi criterion
-                           # tools
-                           cabal-install haskintex
-                         ]);
-      };
-    }
-
-allows one to browse module documentation index [not too dissimilar to
-this](https://downloads.haskell.org/~ghc/latest/docs/html/libraries/index.html)
-for all the specified packages and their dependencies by directing a browser of
-choice to `~/.nix-profiles/share/doc/hoogle/index.html` (or
-`/run/current-system/sw/share/doc/hoogle/index.html` in case you put it in
-`environment.systemPackages` in NixOS).
-
-After you've marveled enough at that try adding the following to your
-`~/.ghc/ghci.conf`
-
-    :def hoogle \s -> return $ ":! hoogle search -cl --count=15 \"" ++ s ++ "\""
-    :def doc \s -> return $ ":! hoogle search -cl --info \"" ++ s ++ "\""
-
-and test it by typing into `ghci`:
-
-    :hoogle a -> a
-    :doc a -> a
-
-Be sure to note the links to `haddock` files in the output. With any modern and
-properly configured terminal emulator you can just click those links to
-navigate there.
-
-Finally, you can run
-
-    hoogle server -p 8080
-
-and navigate to http://localhost:8080/ for your own local
-[Hoogle](https://www.haskell.org/hoogle/). Note, however, that Firefox and
-possibly other browsers disallow navigation from `http:` to `file:` URIs for
-security reasons, which might be quite an inconvenience. See [this
-page](http://kb.mozillazine.org/Links_to_local_pages_do_not_work) for
-workarounds.
-
-
-## How to create ad hoc environments for `nix-shell`
-
-The easiest way to create an ad hoc development environment is to run
-`nix-shell` with the appropriate GHC environment given on the command-line:
-
-    nix-shell -p "haskellPackages.ghcWithPackages (pkgs: with pkgs; [mtl pandoc])"
-
-For more sophisticated use-cases, however, it's more convenient to save the
-desired configuration in a file called `shell.nix` that looks like this:
-
-    { nixpkgs ? import <nixpkgs> {}, compiler ? "ghc7102" }:
-    let
-      inherit (nixpkgs) pkgs;
-      ghc = pkgs.haskell.packages.${compiler}.ghcWithPackages (ps: with ps; [
-              monad-par mtl
-            ]);
-    in
-    pkgs.stdenv.mkDerivation {
-      name = "my-haskell-env-0";
-      buildInputs = [ ghc ];
-      shellHook = "eval $(egrep ^export ${ghc}/bin/ghc)";
-    }
-
-Now run `nix-shell` --- or even `nix-shell --pure` --- to enter a shell
-environment that has the appropriate compiler in `$PATH`. If you use `--pure`,
-then add all other packages that your development environment needs into the
-`buildInputs` attribute. If you'd like to switch to a different compiler
-version, then pass an appropriate `compiler` argument to the expression, i.e.
-`nix-shell --argstr compiler ghc784`.
-
-If you need such an environment because you'd like to compile a Hackage package
-outside of Nix --- i.e. because you're hacking on the latest version from Git
----, then the package set provides suitable nix-shell environments for you
-already! Every Haskell package has an `env` attribute that provides a shell
-environment suitable for compiling that particular package. If you'd like to
-hack the `lens` library, for example, then you just have to check out the
-source code and enter the appropriate environment:
-
-      $ cabal get lens-4.11 && cd lens-4.11
-      Downloading lens-4.11...
-      Unpacking to lens-4.11/
-
-      $ nix-shell "<nixpkgs>" -A haskellPackages.lens.env
-      [nix-shell:/tmp/lens-4.11]$
-
-At point, you can run `cabal configure`, `cabal build`, and all the other
-development commands. Note that you need `cabal-install` installed in your
-`$PATH` already to use it here --- the `nix-shell` environment does not provide
-it.
-
-# How to create Nix builds for your own private Haskell packages
-
-If your own Haskell packages have build instructions for Cabal, then you can
-convert those automatically into build instructions for Nix using the
-`cabal2nix` utility, which you can install into your profile by running
-`nix-env -i cabal2nix`.
-
-## How to build a stand-alone project
-
-For example, let's assume that you're working on a private project called
-`foo`. To generate a Nix build expression for it, change into the project's
-top-level directory and run the command:
-
-    $ cabal2nix . >foo.nix
-
-Then write the following snippet into a file called `default.nix`:
-
-    { nixpkgs ? import <nixpkgs> {}, compiler ? "ghc7102" }:
-    nixpkgs.pkgs.haskell.packages.${compiler}.callPackage ./foo.nix { }
-
-Finally, store the following code in a file called `shell.nix`:
-
-    { nixpkgs ? import <nixpkgs> {}, compiler ? "ghc7102" }:
-    (import ./default.nix { inherit nixpkgs compiler; }).env
-
-At this point, you can run `nix-build` to have Nix compile your project and
-install it into a Nix store path. The local directory will contain a symlink
-called `result` after `nix-build` returns that points into that location. Of
-course, passing the flag `--argstr compiler ghc763` allows switching the build
-to any version of GHC currently supported.
-
-Furthermore, you can call `nix-shell` to enter an interactive development
-environment in which you can use `cabal configure` and `cabal build` to develop
-your code. That environment will automatically contain a proper GHC derivation
-with all the required libraries registered as well as all the system-level
-libraries your package might need.
-
-If your package does not depend on any system-level libraries, then it's
-sufficient to run
-
-    $ nix-shell --command "cabal configure"
-
-once to set up your build. `cabal-install` determines the absolute paths to all
-resources required for the build and writes them into a config file in the
-`dist/` directory. Once that's done, you can run `cabal build` and any other
-command for that project even outside of the `nix-shell` environment. This
-feature is particularly nice for those of us who like to edit their code with
-an IDE, like Emacs' `haskell-mode`, because it's not necessary to start Emacs
-inside of nix-shell just to make it find out the necessary settings for
-building the project; `cabal-install` has already done that for us.
-
-If you want to do some quick-and-dirty hacking and don't want to bother setting
-up a `default.nix` and `shell.nix` file manually, then you can use the
-`--shell` flag offered by `cabal2nix` to have it generate a stand-alone
-`nix-shell` environment for you. With that feature, running
-
-    $ cabal2nix --shell . >shell.nix
-    $ nix-shell --command "cabal configure"
-
-is usually enough to set up a build environment for any given Haskell package.
-You can even use that generated file to run `nix-build`, too:
-
-    $ nix-build shell.nix
-
-## How to build projects that depend on each other
-
-If you have multiple private Haskell packages that depend on each other, then
-you'll have to register those packages in the Nixpkgs set to make them visible
-for the dependency resolution performed by `callPackage`. First of all, change
-into each of your projects top-level directories and generate a `default.nix`
-file with `cabal2nix`:
-
-    $ cd ~/src/foo && cabal2nix . >default.nix
-    $ cd ~/src/bar && cabal2nix . >default.nix
-
-Then edit your `~/.nixpkgs/config.nix` file to register those builds in the
-default Haskell package set:
-
-      {
-        packageOverrides = super: let self = super.pkgs; in
-        {
-          haskellPackages = super.haskellPackages.override {
-            overrides = self: super: {
-              foo = self.callPackage ../src/foo {};
-              bar = self.callPackage ../src/bar {};
-            };
-          };
-        };
-      }
-
-Once that's accomplished, `nix-env -f "<nixpkgs>" -qA haskellPackages` will
-show your packages like any other package from Hackage, and you can build them
-
-    $ nix-build "<nixpkgs>" -A haskellPackages.foo
-
-or enter an interactive shell environment suitable for building them:
-
-    $ nix-shell "<nixpkgs>" -A haskellPackages.bar.env
-
-# Miscellaneous Topics
-
-## How to build with profiling enabled
-
-Every Haskell package set takes a function called `overrides` that you can use
-to manipulate the package as much as you please. One useful application of this
-feature is to replace the default `mkDerivation` function with one that enables
-library profiling for all packages. To accomplish that, add configure the
-following snippet in your `~/.nixpkgs/config.nix` file:
-
-    {
-      packageOverrides = super: let self = super.pkgs; in
-      {
-        profiledHaskellPackages = self.haskellPackages.override {
-          overrides = self: super: {
-            mkDerivation = args: super.mkDerivation (args // {
-              enableLibraryProfiling = true;
-            });
-          };
-        };
-      };
-    }
-
-Then, replace instances of `haskellPackages` in the `cabal2nix`-generated
-`default.nix` or `shell.nix` files with `profiledHaskellPackages`.
-
-## How to override package versions in a compiler-specific package set
-
-Nixpkgs provides the latest version of
-[`ghc-events`](http://hackage.haskell.org/package/ghc-events), which is 0.4.4.0
-at the time of this writing. This is fine for users of GHC 7.10.x, but GHC
-7.8.4 cannot compile that binary. Now, one way to solve that problem is to
-register an older version of `ghc-events` in the 7.8.x-specific package set.
-The first step is to generate Nix build instructions with `cabal2nix`:
-
-    $ cabal2nix cabal://ghc-events-0.4.3.0 >~/.nixpkgs/ghc-events-0.4.3.0.nix
-
-Then add the override in `~/.nixpkgs/config.nix`:
-
-    {
-      packageOverrides = super: let self = super.pkgs; in
-      {
-        haskell = super.haskell // {
-          packages = super.haskell.packages // {
-            ghc784 = super.haskell.packages.ghc784.override {
-              overrides = self: super: {
-                ghc-events = self.callPackage ./ghc-events-0.4.3.0.nix {};
-              };
-            };
-          };
-        };
-      };
-    }
-
-This code is a little crazy, no doubt, but it's necessary because the intuitive
-version
-
-    haskell.packages.ghc784 = super.haskell.packages.ghc784.override {
-      overrides = self: super: {
-        ghc-events = self.callPackage ./ghc-events-0.4.3.0.nix {};
-      };
-    };
-
-doesn't do what we want it to: that code replaces the `haskell` package set in
-Nixpkgs with one that contains only one entry,`packages`, which contains only
-one entry `ghc784`. This override loses the `haskell.compiler` set, and it
-loses the `haskell.packages.ghcXYZ` sets for all compilers but GHC 7.8.4. To
-avoid that problem, we have to perform the convoluted little dance from above,
-iterating over each step in hierarchy.
-
-Once it's accomplished, however, we can install a variant of `ghc-events`
-that's compiled with GHC 7.8.4:
-
-    nix-env -f "<nixpkgs>" -iA haskell.packages.ghc784.ghc-events
-
-Unfortunately, it turns out that this build fails again while executing the
-test suite! Apparently, the release archive on Hackage is missing some data
-files that the test suite requires, so we cannot run it. We accomplish that by
-re-generating the Nix expression with the `--no-check` flag:
-
-    $ cabal2nix --no-check cabal://ghc-events-0.4.3.0 >~/.nixpkgs/ghc-events-0.4.3.0.nix
-
-Now the builds succeeds.
-
-Of course, in the concrete example of `ghc-events` this whole exercise is not
-an ideal solution, because `ghc-events` can analyze the output emitted by any
-version of GHC later than 6.12 regardless of the compiler version that was used
-to build the `ghc-events' executable, so strictly speaking there's no reason to
-prefer one built with GHC 7.8.x in the first place. However, for users who
-cannot use GHC 7.10.x at all for some reason, the approach of downgrading to an
-older version might be useful.
-
-## How to recover from GHC's infamous non-deterministic library ID bug
-
-GHC and distributed build farms don't get along well:
-
-    https://ghc.haskell.org/trac/ghc/ticket/4012
-
-When you see an error like this one
-
-    package foo-0.7.1.0 is broken due to missing package
-    text-1.2.0.4-98506efb1b9ada233bb5c2b2db516d91
-
-then you have to download and re-install `foo` and all its dependents from
-scratch:
-
-    # nix-store -q --referrers /nix/store/*-haskell-text-1.2.0.4 \
-      | xargs -L 1 nix-store --repair-path --option binary-caches http://hydra.nixos.org
-
-If you're using additional Hydra servers other than `hydra.nixos.org`, then it
-might be necessary to purge the local caches that store data from those
-machines to disable these binary channels for the duration of the previous
-command, i.e. by running:
-
-    rm /nix/var/nix/binary-cache-v3.sqlite
-    rm /nix/var/nix/manifests/*
-    rm /nix/var/nix/channel-cache/*
-
-## Builds on Darwin fail with `math.h` not found
-
-Users of GHC on Darwin have occasionally reported that builds fail, because the
-compiler complains about a missing include file:
-
-    fatal error: 'math.h' file not found
-
-The issue has been discussed at length in [ticket
-6390](https://github.com/NixOS/nixpkgs/issues/6390), and so far no good
-solution has been proposed. As a work-around, users who run into this problem
-can configure the environment variables
-
-    export NIX_CFLAGS_COMPILE="-idirafter /usr/include"
-    export NIX_CFLAGS_LINK="-L/usr/lib"
-
-in their `~/.bashrc` file to avoid the compiler error.
-
-## Using Stack together with Nix
-
-    --  While building package zlib-0.5.4.2 using:
-      runhaskell -package=Cabal-1.22.4.0 -clear-package-db [... lots of flags ...]
-    Process exited with code: ExitFailure 1
-    Logs have been written to: /home/foo/src/stack-ide/.stack-work/logs/zlib-0.5.4.2.log
-
-    Configuring zlib-0.5.4.2...
-    Setup.hs: Missing dependency on a foreign library:
-    * Missing (or bad) header file: zlib.h
-    This problem can usually be solved by installing the system package that
-    provides this library (you may need the "-dev" version). If the library is
-    already installed but in a non-standard location then you can use the flags
-    --extra-include-dirs= and --extra-lib-dirs= to specify where it is.
-    If the header file does exist, it may contain errors that are caught by the C
-    compiler at the preprocessing stage. In this case you can re-run configure
-    with the verbosity flag -v3 to see the error messages.
-
-When you run the build inside of the nix-shell environment, the system
-is configured to find libz.so without any special flags -- the compiler
-and linker "just know" how to find it. Consequently, Cabal won't record
-any search paths for libz.so in the package description, which means
-that the package works fine inside of nix-shell, but once you leave the
-shell the shared object can no longer be found. That issue is by no
-means specific to Stack: you'll have that problem with any other
-Haskell package that's built inside of nix-shell but run outside of that
-environment.
-
-I suppose we could try to remedy the issue by wrapping `stack` or
-`cabal` with a script that tries to find those kind of implicit search
-paths and makes them explicit on the "cabal configure" command line. I
-don't think anyone is working on that subject yet, though, because the
-problem doesn't seem so bad in practice.
-
-You can remedy that issue in several ways. First of all, run
-
-    $ nix-build --no-out-link "<nixpkgs>" -A zlib
-    /nix/store/alsvwzkiw4b7ip38l4nlfjijdvg3fvzn-zlib-1.2.8
-
-to find out the store path of the system's zlib library. Now, you can
-
-1) add that path (plus a "/lib" suffix) to your $LD_LIBRARY_PATH
-   environment variable to make sure your system linker finds libz.so
-   automatically. It's no pretty solution, but it will work.
-
-2) As a variant of (1), you can also install any number of system
-   libraries into your user's profile (or some other profile) and point
-   $LD_LIBRARY_PATH to that profile instead, so that you don't have to
-   list dozens of those store paths all over the place.
-
-3) The solution I prefer is to call stack with an appropriate
-   --extra-lib-dirs flag like so:
-
-    $ stack --extra-lib-dirs=/nix/store/alsvwzkiw4b7ip38l4nlfjijdvg3fvzn-zlib-1.2.8/lib build
-
-   Typically, you'll need --extra-include-dirs as well. It's possible
-   to add those flag to the project's "stack.yaml" or your user's
-   global "~/.stack/global/stack.yaml" file so that you don't have to
-   specify them manually every time.
-
-   The same thing applies to `cabal configure`, of course, if you're
-   building with `cabal-install` instead of Stack.
-
-## Creating statically linked binaries
-
-There are two levels of static linking. The first option is to configure the
-build with the Cabal flag `--disable-executable-dynamic`. In Nix expressions,
-this can be achieved by setting the attribute:
-
-    enableSharedExecutables = false;
-
-That gives you a binary with statically linked Haskell libraries and
-dynamically linked system libraries.
-
-To link both Haskell libraries and system libraries statically, the additional
-flags `--ghc-option=-optl=-static --ghc-option=-optl=-pthread` need to be used.
-In Nix, this is accomplished with:
-
-    configureFlags = [ "--ghc-option=-optl=-static" "--ghc-option=-optl=-pthread" ];
-
-It's important to realize, however, that most system libraries in Nix are built
-as shared libraries only, i.e. there is just no static library available that
-Cabal could link!
-
-
-# Other resources
-
-- The Youtube video [Nix Loves Haskell](https://www.youtube.com/watch?v=BsBhi_r-OeE)
-  provides an introduction into Haskell NG aimed at beginners. The slides are
-  available at http://cryp.to/nixos-meetup-3-slides.pdf and also -- in a form
-  ready for cut & paste -- at
-  https://github.com/NixOS/cabal2nix/blob/master/doc/nixos-meetup-3-slides.md.
-
-- Another Youtube video is [Escaping Cabal Hell with Nix](https://www.youtube.com/watch?v=mQd3s57n_2Y),
-  which discusses the subject of Haskell development with Nix but also provides
-  a basic introduction to Nix as well, i.e. it's suitable for viewers with
-  almost no prior Nix experience.
-
-- Oliver Charles wrote a very nice [Tutorial how to develop Haskell packages with Nix](http://wiki.ocharles.org.uk/Nix).
-
-- The *Journey into the Haskell NG infrastructure* series of postings
-  describe the new Haskell infrastructure in great detail:
-
-    - [Part 1](http://lists.science.uu.nl/pipermail/nix-dev/2015-January/015591.html)
-      explains the differences between the old and the new code and gives
-      instructions how to migrate to the new setup.
-
-    - [Part 2](http://lists.science.uu.nl/pipermail/nix-dev/2015-January/015608.html)
-      looks in-depth at how to tweak and configure your setup by means of
-      overrides.
-
-    - [Part 3](http://lists.science.uu.nl/pipermail/nix-dev/2015-April/016912.html)
-      describes the infrastructure that keeps the Haskell package set in Nixpkgs
-      up-to-date.

doc/language-support.xml

@@ -1,4 +1,3 @@
-
 <chapter xmlns="http://docbook.org/ns/docbook"
          xmlns:xlink="http://www.w3.org/1999/xlink"
          xml:id="chap-language-support">
@@ -14,7 +13,7 @@ in Nixpkgs to easily build packages for other programming languages,
 such as Perl or Haskell.  These are described in this chapter.</para>
 
 
-<section xml:id="sec-language-perl"><title>Perl</title>
+<section xml:id="ssec-language-perl"><title>Perl</title>
 
 <para>Nixpkgs provides a function <varname>buildPerlPackage</varname>,
 a generic package builder function for any Perl package that has a
@@ -109,7 +108,7 @@ a <varname>preConfigure</varname> hook to generate a configuration
 file used by <filename>Makefile.PL</filename>:
 
 <programlisting>
-{ buildPerlPackage, fetchurl, db }:
+{buildPerlPackage, fetchurl, db}:
 
 buildPerlPackage rec {
   name = "BerkeleyDB-0.36";
@@ -152,7 +151,7 @@ ClassC3Componentised = buildPerlPackage rec {
 
 </para>
 
-<section xml:id="ssec-generation-from-CPAN"><title>Generation from CPAN</title>
+<section><title>Generation from CPAN</title>
 
 <para>Nix expressions for Perl packages can be generated (almost)
 automatically from CPAN.  This is done by the program
@@ -192,631 +191,49 @@ you need it.</para>
 </section>
 
 
-<section xml:id="sec-python"><title>Python</title>
-
-<para>
-  Currently supported interpreters are <varname>python26</varname>, <varname>python27</varname>,
-  <varname>python32</varname>, <varname>python33</varname>, <varname>python34</varname>
-  and <varname>pypy</varname>.
-</para>
-
-<para>
-  <varname>python</varname> is an alias of <varname>python27</varname> and <varname>python3</varname> is an alias of <varname>python34</varname>.
-</para>
-
-<para>
-  <varname>python26</varname> and <varname>python27</varname> do not include modules that require
-  external dependencies (to reduce dependency bloat). Following modules need to be added as
-  <varname>buildInput</varname> explicitly:
-</para>
-
-<itemizedlist>
-  <listitem><para><varname>python.modules.bsddb</varname></para></listitem>
-  <listitem><para><varname>python.modules.curses</varname></para></listitem>
-  <listitem><para><varname>python.modules.curses_panel</varname></para></listitem>
-  <listitem><para><varname>python.modules.crypt</varname></para></listitem>
-  <listitem><para><varname>python.modules.gdbm</varname></para></listitem>
-  <listitem><para><varname>python.modules.sqlite3</varname></para></listitem>
-  <listitem><para><varname>python.modules.tkinter</varname></para></listitem>
-  <listitem><para><varname>python.modules.readline</varname></para></listitem>
-</itemizedlist>
-
-<para>For convenience <varname>python27Full</varname> and <varname>python26Full</varname>
-are provided with all modules included.</para>
+<section><title>Python</title>
 
 <para>
   Python packages that
-  use <link xlink:href="http://pypi.python.org/pypi/setuptools/"><literal>setuptools</literal></link> or <literal>distutils</literal>,
-  can be built using the <varname>buildPythonPackage</varname> function as documented below.
+  use <link xlink:href="http://pypi.python.org/pypi/setuptools/"><literal>setuptools</literal></link>,
+  which many Python packages do nowadays, can be built very simply using
+  the <varname>buildPythonPackage</varname> function.  This function is
+  implemented
+  in <link xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/development/python-modules/generic/default.nix"><filename>pkgs/development/python-modules/generic/default.nix</filename></link>
+  and works similarly to <varname>buildPerlPackage</varname>. (See
+  <xref linkend="ssec-language-perl"/> for details.)
 </para>
 
 <para>
- All packages depending on any Python interpreter get appended <varname>$out/${python.libPrefix}/site-packages</varname>
- to <literal>$PYTHONPATH</literal> if such directory exists.
-</para>
+  Python packages that use <varname>buildPythonPackage</varname> are
+  defined
+  in <link xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/top-level/python-packages.nix"><filename>pkgs/top-level/python-packages.nix</filename></link>.
+  Most of them are simple.  For example:
 
-<variablelist>
-  <title>
-     Useful attributes on interpreters packages:
-  </title>
-
-  <varlistentry>
-    <term><varname>libPrefix</varname></term>
-    <listitem><para>
-        Name of the folder in <literal>${python}/lib/</literal> for corresponding interpreter.
-    </para></listitem>
-  </varlistentry>
-
-  <varlistentry>
-    <term><varname>interpreter</varname></term>
-    <listitem><para>
-        Alias for <literal>${python}/bin/${executable}.</literal>
-    </para></listitem>
-  </varlistentry>
-
-  <varlistentry>
-    <term><varname>buildEnv</varname></term>
-    <listitem><para>
-        Function to build python interpreter environments with extra packages bundled together.
-        See <xref linkend="ssec-python-build-env" /> for usage and documentation.
-    </para></listitem>
-  </varlistentry>
-
-  <varlistentry>
-    <term><varname>sitePackages</varname></term>
-    <listitem><para>
-      Alias for <literal>lib/${libPrefix}/site-packages</literal>.
-    </para></listitem>
-  </varlistentry>
-
-  <varlistentry>
-    <term><varname>executable</varname></term>
-    <listitem><para>
-      Name of the interpreter executable, ie <literal>python3.4</literal>.
-    </para></listitem>
-  </varlistentry>
-
-</variablelist>
-<section xml:id="ssec-build-python-package"><title><varname>buildPythonPackage</varname> function</title>
-
-  <para>
-  The function is implemented in <link xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/development/python-modules/generic/default.nix">
-  <filename>pkgs/development/python-modules/generic/default.nix</filename></link>.
-  Example usage:
-
-<programlisting language="nix">
+  <programlisting>
 twisted = buildPythonPackage {
   name = "twisted-8.1.0";
 
-  src = pkgs.fetchurl {
+  src = fetchurl {
     url = http://tmrc.mit.edu/mirror/twisted/Twisted/8.1/Twisted-8.1.0.tar.bz2;
     sha256 = "0q25zbr4xzknaghha72mq57kh53qw1bf8csgp63pm9sfi72qhirl";
   };
 
-  propagatedBuildInputs = [ self.ZopeInterface ];
+  propagatedBuildInputs = [ pkgs.ZopeInterface ];
 
   meta = {
     homepage = http://twistedmatrix.com/;
     description = "Twisted, an event-driven networking engine written in Python";
-    license = stdenv.lib.licenses.mit;
+    license = "MIT";
   };
 };
-</programlisting>
-
-  Most of Python packages that use <varname>buildPythonPackage</varname> are defined
-  in <link xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/top-level/python-packages.nix"><filename>pkgs/top-level/python-packages.nix</filename></link>
-  and generated for each python interpreter separately into attribute sets <varname>python26Packages</varname>,
-  <varname>python27Packages</varname>, <varname>python32Packages</varname>, <varname>python33Packages</varname>,
-  <varname>python34Packages</varname> and <varname>pypyPackages</varname>.
-  </para>
-
-  <para>
-    <function>buildPythonPackage</function> mainly does four things:
-
-    <orderedlist>
-      <listitem><para>
-        In the <varname>configurePhase</varname>, it patches
-        <literal>setup.py</literal> to always include setuptools before
-        distutils for monkeypatching machinery to take place.
-      </para></listitem>
-
-      <listitem><para>
-        In the <varname>buildPhase</varname>, it calls
-        <literal>${python.interpreter} setup.py build ...</literal>
-      </para></listitem>
-
-      <listitem><para>
-        In the <varname>installPhase</varname>, it calls
-        <literal>${python.interpreter} setup.py install ...</literal>
-      </para></listitem>
-
-      <listitem><para>
-        In the <varname>postFixup</varname> phase, <literal>wrapPythonPrograms</literal>
-        bash function is called to wrap all programs in <filename>$out/bin/*</filename>
-        directory to include <literal>$PYTHONPATH</literal> and <literal>$PATH</literal>
-        environment variables.
-      </para></listitem>
-    </orderedlist>
-  </para>
-
-  <para>By default <varname>doCheck = true</varname> is set and tests are run with
-  <literal>${python.interpreter} setup.py test</literal> command in <varname>checkPhase</varname>.</para>
-
-  <para>
-    As in Perl, dependencies on other Python packages can be specified in the
-    <varname>buildInputs</varname> and
-    <varname>propagatedBuildInputs</varname> attributes.  If something is
-    exclusively a build-time dependency, use
-    <varname>buildInputs</varname>; if it’s (also) a runtime dependency,
-    use <varname>propagatedBuildInputs</varname>.
-  </para>
-
-  <para>
-    By default <varname>meta.platforms</varname> is set to the same value
-    as the interpreter unless overriden otherwise.
-  </para>
-
-  <variablelist>
-    <title>
-      <varname>buildPythonPackage</varname> parameters
-      (all parameters from <varname>mkDerivation</varname> function are still supported)
-    </title>
-
-    <varlistentry>
-      <term><varname>namePrefix</varname></term>
-      <listitem><para>
-        Prepended text to <varname>${name}</varname> parameter.
-        Defaults to <literal>"python3.3-"</literal> for Python 3.3, etc. Set it to
-        <literal>""</literal>
-        if you're packaging an application or a command line tool.
-      </para></listitem>
-    </varlistentry>
-
-    <varlistentry>
-      <term><varname>disabled</varname></term>
-      <listitem><para>
-        If <varname>true</varname>, package is not build for
-        particular python interpreter version. Grep around
-        <filename>pkgs/top-level/python-packages.nix</filename>
-        for examples.
-      </para></listitem>
-    </varlistentry>
-
-    <varlistentry>
-      <term><varname>setupPyInstallFlags</varname></term>
-      <listitem><para>
-        List of flags passed to <command>setup.py install</command> command.
-      </para></listitem>
-    </varlistentry>
-
-    <varlistentry>
-      <term><varname>setupPyBuildFlags</varname></term>
-      <listitem><para>
-        List of flags passed to <command>setup.py build</command> command.
-      </para></listitem>
-    </varlistentry>
-
-    <varlistentry>
-      <term><varname>pythonPath</varname></term>
-      <listitem><para>
-        List of packages to be added into <literal>$PYTHONPATH</literal>.
-        Packages in <varname>pythonPath</varname> are not propagated into user environment
-        (contrary to <varname>propagatedBuildInputs</varname>).
-      </para></listitem>
-    </varlistentry>
-
-    <varlistentry>
-      <term><varname>preShellHook</varname></term>
-      <listitem><para>
-        Hook to execute commands before <varname>shellHook</varname>.
-      </para></listitem>
-    </varlistentry>
-
-    <varlistentry>
-      <term><varname>postShellHook</varname></term>
-      <listitem><para>
-        Hook to execute commands after <varname>shellHook</varname>.
-      </para></listitem>
-    </varlistentry>
-
-    <varlistentry>
-      <term><varname>distutilsExtraCfg</varname></term>
-      <listitem><para>
-        Extra lines passed to <varname>[easy_install]</varname> section of
-        <filename>distutils.cfg</filename> (acts as global setup.cfg
-        configuration).
-      </para></listitem>
-    </varlistentry>
-
-    <varlistentry>
-      <term><varname>makeWrapperArgs</varname></term>
-      <listitem><para>
-        A list of strings. Arguments to be passed to
-        <varname>makeWrapper</varname>, which wraps generated binaries. By
-        default, the arguments to <varname>makeWrapper</varname> set
-        <varname>PATH</varname> and <varname>PYTHONPATH</varname> environment
-        variables before calling the binary. Additional arguments here can
-        allow a developer to set environment variables which will be
-        available when the binary is run. For example,
-        <varname>makeWrapperArgs = ["--set FOO BAR" "--set BAZ QUX"]</varname>.
-      </para></listitem>
-    </varlistentry>
-
-  </variablelist>
-
-</section>
-
-<section xml:id="ssec-python-build-env"><title><function>python.buildEnv</function> function</title>
-  <para>
-    Create Python environments using low-level <function>pkgs.buildEnv</function> function. Example <filename>default.nix</filename>:
-
-<programlisting language="nix">
-<![CDATA[with import <nixpkgs> {};
-
-python.buildEnv.override {
-  extraLibs = [ pkgs.pythonPackages.pyramid ];
-  ignoreCollisions = true;
-}]]>
-</programlisting>
-
-    Running <command>nix-build</command> will create
-    <filename>/nix/store/cf1xhjwzmdki7fasgr4kz6di72ykicl5-python-2.7.8-env</filename>
-    with wrapped binaries in <filename>bin/</filename>.
-  </para>
-
-  <para>
-  You can also use <varname>env</varname> attribute to create local
-  environments with needed packages installed (somewhat comparable to
-  <literal>virtualenv</literal>). For example, with the following
-  <filename>shell.nix</filename>:
-
-<programlisting language="nix">
-<![CDATA[with import <nixpkgs> {};
-
-(python3.buildEnv.override {
-  extraLibs = with python3Packages;
-    [ numpy
-      requests
-    ];
-}).env]]>
-</programlisting>
-
-  Running <command>nix-shell</command> will drop you into a shell where
-  <command>python</command> will have specified packages in its path.
-  </para>
-
-  <variablelist>
-    <title>
-      <function>python.buildEnv</function> arguments
-    </title>
-
-    <varlistentry>
-      <term><varname>extraLibs</varname></term>
-      <listitem><para>
-        List of packages installed inside the environment.
-      </para></listitem>
-    </varlistentry>
-
-    <varlistentry>
-      <term><varname>postBuild</varname></term>
-      <listitem><para>
-        Shell command executed after the build of environment.
-      </para></listitem>
-    </varlistentry>
-
-    <varlistentry>
-      <term><varname>ignoreCollisions</varname></term>
-      <listitem><para>
-         Ignore file collisions inside the environment (default is <varname>false</varname>).
-      </para></listitem>
-    </varlistentry>
-  </variablelist>
-</section>
-
-<section xml:id="ssec-python-tools"><title>Tools</title>
-
-<para>Packages inside nixpkgs are written by hand. However many tools
-exist in community to help save time. No tool is preferred at the moment.
-</para>
-
-<itemizedlist>
-
-  <listitem><para>
-    <link xlink:href="https://github.com/proger/python2nix">python2nix</link>
-    by Vladimir Kirillov
-  </para></listitem>
-
-  <listitem><para>
-    <link xlink:href="https://github.com/garbas/pypi2nix">pypi2nix</link>
-    by Rok Garbas
-  </para></listitem>
-
-  <listitem><para>
-    <link xlink:href="https://github.com/offlinehacker/pypi2nix">pypi2nix</link>
-    by Jaka Hudoklin
-  </para></listitem>
-
-</itemizedlist>
-
-</section>
-
-<section xml:id="ssec-python-development"><title>Development</title>
-
-  <para>
-    To develop Python packages <function>buildPythonPackage</function> has
-    additional logic inside <varname>shellPhase</varname> to run
-    <command>${python.interpreter} setup.py develop</command> for the package.
-  </para>
-
-  <warning><para><varname>shellPhase</varname> is executed only if <filename>setup.py</filename>
-  exists.</para></warning>
-
-  <para>
-    Given a <filename>default.nix</filename>:
-
-<programlisting language="nix">
-<![CDATA[with import <nixpkgs> {};
-
-buildPythonPackage {
-  name = "myproject";
-
-  buildInputs = with pkgs.pythonPackages; [ pyramid ];
-
-  src = ./.;
-}]]>
-</programlisting>
-
-    Running <command>nix-shell</command> with no arguments should give you
-    the environment in which the package would be build with
-    <command>nix-build</command>.
-  </para>
-
-  <para>
-    Shortcut to setup environments with C headers/libraries and python packages:
-
-    <programlisting language="bash">$ nix-shell -p pythonPackages.pyramid zlib libjpeg git</programlisting>
-  </para>
-
-  <note><para>
-    There is a boolean value <varname>lib.inNixShell</varname> set to
-    <varname>true</varname> if nix-shell is invoked.
-  </para></note>
-
-</section>
-
-<section xml:id="ssec-python-faq"><title>FAQ</title>
-
-<variablelist>
-
-  <varlistentry>
-    <term>How to solve circular dependencies?</term>
-    <listitem><para>
-      If you have packages <varname>A</varname> and <varname>B</varname> that
-      depend on each other, when packaging <varname>B</varname> override package
-      <varname>A</varname> not to depend on <varname>B</varname> as input
-      (and also the other way around).
-    </para></listitem>
-  </varlistentry>
-
-  <varlistentry>
-    <term><varname>install_data / data_files</varname> problems resulting into <literal>error: could not create '/nix/store/6l1bvljpy8gazlsw2aw9skwwp4pmvyxw-python-2.7.8/etc': Permission denied</literal></term>
-    <listitem><para>
-      <link xlink:href="https://bitbucket.org/pypa/setuptools/issue/130/install_data-doesnt-respect-prefix">
-      Known bug in setuptools <varname>install_data</varname> does not respect --prefix</link>. Example of
-      such package using the feature is <filename>pkgs/tools/X11/xpra/default.nix</filename>. As workaround
-      install it as an extra <varname>preInstall</varname> step:
-
-      <programlisting>${python.interpreter} setup.py install_data --install-dir=$out --root=$out
-sed -i '/ = data_files/d' setup.py</programlisting>
-    </para></listitem>
-  </varlistentry>
-
-  <varlistentry>
-    <term>Rationale of non-existent global site-packages</term>
-    <listitem><para>
-      There is no need to have global site-packages in Nix. Each package has isolated
-      dependency tree and installing any python package will only populate <varname>$PATH</varname>
-      inside user environment. See <xref linkend="ssec-python-build-env" /> to create self-contained
-      interpreter with a set of packages.
-    </para></listitem>
-  </varlistentry>
-
-</variablelist>
-
-</section>
-
-
-<section xml:id="ssec-python-contrib"><title>Contributing guidelines</title>
-<para>
-  Following rules are desired to be respected:
-</para>
-
-<itemizedlist>
-
-  <listitem><para>
-    Make sure package builds for all python interpreters. Use <varname>disabled</varname> argument to
-    <function>buildPythonPackage</function> to set unsupported interpreters.
-  </para></listitem>
-
-  <listitem><para>
-    If tests need to be disabled for a package, make sure you leave a comment about reasoning.
-  </para></listitem>
-
-  <listitem><para>
-    Packages in <link xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/top-level/python-packages.nix"><filename>pkgs/top-level/python-packages.nix</filename></link>
-    are sorted quasi-alphabetically to avoid merge conflicts.
-  </para></listitem>
-
-</itemizedlist>
-
-</section>
-
-</section>
-
-
-<section xml:id="sec-language-ruby"><title>Ruby</title>
-  <para>There currently is support to bundle applications that are packaged as Ruby gems. The utility "bundix" allows you to write a <filename>Gemfile</filename>, let bundler create a <filename>Gemfile.lock</filename>, and then convert
-  this into a nix expression that contains all Gem dependencies automatically.</para>
-
-  <para>For example, to package sensu, we did:</para>
-
-<screen>
-<![CDATA[$ cd pkgs/servers/monitoring
-$ mkdir sensu
-$ cat > Gemfile
-source 'https://rubygems.org'
-gem 'sensu'
-$ bundler package --path /tmp/vendor/bundle
-$ $(nix-build '<nixpkgs>' -A bundix)/bin/bundix
-$ cat > default.nix
-{ lib, bundlerEnv, ruby }:
-
-bundlerEnv {
-  name = "sensu-0.17.1";
-
-  inherit ruby;
-  gemfile = ./Gemfile;
-  lockfile = ./Gemfile.lock;
-  gemset = ./gemset.nix;
-
-  meta = with lib; {
-    description = "A monitoring framework that aims to be simple, malleable,
-and scalable.";
-    homepage    = http://sensuapp.org/;
-    license     = with licenses; mit;
-    maintainers = with maintainers; [ theuni ];
-    platforms   = platforms.unix;
-  };
-}]]>
-</screen>
-
-<para>Please check in the <filename>Gemfile</filename>, <filename>Gemfile.lock</filename> and the <filename>gemset.nix</filename> so future updates can be run easily.
+  </programlisting>
 </para>
 
 </section>
 
-<section xml:id="sec-language-go"><title>Go</title>
 
-<para>The function <varname>buildGoPackage</varname> builds
-standard Go packages.
-</para>
-
-<example xml:id='ex-buildGoPackage'><title>buildGoPackage</title>
-<programlisting>
-net = buildGoPackage rec {
-  name = "go.net-${rev}";
-  goPackagePath = "golang.org/x/net"; <co xml:id='ex-buildGoPackage-1' />
-  subPackages = [ "ipv4" "ipv6" ]; <co xml:id='ex-buildGoPackage-2' />
-  rev = "e0403b4e005";
-  src = fetchFromGitHub {
-    inherit rev;
-    owner = "golang";
-    repo = "net";
-    sha256 = "1g7cjzw4g4301a3yqpbk8n1d4s97sfby2aysl275x04g0zh8jxqp";
-  };
-  goPackageAliases = [ "code.google.com/p/go.net" ]; <co xml:id='ex-buildGoPackage-3' />
-  propagatedBuildInputs = [ goPackages.text ]; <co xml:id='ex-buildGoPackage-4' />
-  buildFlags = "--tags release"; <co xml:id='ex-buildGoPackage-5' />
-  disabled = isGo13;<co xml:id='ex-buildGoPackage-6' />
-};
-</programlisting>
-</example>
-
-<para><xref linkend='ex-buildGoPackage'/> is an example expression using buildGoPackage,
-the following arguments are of special significance to the function:
-
-<calloutlist>
-
-  <callout arearefs='ex-buildGoPackage-1'>
-    <para>
-      <varname>goPackagePath</varname> specifies the package's canonical Go import path.
-    </para>
-  </callout>
-
-  <callout arearefs='ex-buildGoPackage-2'>
-    <para>
-      <varname>subPackages</varname> limits the builder from building child packages that
-      have not been listed. If <varname>subPackages</varname> is not specified, all child
-      packages will be built.
-    </para>
-    <para>
-      In this example only <literal>code.google.com/p/go.net/ipv4</literal> and
-      <literal>code.google.com/p/go.net/ipv4</literal> will be built.
-    </para>
-  </callout>
-
-  <callout arearefs='ex-buildGoPackage-3'>
-    <para>
-      <varname>goPackageAliases</varname> is a list of alternative import paths
-      that are valid for this library.
-      Packages that depend on this library will automatically rename
-      import paths that match any of the aliases to <literal>goPackagePath</literal>.
-    </para>
-    <para>
-      In this example imports will be renamed from
-      <literal>code.google.com/p/go.net</literal> to
-      <literal>golang.org/x/net</literal> in every package that depend on the
-      <literal>go.net</literal> library.
-    </para>
-  </callout>
-
-  <callout arearefs='ex-buildGoPackage-4'>
-    <para>
-      <varname>propagatedBuildInputs</varname> is where the dependencies of a Go library are
-      listed. Only libraries should list <varname>propagatedBuildInputs</varname>. If a standalone
-      program is being build instead, use <varname>buildInputs</varname>. If a library's tests require
-      additional dependencies that are not propagated, they should be listed in <varname>buildInputs</varname>.
-    </para>
-  </callout>
-
-  <callout arearefs='ex-buildGoPackage-5'>
-    <para>
-      <varname>buildFlags</varname> is a list of flags passed to the go build command.
-    </para>
-  </callout>
-
-  <callout arearefs='ex-buildGoPackage-6'>
-    <para>
-      If <varname>disabled</varname> is <literal>true</literal>,
-      nix will refuse to build this package.
-    </para>
-    <para>
-      In this example the package will not be built for go 1.3. The <literal>isGo13</literal>
-      is an utility function that returns <literal>true</literal> if go used to build the
-      package has version 1.3.x.
-    </para>
-  </callout>
-
-</calloutlist>
-
-</para>
-
-<para>
-Reusable Go libraries may be found in the <varname>goPackages</varname> set. You can test
-build a Go package as follows:
-
-<screen>
-$ nix-build -A goPackages.net
-</screen>
-
-</para>
-
-<para>
-You may use Go packages installed into the active Nix profiles by adding
-the following to your ~/.bashrc:
-
-<screen>
-for p in $NIX_PROFILES; do
-    GOPATH="$p/share/go:$GOPATH"
-done
-</screen>
-</para>
-
-  <para>To extract dependency information from a Go package in automated way use <link xlink:href="https://github.com/cstrahan/go2nix">go2nix</link>.</para>
-</section>
-
-
-<section xml:id="sec-language-java"><title>Java</title>
+<section xml:id="ssec-language-java"><title>Java</title>
 
 <para>Ant-based Java packages are typically built from source as follows:
 
@@ -897,156 +314,6 @@ Runtime) instead of the OpenJRE.</para>
 </section>
 
 
-<section xml:id="sec-language-lua"><title>Lua</title>
-
-<para>
-  Lua packages are built by the <varname>buildLuaPackage</varname> function.  This function is
-  implemented
-  in <link xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/development/lua-modules/generic/default.nix">
-  <filename>pkgs/development/lua-modules/generic/default.nix</filename></link>
-  and works similarly to <varname>buildPerlPackage</varname>. (See
-  <xref linkend="sec-language-perl"/> for details.)
-</para>
-
-<para>
-  Lua packages are defined
-  in <link xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/top-level/lua-packages.nix"><filename>pkgs/top-level/lua-packages.nix</filename></link>.
-  Most of them are simple. For example:
-
-  <programlisting>
-fileSystem = buildLuaPackage {
-  name = "filesystem-1.6.2";
-  src = fetchurl {
-    url = "https://github.com/keplerproject/luafilesystem/archive/v1_6_2.tar.gz";
-    sha256 = "1n8qdwa20ypbrny99vhkmx8q04zd2jjycdb5196xdhgvqzk10abz";
-  };
-  meta = {
-    homepage = "https://github.com/keplerproject/luafilesystem";
-    hydraPlatforms = stdenv.lib.platforms.linux;
-    maintainers = with maintainers; [ flosse ];
-  };
-};
-  </programlisting>
-</para>
-
-<para>
-  Though, more complicated package should be placed in a seperate file in
-  <link
-  xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/development/lua-modules"><filename>pkgs/development/lua-modules</filename></link>.
-</para>
-<para>
-  Lua packages accept additional parameter <varname>disabled</varname>, which defines
-  the condition of disabling package from luaPackages. For example, if package has
-  <varname>disabled</varname> assigned to <literal>lua.luaversion != "5.1"</literal>,
-  it will not be included in any luaPackages except lua51Packages, making it
-  only be built for lua 5.1.
-</para>
-
-</section>
-
-<section xml:id="sec-language-coq"><title>Coq</title>
-  <para>
-    Coq libraries should be installed in
-    <literal>$(out)/lib/coq/${coq.coq-version}/user-contrib/</literal>.
-    Such directories are automatically added to the
-    <literal>$COQPATH</literal> environment variable by the hook defined
-    in the Coq derivation.
-  </para>
-  <para>
-    Some libraries require OCaml and sometimes also Camlp5. The exact
-    versions that were used to build Coq are saved in the
-    <literal>coq.ocaml</literal> and <literal>coq.camlp5</literal>
-    attributes.
-  </para>
-  <para>
-    Here is a simple package example. It is a pure Coq library, thus it
-    only depends on Coq. Its <literal>makefile</literal> has been
-    generated using <literal>coq_makefile</literal> so we only have to
-    set the <literal>$COQLIB</literal> variable at install time.
-  </para>
-  <programlisting>
-{stdenv, fetchurl, coq}:
-stdenv.mkDerivation {
-  src = fetchurl {
-    url = http://coq.inria.fr/pylons/contribs/files/Karatsuba/v8.4/Karatsuba.tar.gz;
-    sha256 = "0ymfpv4v49k4fm63nq6gcl1hbnnxrvjjp7yzc4973n49b853c5b1";
-  };
-
-  name = "coq-karatsuba";
-
-  buildInputs = [ coq ];
-
-  installFlags = "COQLIB=$(out)/lib/coq/${coq.coq-version}/";
-}
-</programlisting>
-</section>
-
-<section xml:id="sec-language-qt"><title>Qt</title>
-
-<para>The information in this section applies to Qt 5.5 and later.</para>
-
-<para>Qt is an application development toolkit for C++. Although it is
-not a distinct programming language, there are special considerations
-for packaging Qt-based programs and libraries. A small set of tools
-and conventions has grown out of these considerations.</para>
-
-<section xml:id="ssec-qt-libraries"><title>Libraries</title>
-
-<para>Packages that provide libraries should be listed in
-<varname>qt5LibsFun</varname> so that the library is built with each
-Qt version. A set of packages is provided for each version of Qt; for
-example, <varname>qt5Libs</varname> always provides libraries built
-with the latest version, <varname>qt55Libs</varname> provides
-libraries built with Qt 5.5, and so on. To avoid version conflicts, no
-top-level attributes are created for these packages.</para>
-
-</section>
-
-<section xml:id="ssec-qt-programs"><title>Programs</title>
-
-<para>Application packages do not need to be built with every Qt
-version. To ensure consistency between the package's dependencies,
-call the package with <literal>qt5Libs.callPackage</literal> instead
-of the usual <literal>callPackage</literal>. An older version may be
-selected in case of incompatibility. For example, to build with Qt
-5.5, call the package with
-<literal>qt55Libs.callPackage</literal>.</para>
-
-<para>Several environment variables must be set at runtime for Qt
-applications to function correctly, including:</para>
-
-<itemizedlist>
-  <listitem><para><envar>QT_PLUGIN_PATH</envar></para></listitem>
-  <listitem><para><envar>QML_IMPORT_PATH</envar></para></listitem>
-  <listitem><para><envar>QML2_IMPORT_PATH</envar></para></listitem>
-  <listitem><para><envar>XDG_DATA_DIRS</envar></para></listitem>
-</itemizedlist>
-
-<para>To ensure that these are set correctly, the program must be wrapped by
-invoking <literal>wrapQtProgram <replaceable>program</replaceable></literal>
-during installation (for example, during
-<literal>fixupPhase</literal>). <literal>wrapQtProgram</literal>
-accepts the same options as <literal>makeWrapper</literal>.
-</para>
-
-</section>
-
-<section xml:id="ssec-qt-kde"><title>KDE</title>
-
-<para>Many of the considerations above also apply to KDE packages,
-especially the need to set the correct environment variables at
-runtime. To ensure that this is done, invoke <literal>wrapKDEProgram
-<replaceable>program</replaceable></literal> during
-installation. <literal>wrapKDEProgram</literal> also generates a
-<literal>ksycoca</literal> database so that required data and services
-can be found. Like its Qt counterpart,
-<literal>wrapKDEProgram</literal> accepts the same options as
-<literal>makeWrapper</literal>.</para>
-
-</section>
-
-</section>
-
 <!--
 <section><title>Haskell</title>
 

doc/manual.xml

@@ -3,23 +3,36 @@
 
   <info>
 
-    <title>Nixpkgs Contributors Guide</title>
+    <title>Nixpkgs Manual</title>
 
-    <subtitle>Version <xi:include href=".version" parse="text" /></subtitle>
+    <subtitle>Draft (Version <xi:include href="../.version"
+    parse="text" />)</subtitle>
+
+    <author>
+      <personname>
+        <firstname>Eelco</firstname>
+        <surname>Dolstra</surname>
+      </personname>
+      <affiliation>
+        <orgname>LogicBlox</orgname>
+      </affiliation>
+    </author>
+
+    <copyright>
+      <year>2008-2012</year>
+      <holder>Eelco Dolstra</holder>
+    </copyright>
 
   </info>
 
   <xi:include href="introduction.xml" />
   <xi:include href="quick-start.xml" />
   <xi:include href="stdenv.xml" />
-  <xi:include href="packageconfig.xml" />
-  <xi:include href="functions.xml" />
   <xi:include href="meta.xml" />
   <xi:include href="language-support.xml" />
   <xi:include href="package-notes.xml" />
   <xi:include href="coding-conventions.xml" />
-  <xi:include href="submitting-changes.xml" />
-  <xi:include href="haskell-users-guide.xml" />
   <xi:include href="contributing.xml" />
-
+  
+        
 </book>

doc/meta.xml

@@ -27,7 +27,7 @@ meta = {
 
 <para>Meta-attributes are not passed to the builder of the package.
 Thus, a change to a meta-attribute doesn’t trigger a recompilation of
-the package.  The value of a meta-attribute must be a string.</para>
+the package.  The value of a meta-attribute must a string.</para>
 
 <para>The meta-attributes of a package can be queried from the
 command-line using <command>nix-env</command>:
@@ -61,7 +61,7 @@ $ nix-env -qa hello --meta --json
                 "i686-openbsd",
                 "x86_64-openbsd"
             ],
-            "position": "/home/user/dev/nixpkgs/pkgs/applications/misc/hello/default.nix:14"
+            "position": "/home/user/dev/nixpkgs/pkgs/applications/misc/hello/ex-2/default.nix:14"
         },
         "name": "hello-2.9",
         "system": "x86_64-linux"
@@ -82,10 +82,10 @@ hello-2.3  A program that produces a familiar, friendly greeting
 </para>
 
 
-<section xml:id="sec-standard-meta-attributes"><title>Standard
-meta-attributes</title>
+<section><title>Standard meta-attributes</title>
 
-<para>It is expected that each meta-attribute is one of the following:</para>
+<para>The following meta-attributes have a standard
+interpretation:</para>
 
 <variablelist>
 
@@ -112,65 +112,20 @@ meta-attributes</title>
     package.</para></listitem>
   </varlistentry>
 
-  <varlistentry>
-    <term><varname>version</varname></term>
-    <listitem><para>Package version.</para></listitem>
-  </varlistentry>
-
-  <varlistentry>
-    <term><varname>branch</varname></term>
-    <listitem><para>Release branch. Used to specify that a package is not
-    going to receive updates that are not in this branch; for example, Linux
-    kernel 3.0 is supposed to be updated to 3.0.X, not 3.1.</para></listitem>
-  </varlistentry>
-
   <varlistentry>
     <term><varname>homepage</varname></term>
     <listitem><para>The package’s homepage.  Example:
     <literal>http://www.gnu.org/software/hello/manual/</literal></para></listitem>
   </varlistentry>
 
-  <varlistentry>
-    <term><varname>downloadPage</varname></term>
-    <listitem><para>The page where a link to the current version can be found.  Example:
-    <literal>http://ftp.gnu.org/gnu/hello/</literal></para></listitem>
-  </varlistentry>
-
   <varlistentry>
     <term><varname>license</varname></term>
-    <listitem>
-      <para>
-        The license, or licenses, for the package. One from the attribute set
-        defined in <link
-          xlink:href="https://github.com/NixOS/nixpkgs/blob/master/lib/licenses.nix">
-          <filename>nixpkgs/lib/licenses.nix</filename></link>. At this moment
-        using both a list of licenses and a single license is valid. If the
-        license field is in the form of a list representation, then it means
-        that parts of the package are licensed differently.  Each license
-        should preferably be referenced by their attribute. The non-list
-        attribute value can also be a space delimited string representation of
-        the contained attribute shortNames or spdxIds. The following are all valid
-        examples:
-        <itemizedlist>
-          <listitem><para>Single license referenced by attribute (preferred)
-              <literal>stdenv.lib.licenses.gpl3</literal>.
-          </para></listitem>
-          <listitem><para>Single license referenced by its attribute shortName (frowned upon)
-              <literal>"gpl3"</literal>.
-          </para></listitem>
-          <listitem><para>Single license referenced by its attribute spdxId (frowned upon)
-              <literal>"GPL-3.0"</literal>.
-          </para></listitem>
-          <listitem><para>Multiple licenses referenced by attribute (preferred)
-              <literal>with stdenv.lib.licenses; [ asl20 free ofl ]</literal>.
-          </para></listitem>
-          <listitem><para>Multiple licenses referenced as a space delimited string of attribute shortNames (frowned upon)
-              <literal>"asl20 free ofl"</literal>.
-          </para></listitem>
-        </itemizedlist>
-        For details, see <xref linkend='sec-meta-license'/>.
-      </para>
-    </listitem>
+    <listitem><para>The license for the package. One from attribute set defined in
+      <link xlink:href="https://github.com/NixOS/nixpkgs/blob/master/lib/licenses.nix">
+      <filename>nixpkgs/lib/licenses.nix</filename></link>.
+      Example:
+      <literal>stdenv.lib.licenses.gpl3</literal>.</para></listitem>
+      See details in <xref linkend='sec-meta-license'/>,
   </varlistentry>
 
   <varlistentry>
@@ -240,16 +195,6 @@ meta.hydraPlatforms = [];
     they are fixed.</para></listitem>
   </varlistentry>
 
-  <varlistentry>
-    <term><varname>updateWalker</varname></term>
-    <listitem><para>If set to <literal>true</literal>, the package is
-    tested to be updated correctly by the <literal>update-walker.sh</literal>
-    script without additional settings. Such packages have
-    <varname>meta.version</varname> set and their homepage (or
-    the page specified by <varname>meta.downloadPage</varname>) contains
-    a direct link to the package tarball.</para></listitem>
-  </varlistentry>
-
 </variablelist>
 
 
@@ -311,9 +256,9 @@ to indicate the specific license:
 </variablelist>
 
 </para>
-
+  
 
 </section>
-
+  
 
 </chapter>

doc/old/cross.txt

@@ -184,10 +184,10 @@ if test "$noSysDirs" = "1"; then
     if test "$noSysDirs" = "1"; then
         # Figure out what extra flags to pass to the gcc compilers
         # being generated to make sure that they use our glibc.
-        if test -e $NIX_CC/nix-support/orig-glibc; then
-            glibc=$(cat $NIX_CC/nix-support/orig-glibc)
+        if test -e $NIX_GCC/nix-support/orig-glibc; then
+            glibc=$(cat $NIX_GCC/nix-support/orig-glibc)
             # Ugh.  Copied from gcc-wrapper/builder.sh.  We can't just
-            # source in $NIX_CC/nix-support/add-flags, since that
+            # source in $NIX_GCC/nix-support/add-flags, since that
             # would cause *this* GCC to be linked against the
             # *previous* GCC.  Need some more modularity there.
             extraCFlags="-B$glibc/lib -isystem $glibc/include"

doc/package-notes.xml

@@ -141,7 +141,7 @@ $ make menuconfig ARCH=<replaceable>arch</replaceable></screen>
 
 <!--============================================================-->
 
-<section xml:id="sec-xorg">
+<section>
 
 <title>X.org</title>
 
@@ -219,151 +219,5 @@ you should modify
 </section>
 -->
 
-<!--============================================================-->
-
-<section 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>
-$ 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>~/.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>
-$ 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>
-
-<section xml:id="sec-elm">
-
-<title>Elm</title>
-
-<para>
-The Nix expressions for Elm reside in
-<filename>pkgs/development/compilers/elm</filename>. They are generated
-automatically by <command>update-elm.rb</command> script. One should
-specify versions of Elm packages inside the script, clear the
-<filename>packages</filename> directory and run the script from inside it.
-<literal>elm-reactor</literal> is special because it also has Elm package
-dependencies. The process is not automated very much for now -- you should
-get the <literal>elm-reactor</literal> source tree (e.g. with
-<command>nix-shell</command>) and run <command>elm2nix.rb</command> inside
-it. Place the resulting <filename>package.nix</filename> file into
-<filename>packages/elm-reactor-elm.nix</filename>.
-</para>
-
-</section>
 
 </chapter>

doc/packageconfig.xml

@@ -1,88 +0,0 @@
-<chapter xmlns="http://docbook.org/ns/docbook"
-	 xmlns:xlink="http://www.w3.org/1999/xlink"
-	 xml:id="chap-packageconfig">
-
-<title><filename>~/.nixpkgs/config.nix</filename>: global configuration</title>
-
-    <para>
-      Nix packages can be configured to allow or deny certain options.
-    </para>
-
-    <para>
-	To apply the configuration edit <filename>~/.nixpkgs/config.nix</filename>
-	and set it like
-<programlisting>{
-  allowUnfree = true;
-}</programlisting>
-	and will allow the Nix package manager to install unfree licensed packages.
-
-	The configuration as listed also applies to NixOS under <option>nixpkgs.config</option> set.
-    </para>
-
-    <itemizedlist>
-	<listitem>
-	    <para>
-		Allow installing of packages that are distributed under unfree license by setting
-		<programlisting>allowUnfree = true;</programlisting>
-		or deny them by setting it to <literal>false</literal>.
-	    </para>
-	    <para>
-		Same can be achieved by setting the environment variable:
-		<programlisting>$ export NIXPKGS_ALLOW_UNFREE=1</programlisting>
-	    </para>
-	</listitem>
-
-	<listitem>
-	    <para>
-		Whenever unfree packages are not allowed, single packages can
-		still be allowed by a predicate function that accepts package
-		as an argument and should return a boolean:
-		<programlisting>allowUnfreePredicate = (pkg: ...);</programlisting>
-
-		Example to allow flash player only:
-		<programlisting>allowUnfreePredicate = (pkg: pkgs.lib.hasPrefix "flashplayer-" pkg.name);</programlisting>
-	    </para>
-	</listitem>
-
-	<listitem>
-	    <para>
-		Whenever unfree packages are not allowed, packages can still be
-		whitelisted by their license:
-		<programlisting>whitelistedLicenses = with stdenv.lib.licenses; [ amd wtfpl ];</programlisting>
-	    </para>
-	</listitem>
-
-	<listitem>
-	    <para>
-		In addition to whitelisting licenses which are denied by the
-		<literal>allowUnfree</literal> setting, you can also explicitely
-		deny installation of packages which have a certain license:
-		<programlisting>blacklistedLicenses = with stdenv.lib.licenses; [ agpl3 gpl3 ];</programlisting>
-	    </para>
-	</listitem>
-    </itemizedlist>
-
-    <para>
-	A complete list of licenses can be found in the file
-	<filename>lib/licenses.nix</filename> of the nix package tree.
-    </para>
-
-<section xml:id="sec-modify-via-packageOverrides"><title>Modify
-packages via <literal>packageOverrides</literal></title>
-
-<para>
-
-  You can define a function called <varname>packageOverrides</varname>
-  in your local <filename>~/.nixpkgs/config</filename> to overide nix
-  packages.  It must be a function that takes pkgs as an argument and
-  return modified set of packages.
-
-  <programlisting>{
-  packageOverrides = pkgs: rec {
-    foo = pkgs.foo.override { ... };
-  };
-}</programlisting>
-</para>
-</section>
-
-</chapter>

doc/quick-start.xml

@@ -55,18 +55,18 @@ $ git add pkgs/development/libraries/libfoo/default.nix</screen>
       <itemizedlist>
 
         <listitem>
-          <para>GNU Hello: <link
-          xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/applications/misc/hello/default.nix"><filename>pkgs/applications/misc/hello/default.nix</filename></link>.
-          Trivial package, which specifies some <varname>meta</varname>
-          attributes which is good practice.</para>
+          <para>GNU cpio: <link
+          xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/tools/archivers/cpio/default.nix"><filename>pkgs/tools/archivers/cpio/default.nix</filename></link>.
+          The simplest possible package.  The generic builder in
+          <varname>stdenv</varname> does everything for you.  It has
+          no dependencies beyond <varname>stdenv</varname>.</para>
         </listitem>
 
         <listitem>
-          <para>GNU cpio: <link
-          xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/tools/archivers/cpio/default.nix"><filename>pkgs/tools/archivers/cpio/default.nix</filename></link>.
-          Also a simple package. The generic builder in
-          <varname>stdenv</varname> does everything for you. It has
-          no dependencies beyond <varname>stdenv</varname>.</para>
+          <para>GNU Hello: <link
+          xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/applications/misc/hello/ex-2/default.nix"><filename>pkgs/applications/misc/hello/ex-2/default.nix</filename></link>.
+          Also trivial, but it specifies some <varname>meta</varname>
+          attributes which is good practice.</para>
         </listitem>
 
         <listitem>
@@ -92,6 +92,17 @@ $ git add pkgs/development/libraries/libfoo/default.nix</screen>
           hackery.</para>
         </listitem>
 
+        <listitem>
+          <para>BitTorrent (wxPython-based): <link
+          xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/tools/networking/p2p/bittorrent/default.nix"><filename>pkgs/tools/networking/p2p/bittorrent/default.nix</filename></link>.
+          Uses an external <link
+          xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/tools/networking/p2p/bittorrent/builder.sh">build
+          script</link>, which can be useful if you have lots of code
+          that you don’t want cluttering up the Nix expression.  But
+          external builders are mostly obsolete.
+          </para>
+        </listitem>
+
         <listitem>
           <para>Thunderbird: <link
           xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/applications/networking/mailreaders/thunderbird/default.nix"><filename>pkgs/applications/networking/mailreaders/thunderbird/default.nix</filename></link>.

doc/quote-literals.xsl

@@ -0,0 +1,44 @@
+<?xml version="1.0"?>
+
+<xsl:stylesheet
+  version="1.0"
+  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+  xmlns:str="http://exslt.org/strings"
+  extension-element-prefixes="str">
+
+  <xsl:output method="xml"/>
+  
+  <xsl:template match="function|command|literal|varname|filename|option|quote">`<xsl:apply-templates/>'</xsl:template>
+  
+  <xsl:template match="token"><xsl:text>    </xsl:text><xsl:apply-templates /><xsl:text>
+</xsl:text></xsl:template>
+
+  <xsl:template match="screen|programlisting">
+    <screen><xsl:apply-templates select="str:split(., '&#xA;')" /></screen>
+  </xsl:template>
+
+  <xsl:template match="section[following::section]">
+    <section>
+      <xsl:apply-templates />
+      <screen><xsl:text>
+      </xsl:text></screen>        
+    </section>
+  </xsl:template>
+
+  <xsl:template match="*">
+    <xsl:element name="{name(.)}" namespace="{namespace-uri(.)}">
+      <xsl:copy-of select="namespace::*" />
+      <xsl:for-each select="@*">
+	<xsl:attribute name="{name(.)}" namespace="{namespace-uri(.)}">
+	  <xsl:value-of select="."/>
+	</xsl:attribute>
+      </xsl:for-each>
+      <xsl:apply-templates/>
+    </xsl:element>
+  </xsl:template>
+
+  <xsl:template match="text()">
+    <xsl:value-of select="translate(., '‘’“”—', concat(&quot;`'&quot;, '&quot;&quot;-'))" />
+  </xsl:template>
+  
+</xsl:stylesheet>

doc/stdenv.xml

@@ -15,8 +15,7 @@ environment does everything automatically.  If
 can easily customise or override the various build phases.</para>
 
 
-<section xml:id="sec-using-stdenv"><title>Using
-<literal>stdenv</literal></title>
+<section><title>Using <literal>stdenv</literal></title>
 
 <para>To build a package with the standard environment, you use the
 function <varname>stdenv.mkDerivation</varname>, instead of the
@@ -59,7 +58,7 @@ build.  To make this easier, the standard environment breaks the
 package build into a number of <emphasis>phases</emphasis>, all of
 which can be overridden or modified individually: unpacking the
 sources, applying patches, configuring, building, and installing.
-(There are some others; see <xref linkend="sec-stdenv-phases"/>.)
+(There are some others; see <xref linkend="ssec-stdenv-phases"/>.)
 For instance, a package that doesn’t supply a makefile but instead has
 to be compiled “manually” could be handled like this:
 
@@ -125,8 +124,7 @@ genericBuild
 </section>
 
 
-<section xml:id="sec-tools-of-stdenv"><title>Tools provided by
-<literal>stdenv</literal></title>
+<section><title>Tools provided by <literal>stdenv</literal></title>
 
 <para>The standard environment provides the following packages:
 
@@ -152,8 +150,8 @@ genericBuild
 
   <listitem><para>GNU <command>tar</command>.</para></listitem>
 
-  <listitem><para><command>gzip</command>, <command>bzip2</command>
-  and <command>xz</command>.</para></listitem>
+  <listitem><para><command>gzip</command> and
+  <command>bzip2</command>.</para></listitem>
 
   <listitem><para>GNU Make.  It has been patched to provide
   <quote>nested</quote> output that can be fed into the
@@ -227,7 +225,7 @@ genericBuild
 </section>
 
 
-<section xml:id="sec-stdenv-phases"><title>Phases</title>
+<section xml:id="ssec-stdenv-phases"><title>Phases</title>
 
 <para>The generic builder has a number of <emphasis>phases</emphasis>.
 Package builds are split into phases to make it easier to override
@@ -245,8 +243,7 @@ is convenient to override a phase from the derivation, while the
 latter is convenient from a build script.</para>
 
 
-<section xml:id="ssec-controlling-phases"><title>Controlling
-phases</title>
+<section><title>Controlling phases</title>
 
 <para>There are a number of variables that control what phases are
 executed and in what order:
@@ -330,7 +327,7 @@ executed and in what order:
 </section>
 
 
-<section xml:id="ssec-unpack-phase"><title>The unpack phase</title>
+<section><title>The unpack phase</title>
 
 <para>The unpack phase is responsible for unpacking the source code of
 the package.  The default implementation of
@@ -344,11 +341,9 @@ It supports the following files by default:
     <term>Tar files</term>
     <listitem><para>These can optionally be compressed using
     <command>gzip</command> (<filename>.tar.gz</filename>,
-    <filename>.tgz</filename> or <filename>.tar.Z</filename>),
+    <filename>.tgz</filename> or <filename>.tar.Z</filename>) or
     <command>bzip2</command> (<filename>.tar.bz2</filename> or
-    <filename>.tbz2</filename>) or <command>xz</command>
-    (<filename>.tar.xz</filename> or
-    <filename>.tar.lzma</filename>).</para></listitem>
+    <filename>.tbz2</filename>).</para></listitem>
   </varlistentry>
 
   <varlistentry>
@@ -437,7 +432,7 @@ Additional file types can be supported by setting the
 </section>
 
 
-<section xml:id="ssec-patch-phase"><title>The patch phase</title>
+<section><title>The patch phase</title>
 
 <para>The patch phase applies the list of patches defined in the
 <varname>patches</varname> variable.</para>
@@ -450,10 +445,9 @@ Additional file types can be supported by setting the
     <listitem><para>The list of patches.  They must be in the format
     accepted by the <command>patch</command> command, and may
     optionally be compressed using <command>gzip</command>
-    (<filename>.gz</filename>), <command>bzip2</command>
-    (<filename>.bz2</filename>) or <command>xz</command>
-    (<filename>.xz</filename>).</para></listitem>
-  </varlistentry>
+    (<filename>.gz</filename>) or <command>bzip2</command>
+    (<filename>.bz2</filename>).</para></listitem>
+  </varlistentry>  
 
   <varlistentry>
     <term><varname>patchFlags</varname></term>
@@ -480,7 +474,7 @@ Additional file types can be supported by setting the
 </section>
 
 
-<section xml:id="ssec-configure-phase"><title>The configure phase</title>
+<section><title>The configure phase</title>
 
 <para>The configure phase prepares the source tree for building.  The
 default <function>configurePhase</function> runs
@@ -516,8 +510,8 @@ script) if it exists.</para>
     <term><varname>dontAddPrefix</varname></term>
     <listitem><para>By default, the flag
     <literal>--prefix=$prefix</literal> is added to the configure
-    flags.  If this is undesirable, set this variable to
-    true.</para></listitem>
+    flags.  If this is undesirable, set this variable to a non-empty
+    value.</para></listitem>
   </varlistentry>
 
   <varlistentry>
@@ -533,7 +527,8 @@ script) if it exists.</para>
     <listitem><para>By default, the flag
     <literal>--disable-dependency-tracking</literal> is added to the
     configure flags to speed up Automake-based builds.  If this is
-    undesirable, set this variable to true.</para></listitem>
+    undesirable, set this variable to a non-empty
+    value.</para></listitem>
   </varlistentry>
 
   <varlistentry>
@@ -546,16 +541,7 @@ script) if it exists.</para>
     variables in the Libtool script to prevent Libtool from using
     libraries in <filename>/usr/lib</filename> and
     such.</para></footnote>.  If this is undesirable, set this
-    variable to true.</para></listitem>
-  </varlistentry>
-
-  <varlistentry>
-    <term><varname>dontDisableStatic</varname></term>
-    <listitem><para>By default, when the configure script has
-    <option>--enable-static</option>, the option
-    <option>--disable-static</option> is added to the configure flags.</para>
-    <para>If this is undesirable, set this variable to
-    true.</para></listitem>
+    variable to a non-empty value.</para></listitem>
   </varlistentry>
 
   <varlistentry>
@@ -576,7 +562,7 @@ script) if it exists.</para>
 </section>
 
 
-<section xml:id="build-phase"><title>The build phase</title>
+<section><title>The build phase</title>
 
 <para>The build phase is responsible for actually building the package
 (e.g. compiling it).  The default <function>buildPhase</function>
@@ -660,7 +646,7 @@ called, respectively.</para>
 </section>
 
 
-<section xml:id="ssec-check-phase"><title>The check phase</title>
+<section><title>The check phase</title>
 
 <para>The check phase checks whether the package was built correctly
 by running its test suite.  The default
@@ -720,7 +706,7 @@ doCheck = true;</programlisting>
 </section>
 
 
-<section xml:id="ssec-install-phase"><title>The install phase</title>
+<section><title>The install phase</title>
 
 <para>The install phase is responsible for installing the package in
 the Nix store under <envar>out</envar>.  The default
@@ -729,7 +715,7 @@ the Nix store under <envar>out</envar>.  The default
 install</command>.</para>
 
 <variablelist>
-  <title>Variables controlling the install phase</title>
+  <title>Variables controlling the check phase</title>
 
   <varlistentry>
     <term><varname>makeFlags</varname> /
@@ -775,7 +761,7 @@ installTargets = "install-bin install-doc";</programlisting>
 </section>
 
 
-<section xml:id="ssec-fixup-phase"><title>The fixup phase</title>
+<section><title>The fixup phase</title>
 
 <para>The fixup phase performs some (Nix-specific) post-processing
 actions on the files installed under <filename>$out</filename> by the
@@ -808,7 +794,7 @@ following:
 </para>
 
 <variablelist>
-  <title>Variables controlling the fixup phase</title>
+  <title>Variables controlling the check phase</title>
 
   <varlistentry>
     <term><varname>dontStrip</varname></term>
@@ -816,12 +802,6 @@ following:
     stripped.  By default, they are.</para></listitem>
   </varlistentry>
 
-  <varlistentry>
-    <term><varname>dontMoveSbin</varname></term>
-    <listitem><para>If set, files in <filename>$out/sbin</filename> are not moved
-    to <filename>$out/bin</filename>. By default, they are.</para></listitem>
-  </varlistentry>
-
   <varlistentry>
     <term><varname>stripAllList</varname></term>
     <listitem><para>List of directories to search for libraries and
@@ -899,41 +879,12 @@ following:
     phase.</para></listitem>
   </varlistentry>
 
-  <varlistentry>
-    <term><varname>separateDebugInfo</varname></term>
-    <listitem><para>If set to <literal>true</literal>, the standard
-    environment will enable debug information in C/C++ builds. After
-    installation, the debug information will be separated from the
-    executables and stored in the output named
-    <literal>debug</literal>. (This output is enabled automatically;
-    you don’t need to set the <varname>outputs</varname> attribute
-    explicitly.) To be precise, the debug information is stored in
-    <filename><replaceable>debug</replaceable>/lib/debug/.build-id/<replaceable>XX</replaceable>/<replaceable>YYYY…</replaceable></filename>,
-    where <replaceable>XXYYYY…</replaceable> is the <replaceable>build
-    ID</replaceable> of the binary — a SHA-1 hash of the contents of
-    the binary. Debuggers like GDB use the build ID to look up the
-    separated debug information.</para>
-
-    <para>For example, with GDB, you can add
-
-<programlisting>
-set debug-file-directory ~/.nix-profile/lib/debug
-</programlisting>
-
-    to <filename>~/.gdbinit</filename>. GDB will then be able to find
-    debug information installed via <literal>nix-env
-    -i</literal>.</para>
-
-    </listitem>
-  </varlistentry>
-
 </variablelist>
 
 </section>
 
 
-<section xml:id="ssec-distribution-phase"><title>The distribution
-phase</title>
+<section><title>The distribution phase</title>
 
 <para>The distribution phase is intended to produce a source
 distribution of the package.  The default
@@ -1166,9 +1117,12 @@ echo @foo@
   <varlistentry>
     <term>Python</term>
     <listitem><para>Adds the
-    <filename>lib/${python.libPrefix}/site-packages</filename> subdirectory of
+    <filename>lib/python2.5/site-packages</filename> subdirectory of
     each build input to the <envar>PYTHONPATH</envar> environment
-    variable.</para></listitem>
+    variable.</para>
+
+    <note><para>This should be generalised: the Python version
+    shouldn’t be hard-coded.</para></note></listitem>
   </varlistentry>
 
   <varlistentry>
@@ -1204,7 +1158,7 @@ echo @foo@
   </varlistentry>
 
   <varlistentry>
-    <term>Qt 4</term>
+    <term>Qt</term>
     <listitem><para>Sets the <envar>QTDIR</envar> environment variable
     to Qt’s path.</para></listitem>
   </varlistentry>
@@ -1237,7 +1191,7 @@ echo @foo@
 </section>
 
 
-<section xml:id="sec-purity-in-nixpkgs"><title>Purity in Nixpkgs</title>
+<section><title>Purity in Nixpkgs</title>
 
 <para>[measures taken to prevent dependencies on packages outside the
 store, and what you can do to prevent them]</para>

doc/submitting-changes.xml

@@ -1,283 +0,0 @@
-<chapter xmlns="http://docbook.org/ns/docbook"
-         xmlns:xlink="http://www.w3.org/1999/xlink"
-         xml:id="chap-submitting-changes">
-
-<title>Submitting changes</title>
-
-<section>
-<title>Making patches</title>
-
-<itemizedlist>
-<listitem>
-<para>Read <link xlink:href="https://nixos.org/nixpkgs/manual/">Manual (How to write packages for Nix)</link>.</para>
-</listitem>
-
-<listitem>
-<para>Fork the repository on GitHub.</para>
-</listitem>
-
-<listitem>
-<para>Create a branch for your future fix.
-
-<itemizedlist>
-<listitem>
-<para>You can make branch from a commit of your local <command>nixos-version</command>. That will help you to avoid additional local compilations. Because you will receive packages from binary cache.
-
-<itemizedlist>
-<listitem>
-<para>For example: <command>nixos-version</command> returns <command>15.05.git.0998212 (Dingo)</command>. So you can do:</para>
-</listitem>
-</itemizedlist>
-
-<screen>
-$ git checkout 0998212
-$ git checkout -b 'fix/pkg-name-update'
-</screen>
-</para>
-</listitem>
-
-<listitem>
-<para>Please avoid working directly on the <command>master</command> branch.</para>
-</listitem>
-</itemizedlist>
-</para>
-</listitem>
-
-<listitem>
-<para>Make commits of logical units.
-
-<itemizedlist>
-<listitem>
-<para>If you removed pkgs, made some major NixOS changes etc., write about them in <command>nixos/doc/manual/release-notes/rl-unstable.xml</command>.</para>
-</listitem>
-</itemizedlist>
-</para>
-</listitem>
-
-<listitem>
-<para>Check for unnecessary whitespace with <command>git diff --check</command> before committing.</para>
-</listitem>
-
-<listitem>
-<para>Format the commit in a following way:</para>
-<programlisting>
-(pkg-name | service-name): (from -> to | init at version | refactor | etc)
-Additional information.
-</programlisting>
-
-<itemizedlist>
-<listitem>
-<para>Examples:
-
-<itemizedlist>
-<listitem>
-<para>
-<command>nginx: init at 2.0.1</command>
-</para>
-</listitem>
-
-<listitem>
-<para>
-<command>firefox: 3.0 -> 3.1.1</command>
-</para>
-</listitem>
-
-<listitem>
-<para>
-<command>hydra service: add bazBaz option</command>
-</para>
-</listitem>
-
-<listitem>
-<para>
-<command>nginx service: refactor config generation</command>
-</para>
-</listitem>
-</itemizedlist>
-</para>
-</listitem>
-</itemizedlist>
-</listitem>
-
-<listitem>
-<para>Test your changes. If you work with
-
-<itemizedlist>
-<listitem>
-<para>nixpkgs:
-
-<itemizedlist>
-<listitem>
-<para>update pkg ->
-
-<itemizedlist>
-<listitem>
-<para>
-<command>nix-env -i pkg-name -f &lt;path to your local nixpkgs folder&gt;</command>
-</para>
-</listitem>
-</itemizedlist>
-</para>
-</listitem>
-
-<listitem>
-<para>add pkg ->
-
-<itemizedlist>
-<listitem>
-<para>Make sure it's in <command>pkgs/top-level/all-packages.nix</command>
-</para>
-</listitem>
-
-<listitem>
-<para>
-<command>nix-env -i pkg-name -f &lt;path to your local nixpkgs folder&gt;</command>
-</para>
-</listitem>
-</itemizedlist>
-</para>
-</listitem>
-
-<listitem>
-<para>
-<emphasis>If you don't want to install pkg in you profile</emphasis>.
-
-<itemizedlist>
-<listitem>
-<para>
-<command>nix-build -A pkg-attribute-name &lt;path to your local nixpkgs folder&gt;/default.nix</command> and check results in the folder <command>result</command>. It will appear in the same directory where you did <command>nix-build</command>.</para>
-</listitem>
-</itemizedlist>
-</para>
-</listitem>
-
-<listitem>
-<para>If you did <command>nix-env -i pkg-name</command> you can do <command>nix-env -e pkg-name</command> to uninstall it from your system.</para>
-</listitem>
-</itemizedlist>
-</para>
-</listitem>
-
-<listitem>
-<para>NixOS and its modules:
-
-<itemizedlist>
-<listitem>
-<para>You can add new module to your NixOS configuration file (usually it's <command>/etc/nixos/configuration.nix</command>).
-            And do <command>sudo nixos-rebuild test -I nixpkgs=&lt;path to your local nixpkgs folder&gt; --fast</command>.</para>
-</listitem>
-</itemizedlist>
-</para>
-</listitem>
-</itemizedlist>
-</para>
-</listitem>
-
-<listitem>
-<para>If you have commits <command>pkg-name: oh, forgot to insert whitespace</command>: squash commits in this case. Use <command>git rebase -i</command>.</para>
-</listitem>
-
-<listitem>
-<para>Rebase you branch against current <command>master</command>.</para>
-</listitem>
-</itemizedlist>
-</section>
-
-<section>
-<title>Submitting changes</title>
-
-<itemizedlist>
-<listitem>
-<para>Push your changes to your fork of nixpkgs.</para>
-</listitem>
-
-<listitem>
-<para>Create pull request:
-
-<itemizedlist>
-<listitem>
-<para>Write the title in format <command>(pkg-name | service): improvement</command>.
-
-<itemizedlist>
-<listitem>
-<para>If you update the pkg, write versions <command>from -> to</command>.</para>
-</listitem>
-</itemizedlist>
-</para>
-</listitem>
-
-<listitem>
-<para>Write in comment if you have tested your patch. Do not rely much on <command>TravisCI</command>.</para>
-</listitem>
-
-<listitem>
-<para>If you make an improvement, write about your motivation.</para>
-</listitem>
-
-<listitem>
-<para>Notify maintainers of the package. For example add to the message: <command>cc @jagajaga @domenkozar</command>.</para>
-</listitem>
-</itemizedlist>
-</para>
-</listitem>
-</itemizedlist>
-</section>
-
-<section>
-<title>Hotfixing pull requests</title>
-
-<itemizedlist>
-<listitem>
-<para>Make the appropriate changes in you branch.</para>
-</listitem>
-
-<listitem>
-<para>Don't create additional commits, do
-
-<itemizedlist>
-<listitem>
-<para><command>git rebase -i</command></para>
-</listitem>
-<listitem>
-<para>
-<command>git push --force</command> to your branch.</para>
-</listitem>
-</itemizedlist>
-</para>
-</listitem>
-
-</itemizedlist>
-</section>
-
-<section>
-<title>Commit policy</title>
-
-<itemizedlist>
-<listitem>
-<para>Commits must be sufficiently tested before being merged, both for the master and staging branches.</para>
-</listitem>
-
-<listitem>
-<para>Hydra builds for master and staging should not be used as testing platform, it's a build farm for changes that have been already tested.</para>
-</listitem>
-
-<listitem>
-<para>Master should only see non-breaking commits that do not cause mass rebuilds.</para>
-</listitem>
-
-<listitem>
-<para>Staging should only see non-breaking mass-rebuild commits. That means it's not to be used for testing, and changes must have been well tested already. <link xlink:href="http://comments.gmane.org/gmane.linux.distributions.nixos/13447">Read policy here</link>.</para>
-</listitem>
-
-<listitem>
-<para>If staging is already in a broken state, please refrain from adding extra new breakages. Stabilize it for a few days, merge into master, then resume development on staging. <link xlink:href="http://hydra.nixos.org/jobset/nixpkgs/staging#tabs-evaluations">Keep an eye on the staging evaluations here</link>.</para>
-</listitem>
-
-<listitem>
-<para>When changing the bootloader installation process, extra care must be taken. Grub installations cannot be rolled back, hence changes may break people's installations forever. For any non-trivial change to the bootloader please file a PR asking for review, especially from @edolstra.</para>
-</listitem>
-</itemizedlist>
-
-</section>
-</chapter>
-

lib/attrsets.nix

@@ -1,11 +1,12 @@
 # Operations on attribute sets.
 
 with {
-  inherit (builtins) head tail length;
+  inherit (builtins) head tail;
   inherit (import ./trivial.nix) or;
   inherit (import ./default.nix) fold;
   inherit (import ./strings.nix) concatStringsSep;
   inherit (import ./lists.nix) concatMap concatLists all deepSeqList;
+  inherit (import ./misc.nix) maybeAttr;
 };
 
 rec {
@@ -19,8 +20,8 @@ rec {
     let attr = head attrPath;
     in
       if attrPath == [] then e
-      else if e ? ${attr}
-      then attrByPath (tail attrPath) default e.${attr}
+      else if hasAttr attr e
+      then attrByPath (tail attrPath) default (getAttr attr e)
       else default;
 
 
@@ -43,7 +44,8 @@ rec {
        attrVals ["a" "b" "c"] as
        => [as.a as.b as.c]
   */
-  attrVals = nameList: set: map (x: set.${x}) nameList;
+  attrVals = nameList: set:
+    map (x: getAttr x set) nameList;
 
 
   /* Return the values of all attributes in the given set, sorted by
@@ -53,7 +55,7 @@ rec {
        attrValues {c = 3; a = 1; b = 2;}
        => [1 2 3]
   */
-  attrValues = builtins.attrValues or (attrs: attrVals (attrNames attrs) attrs);
+  attrValues = attrs: attrVals (attrNames attrs) attrs;
 
 
   /* Collect each attribute named `attr' from a list of attribute
@@ -63,8 +65,7 @@ rec {
        catAttrs "a" [{a = 1;} {b = 0;} {a = 2;}]
        => [1 2]
   */
-  catAttrs = builtins.catAttrs or
-    (attr: l: concatLists (map (s: if s ? ${attr} then [s.${attr}] else []) l));
+  catAttrs = attr: l: concatLists (map (s: if hasAttr attr s then [(getAttr attr s)] else []) l);
 
 
   /* Filter an attribute set by removing all attributes for which the
@@ -75,29 +76,9 @@ rec {
        => { foo = 1; }
   */
   filterAttrs = pred: set:
-    listToAttrs (concatMap (name: let v = set.${name}; in if pred name v then [(nameValuePair name v)] else []) (attrNames set));
+    listToAttrs (fold (n: ys: let v = getAttr n set; in if pred n v then [(nameValuePair n v)] ++ ys else ys) [] (attrNames set));
 
 
-  /* Filter an attribute set recursivelly by removing all attributes for
-     which the given predicate return false.
-
-     Example:
-       filterAttrsRecursive (n: v: v != null) { foo = { bar = null; }; }
-       => { foo = {}; }
-  */
-  filterAttrsRecursive = pred: set:
-    listToAttrs (
-      concatMap (name:
-        let v = set.${name}; in
-        if pred name v then [
-          (nameValuePair name (
-            if isAttrs v then filterAttrsRecursive pred v
-            else v
-          ))
-        ] else []
-      ) (attrNames set)
-    );
-
   /* foldAttrs: apply fold functions to values grouped by key. Eg accumulate values as list:
      foldAttrs (n: a: [n] ++ a) [] [{ a = 2; } { a = 3; }]
      => { a = [ 2 3 ]; }
@@ -105,7 +86,7 @@ rec {
   foldAttrs = op: nul: list_of_attrs:
     fold (n: a:
         fold (name: o:
-          o // (listToAttrs [{inherit name; value = op n.${name} (a.${name} or nul); }])
+          o // (listToAttrs [{inherit name; value = op (getAttr name n) (maybeAttr name nul a); }])
         ) a (attrNames n)
     ) {} list_of_attrs;
 
@@ -151,7 +132,7 @@ rec {
        => { x = "x-foo"; y = "y-bar"; }
   */
   mapAttrs = f: set:
-    listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set));
+    listToAttrs (map (attr: { name = attr; value = f attr (getAttr attr set); }) (attrNames set));
 
 
   /* Like `mapAttrs', but allows the name of each attribute to be
@@ -164,7 +145,7 @@ rec {
        => { foo_x = "bar-a"; foo_y = "bar-b"; }
   */
   mapAttrs' = f: set:
-    listToAttrs (map (attr: f attr set.${attr}) (attrNames set));
+    listToAttrs (map (attr: f attr (getAttr attr set)) (attrNames set));
 
 
   /* Call a function for each attribute in the given set and return
@@ -176,7 +157,7 @@ rec {
        => [ "xa" "yb" ]
   */
   mapAttrsToList = f: attrs:
-    map (name: f name attrs.${name}) (attrNames attrs);
+    map (name: f name (getAttr name attrs)) (attrNames attrs);
 
 
   /* Like `mapAttrs', except that it recursively applies itself to
@@ -241,16 +222,6 @@ rec {
   isDerivation = x: isAttrs x && x ? type && x.type == "derivation";
 
 
-  /* Convert a store path to a fake derivation. */
-  toDerivation = path:
-    let path' = builtins.storePath path; in
-    { type = "derivation";
-      name = builtins.unsafeDiscardStringContext (builtins.substring 33 (-1) (baseNameOf path'));
-      outPath = path';
-      outputs = [ "out" ];
-    };
-
-
   /* If the Boolean `cond' is true, return the attribute set `as',
      otherwise an empty attribute set. */
   optionalAttrs = cond: as: if cond then as else {};
@@ -351,7 +322,7 @@ rec {
   # override only the attributes that are already present in the old set
   # useful for deep-overriding
   overrideExisting = old: new:
-    old // listToAttrs (map (attr: nameValuePair attr (attrByPath [attr] old.${attr} new)) (attrNames old));
+    old // listToAttrs (map (attr: nameValuePair attr (attrByPath [attr] (getAttr attr old) new)) (attrNames old));
 
   deepSeqAttrs = x: y: deepSeqList (attrValues x) y;
 }

lib/composable-derivation.nix

@@ -1,74 +1,15 @@
 {lib, pkgs} :
 let inherit (lib) nv nvs; in
 {
-
-  # composableDerivation basically mixes these features:
-  # - fix function
-  # - mergeAttrBy
-  # - provides shortcuts for "options" such as "--enable-foo" and adding
-  #   buildInputs, see php example
+  # see for example:
+  # - development/interpreters/php_configurable/default.nix
+  # - .. search composableDerivation in all-packages.nix ..
   #
-  # It predates styles which are common today, such as
-  #  * the config attr
-  #  * mkDerivation.override feature
-  #  * overrideDerivation (lib/customization.nix)
-  #
-  # Some of the most more important usage examples (which could be rewritten if it was important):
-  # * php
-  # * postgis
-  # * vim_configurable
-  #
-  # A minimal example illustrating most features would look like this:
-  # let base = composableDerivation { (fixed : let inherit (fixed.fixed) name in {
-  #    src = fetchurl {
-  #    }
-  #    buildInputs = [A];
-  #    preConfigre = "echo ${name}";
-  #    # attention, "name" attr is missing, thus you cannot instantiate "base".
-  # }
-  # in {
-  #  # These all add name attribute, thus you can instantiate those:
-  #  v1 = base.merge   ({ name = "foo-add-B"; buildInputs = [B]; });       // B gets merged into buildInputs
-  #  v2 = base.merge   ({ name = "mix-in-pre-configure-lines" preConfigre = ""; });
-  #  v3 = base.replace ({ name = "foo-no-A-only-B;" buildInputs = [B]; });
-  # }
-  #
-  # So yes, you can think about it being something like nixos modules, and
-  # you'd be merging "features" in one at a time using .merge or .replace
-  # Thanks Shea for telling me that I rethink the documentation ..
-  #
-  # issues:
-  # * its complicated to understand
-  # * some "features" such as exact merge behaviour are burried in mergeAttrBy
-  #   and defaultOverridableDelayableArgs assuming the default behaviour does
-  #   the right thing in the common case
-  # * Eelco once said using such fix style functions are slow to evaluate
-  # * Too quick & dirty. Hard to understand for others. The benefit was that
-  #   you were able to create a kernel builder like base derivation and replace
-  #   / add patches the way you want without having to declare function arguments
-  #
-  # nice features:
-  # declaring "optional featuers" is modular. For instance:
-  #   flags.curl = {
-  #     configureFlags = ["--with-curl=${curl}" "--with-curlwrappers"];
-  #     buildInputs = [curl openssl];
-  #   };
-  #   flags.other = { .. }
-  # (Example taken from PHP)
-  #
-  # alternative styles / related features:
-  #  * Eg see function supporting building the kernel
-  #  * versionedDerivation (discussion about this is still going on - or ended)
-  #  * composedArgsAndFun
-  #  * mkDerivation.override
-  #  * overrideDerivation
-  #  * using { .., *Support ? false }: like configurable options.
-  # To find those examples use grep
-  #
-  # To sum up: It exists for historical reasons - and for most commonly used
-  # tasks the alternatives should be used
-  #
-  # If you have questions about this code ping Marc Weber.
+  # You should be able to override anything you like easily
+  # grep the mailinglist by title "python proposal" (dec 08)
+  # -> http://mail.cs.uu.nl/pipermail/nix-dev/2008-December/001571.html
+  # to see why this got complicated when using all its features
+  # TODO add newer example using new syntax (kernel derivation proposal -> mailinglist)
   composableDerivation = {
         mkDerivation ? pkgs.stdenv.mkDerivation,
 

lib/customisation.nix

@@ -1,7 +1,5 @@
-let
-
-  lib = import ./default.nix;
-  inherit (builtins) attrNames isFunction;
+let lib = import ./default.nix;
+    inherit (builtins) getAttr attrNames isFunction;
 
 in
 
@@ -31,8 +29,8 @@ rec {
 
      For another application, see build-support/vm, where this
      function is used to build arbitrary derivations inside a QEMU
-     virtual machine.
-  */
+     virtual machine. */
+     
   overrideDerivation = drv: f:
     let
       newDrv = derivation (drv.drvAttrs // (f drv));
@@ -51,23 +49,27 @@ rec {
        else { }));
 
 
+  # usage: (you can use override multiple times)
+  # let d = makeOverridable stdenv.mkDerivation { name = ..; buildInputs; }
+  #     noBuildInputs = d.override { buildInputs = []; }
+  #     additionalBuildInputs = d.override ( args : args // { buildInputs = args.buildInputs ++ [ additional ]; } )
   makeOverridable = f: origArgs:
     let
       ff = f origArgs;
-      overrideWith = newArgs: origArgs // (if builtins.isFunction newArgs then newArgs origArgs else newArgs);
     in
       if builtins.isAttrs ff then (ff //
-        { override = newArgs: makeOverridable f (overrideWith newArgs);
-          overrideDerivation = fdrv:
-            makeOverridable (args: overrideDerivation (f args) fdrv) origArgs;
+        { override = newArgs:
+            makeOverridable f (origArgs // (if builtins.isFunction newArgs then newArgs origArgs else newArgs));
+          deepOverride = newArgs:
+            makeOverridable f (lib.overrideExisting (lib.mapAttrs (deepOverrider newArgs) origArgs) newArgs);
         })
-      else if builtins.isFunction ff then
-        { override = newArgs: makeOverridable f (overrideWith newArgs);
-          __functor = self: ff;
-          overrideDerivation = throw "overrideDerivation not yet supported for functors";
-        }
       else ff;
 
+  deepOverrider = newArgs: name: x: if builtins.isAttrs x then (
+    if x ? deepOverride then (x.deepOverride newArgs) else
+    if x ? override then (x.override newArgs) else
+    x) else x;
+
 
   /* Call the package function in the file `fn' with the required
     arguments automatically.  The function is called with the
@@ -91,29 +93,10 @@ rec {
       };
   */
   callPackageWith = autoArgs: fn: args:
-    let
-      f = if builtins.isFunction fn then fn else import fn;
-      auto = builtins.intersectAttrs (builtins.functionArgs f) autoArgs;
-    in makeOverridable f (auto // args);
+    let f = if builtins.isFunction fn then fn else import fn; in
+    makeOverridable f ((builtins.intersectAttrs (builtins.functionArgs f) autoArgs) // args);
 
-
-  /* Like callPackage, but for a function that returns an attribute
-     set of derivations. The override function is added to the
-     individual attributes. */
-  callPackagesWith = autoArgs: fn: args:
-    let
-      f = if builtins.isFunction fn then fn else import fn;
-      auto = builtins.intersectAttrs (builtins.functionArgs f) autoArgs;
-      finalArgs = auto // args;
-      pkgs = f finalArgs;
-      mkAttrOverridable = name: pkg: pkg // {
-        override = newArgs: mkAttrOverridable name (f (finalArgs // newArgs)).${name};
-      };
-    in lib.mapAttrs mkAttrOverridable pkgs;
-
-
-  /* Add attributes to each output of a derivation without changing
-     the derivation itself. */
+  /* Add attributes to each output of a derivation without changing the derivation itself */
   addPassthru = drv: passthru:
     let
       outputs = drv.outputs or [ "out" ];
@@ -124,63 +107,10 @@ rec {
       outputToAttrListElement = outputName:
         { name = outputName;
           value = commonAttrs // {
-            inherit (drv.${outputName}) outPath drvPath type outputName;
+            inherit (builtins.getAttr outputName drv) outPath drvPath type outputName;
           };
         };
 
       outputsList = map outputToAttrListElement outputs;
-  in commonAttrs.${drv.outputName};
-
-
-  /* Strip a derivation of all non-essential attributes, returning
-     only those needed by hydra-eval-jobs. Also strictly evaluate the
-     result to ensure that there are no thunks kept alive to prevent
-     garbage collection. */
-  hydraJob = drv:
-    let
-      outputs = drv.outputs or ["out"];
-
-      commonAttrs =
-        { inherit (drv) name system meta; inherit outputs; }
-        // lib.optionalAttrs (drv._hydraAggregate or false) {
-          _hydraAggregate = true;
-          constituents = map hydraJob (lib.flatten drv.constituents);
-        }
-        // (lib.listToAttrs outputsList);
-
-      makeOutput = outputName:
-        let output = drv.${outputName}; in
-        { name = outputName;
-          value = commonAttrs // {
-            outPath = output.outPath;
-            drvPath = output.drvPath;
-            type = "derivation";
-            inherit outputName;
-          };
-        };
-
-      outputsList = map makeOutput outputs;
-
-      drv' = (lib.head outputsList).value;
-    in lib.deepSeq drv' drv';
-
-  /* Make a set of packages with a common scope. All packages called
-     with the provided `callPackage' will be evaluated with the same
-     arguments. Any package in the set may depend on any other. The
-     `override' function allows subsequent modification of the package
-     set in a consistent way, i.e. all packages in the set will be
-     called with the overridden packages. The package sets may be
-     hierarchical: the packages in the set are called with the scope
-     provided by `newScope' and the set provides a `newScope' attribute
-     which can form the parent scope for later package sets. */
-  makeScope = newScope: f:
-    let self = f self // {
-          newScope = scope: newScope (self // scope);
-          callPackage = self.newScope {};
-          override = g: makeScope newScope (self_:
-            let super = f self_;
-            in super // g super self_);
-        };
-    in self;
-
+  in builtins.getAttr drv.outputName commonAttrs;
 }

lib/debug.nix

@@ -9,16 +9,23 @@ in
 
 rec {
 
-  inherit (builtins) addErrorContext;
 
-  addErrorContextToAttrs = lib.mapAttrs (a: v: lib.addErrorContext "while evaluating ${a}" v);
+  # Wrapper aroung the primop `addErrorContext', which shouldn't used
+  # directly.  It evaluates and returns `val', but if an evaluation
+  # error occurs, the text in `msg' is added to the error context
+  # (stack trace) printed by Nix.
+  addErrorContext =
+    if builtins ? addErrorContext
+    then builtins.addErrorContext
+    else msg: val: val;
 
-  traceIf = p: msg: x: if p then trace msg x else x;
-
-  traceVal = x: trace x x;
-  traceXMLVal = x: trace (builtins.toXML x) x;
-  traceXMLValMarked = str: x: trace (str + builtins.toXML x) x;
+  addErrorContextToAttrs = lib.mapAttrs (a : v : lib.addErrorContext "while evaluating ${a}" v);
 
+  
+  traceVal = if builtins ? trace then x: (builtins.trace x x) else x: x;
+  traceXMLVal = if builtins ? trace then x: (builtins.trace (builtins.toXML x) x) else x: x;
+  traceXMLValMarked = str: if builtins ? trace then x: (builtins.trace ( str + builtins.toXML x) x) else x: x;
+  
   # this can help debug your code as well - designed to not produce thousands of lines
   traceShowVal = x : trace (showVal x) x;
   traceShowValMarked = str: x: trace (str + showVal x) x;
@@ -37,13 +44,12 @@ rec {
       else if isString x then "x is a string `${substring 0 50 x}...'"
       else "x is probably a path `${substring 0 50 (toString x)}...'";
 
-  # trace the arguments passed to function and its result
+  # trace the arguments passed to function and its result 
   # maybe rewrite these functions in a traceCallXml like style. Then one function is enough
   traceCall  = n : f : a : let t = n2 : x : traceShowValMarked "${n} ${n2}:" x; in t "result" (f (t "arg 1" a));
   traceCall2 = n : f : a : b : let t = n2 : x : traceShowValMarked "${n} ${n2}:" x; in t "result" (f (t "arg 1" a) (t "arg 2" b));
   traceCall3 = n : f : a : b : c : let t = n2 : x : traceShowValMarked "${n} ${n2}:" x; in t "result" (f (t "arg 1" a) (t "arg 2" b) (t "arg 3" c));
 
-  # FIXME: rename this?
   traceValIfNot = c: x:
     if c x then true else trace (showVal x) false;
 
@@ -64,7 +70,7 @@ rec {
 
       then [ { inherit name; expected = test.expected; result = test.expr; } ]
       else [] ) tests));
-
+  
   # create a test assuming that list elements are true
   # usage: { testX = allTrue [ true ]; }
   testAllTrue = expr : { inherit expr; expected = map (x: true) expr; };
@@ -103,11 +109,11 @@ rec {
       let nr = a;
       in (str: expr:
           if isFunction expr then
-            (arg:
+            (arg: 
               traceCallXml (builtins.add 1 nr) "${str}\n arg ${builtins.toString nr} is \n ${builtins.toXML (strict arg)}" (expr arg)
             )
-          else
+          else 
             let r = strict expr;
-            in trace "${str}\n result:\n${builtins.toXML r}" r
+            in builtins.trace "${str}\n result:\n${builtins.toXML r}" r
       );
 }

lib/default.nix

@@ -11,7 +11,7 @@ let
   types = import ./types.nix;
   meta = import ./meta.nix;
   debug = import ./debug.nix;
-  misc = import ./deprecated.nix;
+  misc = import ./misc.nix;
   maintainers = import ./maintainers.nix;
   platforms = import ./platforms.nix;
   systems = import ./systems.nix;

lib/deprecated.nix

@@ -1,423 +0,0 @@
-let lib = import ./default.nix;
-    inherit (builtins) isFunction head tail isList isAttrs isInt attrNames;
-
-in
-
-with import ./lists.nix;
-with import ./attrsets.nix;
-with import ./strings.nix;
-
-rec {
-
-  # returns default if env var is not set
-  maybeEnv = name: default:
-    let value = builtins.getEnv name; in
-    if value == "" then default else value;
-
-  defaultMergeArg = x : y: if builtins.isAttrs y then
-    y
-  else 
-    (y x);
-  defaultMerge = x: y: x // (defaultMergeArg x y);
-  foldArgs = merger: f: init: x: 
-    let arg=(merger init (defaultMergeArg init x));
-      # now add the function with composed args already applied to the final attrs
-        base = (setAttrMerge "passthru" {} (f arg) 
-                        ( z : z // rec { 
-                          function = foldArgs merger f arg; 
-			  args = (lib.attrByPath ["passthru" "args"] {} z) // x;
-                          } ));
-	withStdOverrides = base // {
-	   override = base.passthru.function;
-	   } ;
-        in
-	withStdOverrides;
-    
-
-  # predecessors: proposed replacement for applyAndFun (which has a bug cause it merges twice)
-  # the naming "overridableDelayableArgs" tries to express that you can
-  # - override attr values which have been supplied earlier
-  # - use attr values before they have been supplied by accessing the fix point
-  #   name "fixed"
-  # f: the (delayed overridden) arguments are applied to this
-  #
-  # initial: initial attrs arguments and settings. see defaultOverridableDelayableArgs
-  #
-  # returns: f applied to the arguments // special attributes attrs
-  #     a) merge: merge applied args with new args. Wether an argument is overridden depends on the merge settings
-  #     b) replace: this let's you replace and remove names no matter which merge function has been set
-  #
-  # examples: see test cases "res" below;
-  overridableDelayableArgs =
-          f :        # the function applied to the arguments
-          initial :  # you pass attrs, the functions below are passing a function taking the fix argument
-    let
-        takeFixed = if isFunction initial then initial else (fixed : initial); # transform initial to an expression always taking the fixed argument
-        tidy = args : 
-            let # apply all functions given in "applyPreTidy" in sequence
-                applyPreTidyFun = fold ( n : a : x : n ( a x ) ) lib.id (maybeAttr "applyPreTidy" [] args);
-            in removeAttrs (applyPreTidyFun args) ( ["applyPreTidy"] ++ (maybeAttr  "removeAttrs" [] args) ); # tidy up args before applying them
-        fun = n : x :
-             let newArgs = fixed :
-                     let args = takeFixed fixed; 
-                         mergeFun = args.${n};
-                     in if isAttrs x then (mergeFun args x)
-                        else assert isFunction x;
-                             mergeFun args (x ( args // { inherit fixed; }));
-             in overridableDelayableArgs f newArgs;
-    in
-    (f (tidy (lib.fix takeFixed))) // {
-      merge   = fun "mergeFun";
-      replace = fun "keepFun";
-    };
-  defaultOverridableDelayableArgs = f : 
-      let defaults = {
-            mergeFun = mergeAttrByFunc; # default merge function. merge strategie (concatenate lists, strings) is given by mergeAttrBy
-            keepFun = a : b : { inherit (a) removeAttrs mergeFun keepFun mergeAttrBy; } // b; # even when using replace preserve these values
-            applyPreTidy = []; # list of functions applied to args before args are tidied up (usage case : prepareDerivationArgs)
-            mergeAttrBy = mergeAttrBy // {
-              applyPreTidy = a : b : a ++ b;
-              removeAttrs = a : b: a ++ b;
-            };
-            removeAttrs = ["mergeFun" "keepFun" "mergeAttrBy" "removeAttrs" "fixed" ]; # before applying the arguments to the function make sure these names are gone
-          };
-      in (overridableDelayableArgs f defaults).merge;
-
-
-
-  # rec { # an example of how composedArgsAndFun can be used
-  #  a  = composedArgsAndFun (x : x) { a = ["2"]; meta = { d = "bar";}; };
-  #  # meta.d will be lost ! It's your task to preserve it (eg using a merge function)
-  #  b  = a.passthru.function { a = [ "3" ]; meta = { d2 = "bar2";}; };
-  #  # instead of passing/ overriding values you can use a merge function:
-  #  c  = b.passthru.function ( x: { a = x.a  ++ ["4"]; }); # consider using (maybeAttr "a" [] x)
-  # }
-  # result:
-  # {
-  #   a = { a = ["2"];     meta = { d = "bar"; }; passthru = { function = .. }; };
-  #   b = { a = ["3"];     meta = { d2 = "bar2"; }; passthru = { function = .. }; };
-  #   c = { a = ["3" "4"]; meta = { d2 = "bar2"; }; passthru = { function = .. }; };
-  #   # c2 is equal to c
-  # }
-  composedArgsAndFun = f: foldArgs defaultMerge f {};
-
-
-  # shortcut for attrByPath ["name"] default attrs
-  maybeAttrNullable = maybeAttr;
-
-  # shortcut for attrByPath ["name"] default attrs
-  maybeAttr = name: default: attrs: attrs.${name} or default;
-
-
-  # Return the second argument if the first one is true or the empty version
-  # of the second argument.
-  ifEnable = cond: val:
-    if cond then val
-    else if builtins.isList val then []
-    else if builtins.isAttrs val then {}
-    # else if builtins.isString val then ""
-    else if val == true || val == false then false
-    else null;
-
-    
-  # Return true only if there is an attribute and it is true.
-  checkFlag = attrSet: name:
-        if name == "true" then true else
-        if name == "false" then false else
-        if (elem name (attrByPath ["flags"] [] attrSet)) then true else
-        attrByPath [name] false attrSet ;
-
-
-  # Input : attrSet, [ [name default] ... ], name
-  # Output : its value or default.
-  getValue = attrSet: argList: name:
-  ( attrByPath [name] (if checkFlag attrSet name then true else
-        if argList == [] then null else
-        let x = builtins.head argList; in
-                if (head x) == name then 
-                        (head (tail x))
-                else (getValue attrSet 
-                        (tail argList) name)) attrSet );
-
-                        
-  # Input : attrSet, [[name default] ...], [ [flagname reqs..] ... ]
-  # Output : are reqs satisfied? It's asserted.
-  checkReqs = attrSet : argList : condList :
-  (
-    fold lib.and true 
-      (map (x: let name = (head x) ; in
-        
-        ((checkFlag attrSet name) -> 
-        (fold lib.and true
-        (map (y: let val=(getValue attrSet argList y); in
-                (val!=null) && (val!=false)) 
-        (tail x))))) condList)) ;
-        
-
-  # This function has O(n^2) performance.
-  uniqList = {inputList, acc ? []} :
-    let go = xs : acc :
-             if xs == []
-             then []
-             else let x = head xs;
-                      y = if elem x acc then [] else [x];
-                  in y ++ go (tail xs) (y ++ acc);
-    in go inputList acc;
-
-  uniqListExt = {inputList, outputList ? [],
-    getter ? (x : x), compare ? (x: y: x==y)}:
-        if inputList == [] then outputList else
-        let x=head inputList; 
-        isX = y: (compare (getter y) (getter x));
-        newOutputList = outputList ++
-         (if any isX outputList then [] else [x]);
-        in uniqListExt {outputList=newOutputList; 
-                inputList = (tail inputList);
-                inherit getter compare;
-                };
-
-
-                
-  condConcat = name: list: checker:
-        if list == [] then name else
-        if checker (head list) then 
-                condConcat 
-                        (name + (head (tail list))) 
-                        (tail (tail list)) 
-                        checker
-        else condConcat
-                name (tail (tail list)) checker;
-
-  lazyGenericClosure = {startSet, operator}:
-    let
-      work = list: doneKeys: result:
-        if list == [] then
-          result
-        else
-          let x = head list; key = x.key; in
-          if elem key doneKeys then
-            work (tail list) doneKeys result
-          else
-            work (tail list ++ operator x) ([key] ++ doneKeys) ([x] ++ result);
-    in
-      work startSet [] [];
-
-  innerModifySumArgs = f: x: a: b: if b == null then (f a b) // x else 
-        innerModifySumArgs f x (a // b);
-  modifySumArgs = f: x: innerModifySumArgs f x {};
-
-
-  innerClosePropagation = acc : xs :
-    if xs == []
-    then acc
-    else let y  = head xs;
-             ys = tail xs;
-         in if ! isAttrs y
-            then innerClosePropagation acc ys
-            else let acc' = [y] ++ acc;
-                 in innerClosePropagation
-                      acc'
-                      (uniqList { inputList = (maybeAttrNullable "propagatedBuildInputs" [] y)
-                                           ++ (maybeAttrNullable "propagatedNativeBuildInputs" [] y)
-                                           ++ ys;
-                                  acc = acc';
-                                }
-                      );
-
-  closePropagation = list: (uniqList {inputList = (innerClosePropagation [] list);});
-
-  # calls a function (f attr value ) for each record item. returns a list
-  mapAttrsFlatten = f : r : map (attr: f attr r.${attr}) (attrNames r);
-
-  # attribute set containing one attribute
-  nvs = name : value : listToAttrs [ (nameValuePair name value) ];
-  # adds / replaces an attribute of an attribute set
-  setAttr = set : name : v : set // (nvs name v);
-
-  # setAttrMerge (similar to mergeAttrsWithFunc but only merges the values of a particular name)
-  # setAttrMerge "a" [] { a = [2];} (x : x ++ [3]) -> { a = [2 3]; } 
-  # setAttrMerge "a" [] {         } (x : x ++ [3]) -> { a = [  3]; }
-  setAttrMerge = name : default : attrs : f :
-    setAttr attrs name (f (maybeAttr name default attrs));
-
-  # Using f = a : b = b the result is similar to //
-  # merge attributes with custom function handling the case that the attribute
-  # exists in both sets
-  mergeAttrsWithFunc = f : set1 : set2 :
-    fold (n: set : if set ? ${n}
-                        then setAttr set n (f set.${n} set2.${n})
-                        else set )
-           (set2 // set1) (attrNames set2);
-
-  # merging two attribute set concatenating the values of same attribute names
-  # eg { a = 7; } {  a = [ 2 3 ]; } becomes { a = [ 7 2 3 ]; }
-  mergeAttrsConcatenateValues = mergeAttrsWithFunc ( a : b : (toList a) ++ (toList b) );
-
-  # merges attributes using //, if a name exisits in both attributes
-  # an error will be triggered unless its listed in mergeLists
-  # so you can mergeAttrsNoOverride { buildInputs = [a]; } { buildInputs = [a]; } {} to get
-  # { buildInputs = [a b]; }
-  # merging buildPhase does'nt really make sense. The cases will be rare where appending /prefixing will fit your needs?
-  # in these cases the first buildPhase will override the second one
-  # ! deprecated, use mergeAttrByFunc instead
-  mergeAttrsNoOverride = { mergeLists ? ["buildInputs" "propagatedBuildInputs"],
-                           overrideSnd ? [ "buildPhase" ]
-                         } : attrs1 : attrs2 :
-    fold (n: set : 
-        setAttr set n ( if set ? ${n}
-            then # merge 
-              if elem n mergeLists # attribute contains list, merge them by concatenating
-                then attrs2.${n} ++ attrs1.${n}
-              else if elem n overrideSnd
-                then attrs1.${n}
-              else throw "error mergeAttrsNoOverride, attribute ${n} given in both attributes - no merge func defined"
-            else attrs2.${n} # add attribute not existing in attr1
-           )) attrs1 (attrNames attrs2);
-
-
-  # example usage:
-  # mergeAttrByFunc  {
-  #   inherit mergeAttrBy; # defined below
-  #   buildInputs = [ a b ];
-  # } {
-  #  buildInputs = [ c d ];
-  # };
-  # will result in
-  # { mergeAttrsBy = [...]; buildInputs = [ a b c d ]; }
-  # is used by prepareDerivationArgs, defaultOverridableDelayableArgs and can be used when composing using
-  # foldArgs, composedArgsAndFun or applyAndFun. Example: composableDerivation in all-packages.nix
-  mergeAttrByFunc = x : y :
-    let
-          mergeAttrBy2 = { mergeAttrBy=lib.mergeAttrs; }
-                      // (maybeAttr "mergeAttrBy" {} x)
-                      // (maybeAttr "mergeAttrBy" {} y); in
-    fold lib.mergeAttrs {} [
-      x y
-      (mapAttrs ( a : v : # merge special names using given functions
-          if x ? ${a}
-             then if y ? ${a}
-               then v x.${a} y.${a} # both have attr, use merge func
-               else x.${a} # only x has attr
-             else y.${a} # only y has attr)
-          ) (removeAttrs mergeAttrBy2
-                         # don't merge attrs which are neither in x nor y
-                         (filter (a: ! x ? ${a} && ! y ? ${a})
-                                 (attrNames mergeAttrBy2))
-            )
-      )
-    ];
-  mergeAttrsByFuncDefaults = foldl mergeAttrByFunc { inherit mergeAttrBy; };
-  mergeAttrsByFuncDefaultsClean = list: removeAttrs (mergeAttrsByFuncDefaults list) ["mergeAttrBy"];
-
-  # merge attrs based on version key into mkDerivation args, see mergeAttrBy to learn about smart merge defaults
-  #
-  # This function is best explained by an example:
-  #
-  #     {version ? "2.x"} :
-  #
-  #     mkDerivation (mergeAttrsByVersion "package-name" version 
-  #       { # version specific settings
-  #         "git" = { src = ..; preConfigre = "autogen.sh"; buildInputs = [automake autoconf libtool];  };
-  #         "2.x" = { src = ..; };
-  #       }
-  #       {  // shared settings
-  #          buildInputs = [ common build inputs ];
-  #          meta = { .. }
-  #       }
-  #     )
-  #
-  # Please note that e.g. Eelco Dolstra usually prefers having one file for
-  # each version. On the other hand there are valuable additional design goals
-  #  - readability
-  #  - do it once only
-  #  - try to avoid duplication
-  #
-  # Marc Weber and Michael Raskin sometimes prefer keeping older
-  # versions around for testing and regression tests - as long as its cheap to
-  # do so.
-  #
-  # Very often it just happens that the "shared" code is the bigger part.
-  # Then using this function might be appropriate.
-  #
-  # Be aware that its easy to cause recompilations in all versions when using
-  # this function - also if derivations get too complex splitting into multiple
-  # files is the way to go.
-  #
-  # See misc.nix -> versionedDerivation
-  # discussion: nixpkgs: pull/310
-  mergeAttrsByVersion = name: version: attrsByVersion: base:
-    mergeAttrsByFuncDefaultsClean [ { name = "${name}-${version}"; } base (maybeAttr version (throw "bad version ${version} for ${name}") attrsByVersion)];
-
-  # sane defaults (same name as attr name so that inherit can be used)
-  mergeAttrBy = # { buildInputs = concatList; [...]; passthru = mergeAttr; [..]; }
-    listToAttrs (map (n : nameValuePair n lib.concat)
-      [ "nativeBuildInputs" "buildInputs" "propagatedBuildInputs" "configureFlags" "prePhases" "postAll" "patches" ])
-    // listToAttrs (map (n : nameValuePair n lib.mergeAttrs) [ "passthru" "meta" "cfg" "flags" ])
-    // listToAttrs (map (n : nameValuePair n (a: b: "${a}\n${b}") ) [ "preConfigure" "postInstall" ])
-  ;
-
-  # prepareDerivationArgs tries to make writing configurable derivations easier
-  # example:
-  #  prepareDerivationArgs {
-  #    mergeAttrBy = {
-  #       myScript = x : y : x ++ "\n" ++ y;
-  #    };
-  #    cfg = {
-  #      readlineSupport = true;
-  #    };
-  #    flags = {
-  #      readline = {
-  #        set = {
-  #           configureFlags = [ "--with-compiler=${compiler}" ];
-  #           buildInputs = [ compiler ];
-  #           pass = { inherit compiler; READLINE=1; };
-  #           assertion = compiler.dllSupport;
-  #           myScript = "foo";
-  #        };
-  #        unset = { configureFlags = ["--without-compiler"]; };
-  #      };
-  #    };
-  #    src = ...
-  #    buildPhase = '' ... '';
-  #    name = ...
-  #    myScript = "bar";
-  #  };
-  # if you don't have need for unset you can omit the surrounding set = { .. } attr
-  # all attrs except flags cfg and mergeAttrBy will be merged with the
-  # additional data from flags depending on config settings
-  # It's used in composableDerivation in all-packages.nix. It's also used
-  # heavily in the new python and libs implementation
-  #
-  # should we check for misspelled cfg options?
-  # TODO use args.mergeFun here as well?
-  prepareDerivationArgs = args:
-    let args2 = { cfg = {}; flags = {}; } // args;
-        flagName = name : "${name}Support";
-        cfgWithDefaults = (listToAttrs (map (n : nameValuePair (flagName n) false) (attrNames args2.flags)))
-                          // args2.cfg;
-        opts = attrValues (mapAttrs (a : v :
-                let v2 = if v ? set || v ? unset then v else { set = v; };
-                    n = if cfgWithDefaults.${flagName a} then "set" else "unset";
-                    attr = maybeAttr n {} v2; in
-                if (maybeAttr "assertion" true attr)
-                  then attr
-                  else throw "assertion of flag ${a} of derivation ${args.name} failed"
-               ) args2.flags );
-    in removeAttrs
-      (mergeAttrsByFuncDefaults ([args] ++ opts ++ [{ passthru = cfgWithDefaults; }]))
-      ["flags" "cfg" "mergeAttrBy" ];
-
-
-  nixType = x:
-      if isAttrs x then
-          if x ? outPath then "derivation"
-          else "aattrs"
-      else if isFunction x then "function"
-      else if isList x then "list"
-      else if x == true then "bool"
-      else if x == false then "bool"
-      else if x == null then "null"
-      else if isInt x then "int"
-      else "string";
-
-}

lib/licenses.nix

@@ -1,466 +1,263 @@
-let
-
-  lib = import ./default.nix;
-
-  spdx = lic: lic // {
-    url = "http://spdx.org/licenses/${lic.spdxId}";
-  };
-
-in
-
-lib.mapAttrs (n: v: v // { shortName = n; }) rec {
-  /* License identifiers from spdx.org where possible.
+{
+  /* License identifiers loosely based on: http://fedoraproject.org/wiki/Licensing
    * If you cannot find your license here, then look for a similar license or
    * add it to this list. The URL mentioned above is a good source for inspiration.
    */
 
-  afl21 = spdx {
-    spdxId = "AFL-2.1";
-    fullName = "Academic Free License";
+  artistic2 = {
+    shortName = "Artistic 2.0";
+    fullName = "Artistic 2.0";
+    url = "http://opensource.org/licenses/artistic-license-2.0.php";
   };
 
-  agpl3 = spdx {
-    spdxId = "AGPL-3.0";
-    fullName = "GNU Affero General Public License v3.0";
+  agpl3 = {
+    shortName = "AGPLv3";
+    fullName = "GNU Affero General Public License version 3 only";
+    url = https://www.gnu.org/licenses/agpl.html;
   };
 
   agpl3Plus = {
-    fullName = "GNU Affero General Public License v3.0 or later";
-    inherit (agpl3) url;
-  };
-
-  amazonsl = {
-    fullName = "Amazon Software License";
-    url = http://aws.amazon.com/asl/;
-    free = false;
+    shortName = "AGPLv3+";
+    fullName = "GNU Affero General Public License version 3 or later";
+    url = https://www.gnu.org/licenses/agpl.html;
   };
 
   amd = {
+    shortName = "amd";
     fullName = "AMD License Agreement";
     url = http://developer.amd.com/amd-license-agreement/;
-  };
+  };#
 
-  apsl20 = spdx {
-    spdxId = "APSL-2.0";
+  apsl20 = {
+    shortName = "APSL 2.0";
     fullName = "Apple Public Source License 2.0";
+    url = http://opensource.org/licenses/APSL-2.0;
   };
 
-  artistic1 = spdx {
-    spdxId = "Artistic-1.0";
-    fullName = "Artistic License 1.0";
+  asl20 = {
+    shortName = "ASL2.0";
+    fullName = "Apache Software License 2.0";
+    url = http://www.apache.org/licenses/LICENSE-2.0;
   };
 
-  artistic2 = spdx {
-    spdxId = "Artistic-2.0";
-    fullName = "Artistic License 2.0";
+  boost = {
+    shortName = "boost";
+    fullName = "Boost Software License";
+    url = http://www.boost.org/LICENSE_1_0.txt;
   };
 
-  asl20 = spdx {
-    spdxId = "Apache-2.0";
-    fullName = "Apache License 2.0";
+  bsd2 = {
+    shortName = "BSD-2";
+    fullName = "BSD license (2 clause)";
+    url = http://opensource.org/licenses/BSD-2-Clause;
   };
 
-  boost = spdx {
-    spdxId = "BSL-1.0";
-    fullName = "Boost Software License 1.0";
+  bsd3 = {
+    shortName = "BSD-3";
+    fullName = "BSD license (3 clause)";
+    url = http://opensource.org/licenses/BSD-3-Clause;
   };
 
-  bsd2 = spdx {
-    spdxId = "BSD-2-Clause";
-    fullName = ''BSD 2-clause "Simplified" License'';
+  bsdOriginal = {
+    shortName = "BSD-original";
+    fullName = "Original BSD license with advertising clause";
+    url = https://fedoraproject.org/wiki/Licensing/BSD;
   };
 
-  bsd3 = spdx {
-    spdxId = "BSD-3-Clause";
-    fullName = ''BSD 3-clause "New" or "Revised" License'';
-  };
-
-  bsdOriginal = spdx {
-    spdxId = "BSD-4-Clause";
-    fullName = ''BSD 4-clause "Original" or "Old" License'';
-  };
-
-  cc0 = spdx {
-    spdxId = "CC0-1.0";
-    fullName = "Creative Commons Zero v1.0 Universal";
-  };
-
-  cc-by-sa-25 = spdx {
-    spdxId = "CC-BY-SA-2.5";
-    fullName = "Creative Commons Attribution Share Alike 2.5";
-  };
-
-  cc-by-30 = spdx {
-    spdxId = "CC-BY-3.0";
+  cc-by-30 = {
+    shortName = "CC BY 3.0";
     fullName = "Creative Commons Attribution 3.0";
+    url = http://creativecommons.org/licenses/by/3.0;
   };
 
-  cc-by-sa-30 = spdx {
-    spdxId = "CC-BY-SA-3.0";
-    fullName = "Creative Commons Attribution Share Alike 3.0";
+  cddl = {
+    shortName = "CDDL";
+    fullName = "Common Development Distribution License ";
+    url = http://www.opensolaris.org/os/licensing/cddllicense.txt;
   };
 
-  cc-by-40 = spdx {
-    spdxId = "CC-BY-4.0";
-    fullName = "Creative Commons Attribution 4.0";
+  cpl10 = {
+    shortName = "CPL 1.0";
+    fullName = "Common Public License version 1.0";
+    url = http://www.eclipse.org/legal/cpl-v10.html;
   };
 
-  cc-by-sa-40 = spdx {
-    spdxId = "CC-BY-SA-4.0";
-    fullName = "Creative Commons Attribution Share Alike 4.0";
+  epl10 = {
+    shortName = "EPL 1.0";
+    fullName = "Eclipse Public License version 1.0";
+    url = http://www.eclipse.org/legal/epl-v10.html;
   };
 
-  cddl = spdx {
-    spdxId = "CDDL-1.0";
-    fullName = "Common Development and Distribution License 1.0";
-  };
-
-  cecill20 = spdx {
-    spdxId = "CECILL-2.0";
-    fullName = "CeCILL Free Software License Agreement v2.0";
-  };
-
-  cecill-b = spdx {
-    spdxId = "CECILL-B";
-    fullName  = "CeCILL-B Free Software License Agreement";
-  };
-
-  cecill-c = spdx {
-    spdxId = "CECILL-C";
-    fullName  = "CeCILL-C Free Software License Agreement";
-  };
-
-  cpl10 = spdx {
-    spdxId = "CPL-1.0";
-    fullName = "Common Public License 1.0";
-  };
-
-  efl10 = spdx {
-    spdxId = "EFL-1.0";
-    fullName = "Eiffel Forum License v1.0";
-  };
-
-  efl20 = spdx {
-    spdxId = "EFL-2.0";
-    fullName = "Eiffel Forum License v2.0";
-  };
-
-  epl10 = spdx {
-    spdxId = "EPL-1.0";
-    fullName = "Eclipse Public License 1.0";
-  };
-
-  fdl12 = spdx {
-    spdxId = "GFDL-1.2";
-    fullName = "GNU Free Documentation License v1.2";
-  };
-
-  fdl13 = spdx {
-    spdxId = "GFDL-1.3";
-    fullName = "GNU Free Documentation License v1.2";
-  };
-
-  free = {
-    fullName = "Unspecified free software license";
-  };
-
-  gpl1 = spdx {
-    spdxId = "GPL-1.0";
-    fullName = "GNU General Public License v1.0 only";
-  };
-
-  gpl1Plus = spdx {
-    spdxId = "GPL-1.0+";
-    fullName = "GNU General Public License v1.0 or later";
-  };
-
-  gpl2 = spdx {
-    spdxId = "GPL-2.0";
-    fullName = "GNU General Public License v2.0 only";
-  };
-
-  gpl2ClasspathPlus = {
-    fullName = "GNU General Public License v2.0 or later (with Classpath exception)";
-    url = https://fedoraproject.org/wiki/Licensing/GPL_Classpath_Exception;
+  gpl2 = {
+    shortName = "GPLv2";
+    fullName = "GNU General Public License version 2";
+    url = http://www.gnu.org/licenses/old-licenses/gpl-2.0.html;
   };
 
   gpl2Oss = {
+    shortName = "GPLv2+OSS";
     fullName = "GNU General Public License version 2 only (with OSI approved licenses linking exception)";
     url = http://www.mysql.com/about/legal/licensing/foss-exception;
   };
 
-  gpl2Plus = spdx {
-    spdxId = "GPL-2.0+";
-    fullName = "GNU General Public License v2.0 or later";
+  gpl2Plus = {
+    shortName = "GPLv2+";
+    fullName = "GNU General Public License version 2 or later";
+    url = http://www.gnu.org/licenses/old-licenses/gpl-2.0.html;
   };
 
-  gpl3 = spdx {
-    spdxId = "GPL-3.0";
-    fullName = "GNU General Public License v3.0 only";
+  gpl3 = {
+    shortName = "GPLv3";
+    fullName = "GNU General Public License version 3 only";
+    url = http://www.fsf.org/licensing/licenses/gpl.html;
   };
 
-  gpl3Plus = spdx {
-    spdxId = "GPL-3.0+";
-    fullName = "GNU General Public License v3.0 or later";
+  gpl3Plus = {
+    shortName = "GPLv3+";
+    fullName = "GNU General Public License version 3 or later";
+    url = http://www.fsf.org/licensing/licenses/gpl.html;
   };
 
   gpl3ClasspathPlus = {
-    fullName = "GNU General Public License v3.0 or later (with Classpath exception)";
+    shortName = "GPLv3+classpath+";
+    fullName = "GNU General Public License version 3 or later (with Classpath exception)";
     url = https://fedoraproject.org/wiki/Licensing/GPL_Classpath_Exception;
   };
 
-  # Intel's license, seems free
-  iasl = {
-    fullName = "iASL";
-    url = http://www.calculate-linux.org/packages/licenses/iASL;
+  isc = {
+    shortName = "ISC";
+    fullName = "Internet Systems Consortium License";
+    url = http://www.opensource.org/licenses/ISC;
   };
 
-  ijg = spdx {
-    spdxId = "IJG";
+  ipl10 = {
+    shortName = "IPL 1.0";
+    fullName = "IBM Public License Version 1.0";
+    url = http://www.ibm.com/developerworks/opensource/library/os-i18n2/os-ipl.html;
+  };
+
+  ijg = {
+    shortName = "IJG";
     fullName = "Independent JPEG Group License";
+    url = https://fedoraproject.org/wiki/Licensing/IJG;
   };
 
-  inria = {
-    fullName  = "INRIA Non-Commercial License Agreement";
-    url       = "http://compcert.inria.fr/doc/LICENSE";
+  libtiff = {
+    shortName = "libtiff";
+    fullName = "libtiff license";
+    url = https://fedoraproject.org/wiki/Licensing/libtiff;
   };
 
-  ipa = spdx {
-    spdxId = "IPA";
-    fullName = "IPA Font License";
+  lgpl2 = {
+    shortName = "LGPLv2";
+    fullName = "GNU Library General Public License version 2";
+    url = http://www.gnu.org/licenses/old-licenses/lgpl-2.0.html;
   };
 
-  ipl10 = spdx {
-    spdxId = "IPL-1.0";
-    fullName = "IBM Public License v1.0";
+  lgpl2Plus = {
+    shortName = "LGPLv2+";
+    fullName = "GNU Library General Public License version 2 or later";
+    url = http://www.gnu.org/licenses/old-licenses/lgpl-2.0.html;
   };
 
-  isc = spdx {
-    spdxId = "ISC";
-    fullName = "ISC License";
+  lgpl21 = {
+    shortName = "LGPLv2.1";
+    fullName = "GNU Lesser General Public License version 2.1";
+    url = http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html;
   };
 
-  lgpl2 = spdx {
-    spdxId = "LGPL-2.0";
-    fullName = "GNU Library General Public License v2 only";
-  };
-
-  lgpl2Plus = spdx {
-    spdxId = "LGPL-2.0+";
-    fullName = "GNU Library General Public License v2 or later";
-  };
-
-  lgpl21 = spdx {
-    spdxId = "LGPL-2.1";
-    fullName = "GNU Library General Public License v2.1 only";
-  };
-
-  lgpl21Plus = spdx {
-    spdxId = "LGPL-2.1+";
-    fullName = "GNU Library General Public License v2.1 or later";
-  };
-
-  lgpl3 = spdx {
-    spdxId = "LGPL-3.0";
-    fullName = "GNU Lesser General Public License v3.0 only";
-  };
-
-  lgpl3Plus = spdx {
-    spdxId = "LGPL-3.0+";
-    fullName = "GNU Lesser General Public License v3.0 or later";
-  };
-
-  libpng = spdx {
-    spdxId = "Libpng";
-    fullName = "libpng License";
-  };
-
-  libtiff = spdx {
-    spdxId = "libtiff";
-    fullName = "libtiff License";
+  lgpl21Plus = {
+    shortName = "LGPLv2.1+";
+    fullName = "GNU Lesser General Public License version 2.1 or later";
+    url = http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html;
   };
 
   llgpl21 = {
+    shortName = "LLGPLv2.1";
     fullName = "Lisp LGPL; GNU Lesser General Public License version 2.1 with Franz Inc. preamble for clarification of LGPL terms in context of Lisp";
     url = http://opensource.franz.com/preamble.html;
   };
 
-  lppl12 = spdx {
-    spdxId = "LPPL-1.2";
-    fullName = "LaTeX Project Public License v1.2";
+  lgpl3 = {
+    shortName = "LGPLv3";
+    fullName = "GNU Lesser General Public License version 3 only";
+    url = http://www.fsf.org/licensing/licenses/lgpl.html;
   };
 
-  lppl13c = spdx {
-    spdxId = "LPPL-1.3c";
-    fullName = "LaTeX Project Public License v1.3c";
+  lgpl3Plus = {
+    shortName = "LGPLv3+";
+    fullName = "GNU Lesser General Public License version 3 or later";
+    url = http://www.fsf.org/licensing/licenses/lgpl.html;
   };
 
-  lpl-102 = spdx {
-    spdxId = "LPL-1.02";
-    fullName = "Lucent Public License v1.02";
+  mit = {
+    shortName = "MIT";
+    fullName = "MIT/X11 license";
+    url = http://www.opensource.org/licenses/mit-license.php;
   };
 
-  # spdx.org does not (yet) differentiate between the X11 and Expat versions
-  # for details see http://en.wikipedia.org/wiki/MIT_License#Various_versions
-  mit = spdx {
-    spdxId = "MIT";
-    fullName = "MIT License";
+  mpl11 = {
+    shortName = "MPL1.1";
+    fullName = "Mozilla Public License version 1.1";
+    url = http://www.mozilla.org/MPL/MPL-1.1.html;
   };
 
-  mpl10 = spdx {
-    spdxId = "MPL-1.0";
-    fullName = "Mozilla Public License 1.0";
+  mpl20 = {
+    shortName = "MPL2.0";
+    fullName = "Mozilla Public License version 2.0";
+    url = https://www.mozilla.org/MPL/2.0;
   };
 
-  mpl11 = spdx {
-    spdxId = "MPL-1.1";
-    fullName = "Mozilla Public License 1.1";
-  };
-
-  mpl20 = spdx {
-    spdxId = "MPL-2.0";
-    fullName = "Mozilla Public License 2.0";
-  };
-
-  msrla = {
-    fullName  = "Microsoft Research License Agreement";
-    url       = "http://research.microsoft.com/en-us/projects/pex/msr-la.txt";
-  };
-
-  ncsa = spdx {
-    spdxId = "NCSA";
-    fullName  = "University of Illinois/NCSA Open Source License";
-  };
-
-  notion_lgpl = {
-    url = "https://raw.githubusercontent.com/raboof/notion/master/LICENSE";
-    fullName = "Notion modified LGPL";
-  };
-  
-  ofl = spdx {
-    spdxId = "OFL-1.1";
-    fullName = "SIL Open Font License 1.1";
-  };
-
-  openldap = spdx {
-    spdxId = "OLDAP-2.8";
-    fullName = "Open LDAP Public License v2.8";
-  };
-
-  openssl = spdx {
-    spdxId = "OpenSSL";
-    fullName = "OpenSSL License";
-  };
-
-  php301 = spdx {
-    spdxId = "PHP-3.01";
-    fullName = "PHP License v3.01";
-  };
-
-  postgresql = spdx {
-    spdxId = "PostgreSQL";
-    fullName = "PostgreSQL License";
-  };
-
-  psfl = spdx {
-    spdxId = "Python-2.0";
-    fullName = "Python Software Foundation License version 2";
-    #url = http://docs.python.org/license.html;
+  openssl = {
+    shortName = "openssl";
+    fullName = "OpenSSL license";
+    url = http://www.openssl.org/source/license.html;
   };
 
   publicDomain = {
-    fullName = "Public Domain";
+    shortName = "Public Domain";
+    fullname = "Public Domain";
   };
 
-  qpl = spdx {
-    spdxId = "QPL-1.0";
-    fullName = "Q Public License 1.0";
+  psfl = {
+    shortName = "PSFL";
+    fullName = "Python Software Foundation License";
+    url = http://docs.python.org/license.html;
   };
 
-  qwt = {
-    fullName = "Qwt License, Version 1.0";
-    url = http://qwt.sourceforge.net/qwtlicense.html;
+  tcltk = {
+    shortName = "Tcl/Tk";
+    fullName = "Tcl/Tk license";
+    url = http://www.tcl.tk/software/tcltk/license.html;
   };
 
-  ruby = spdx {
-    spdxId = "Ruby";
-    fullName = "Ruby License";
+  unfree = "unfree";
+
+  unfreeRedistributable = "unfree-redistributable";
+
+  unfreeRedistributableFirmware = "unfree-redistributable-firmware";
+
+  zlib = {
+    shortName = "zlib";
+    fullName = "zlib license";
+    url = http://www.gzip.org/zlib/zlib_license.html;
   };
 
-  sgi-b-20 = spdx {
-    spdxId = "SGI-B-2.0";
-    fullName = "SGI Free Software License B v2.0";
-  };
-
-  sleepycat = spdx {
-    spdxId = "Sleepycat";
-    fullName = "Sleepycat License";
-  };
-
-  tcltk = spdx {
-    spdxId = "TCL";
-    fullName = "TCL/TK License";
-  };
-
-  unfree = {
-    fullName = "Unfree";
-    free = false;
-  };
-
-  unfreeRedistributable = {
-    fullName = "Unfree redistributable";
-    free = false;
-  };
-
-  unfreeRedistributableFirmware = {
-    fullName = "Unfree redistributable firmware";
-    # Note: we currently consider these "free" for inclusion in the
-    # channel and NixOS images.
-  };
-
-  unlicense = spdx {
-    spdxId = "Unlicense";
-    fullName = "The Unlicense";
-  };
-
-  vim = spdx {
-    spdxId = "Vim";
-    fullName = "Vim License";
-  };
-
-  vsl10 = spdx {
-    spdxId = "VSL-1.0";
-    fullName = "Vovida Software License v1.0";
-  };
-
-  w3c = spdx {
-    spdxId = "W3C";
-    fullName = "W3C Software Notice and License";
-  };
-
-  wadalab = {
-    fullName = "Wadalab Font License";
-    url = https://fedoraproject.org/wiki/Licensing:Wadalab?rd=Licensing/Wadalab;
-  };
-
-  wtfpl = spdx {
-    spdxId = "WTFPL";
-    fullName = "Do What The F*ck You Want To Public License";
-  };
-
-  zlib = spdx {
-    spdxId = "Zlib";
-    fullName = "zlib License";
-  };
-
-  zpt20 = spdx { # FIXME: why zpt* instead of zpl*
-    spdxId = "ZPL-2.0";
+  zpt20 = {
+    shortName = "ZPT2.0";
     fullName = "Zope Public License 2.0";
+    url = "http://old.zope.org/Resources/License/ZPL-2.0";
   };
 
-  zpt21 = spdx {
-    spdxId = "ZPL-2.1";
+  zpt21 = {
+    shortName = "ZPT2.1";
     fullName = "Zope Public License 2.1";
+    url = "http://old.zope.org/Resources/License/ZPL-2.1";
   };
 
+  sleepycat = {
+    shortName = "Sleepycat";
+    fullName  = "Sleepycat Public License";
+    url       = "https://en.wikipedia.org/wiki/Sleepycat_License";
+  };
 }

lib/lists.nix

@@ -2,9 +2,15 @@
 
 with import ./trivial.nix;
 
-rec {
+let
 
-  inherit (builtins) head tail length isList elemAt concatLists filter elem genList;
+  inc = builtins.add 1;
+
+  dec = n: builtins.sub n 1;
+
+in rec {
+
+  inherit (builtins) head tail length isList elemAt concatLists filter elem;
 
 
   # Create a list consisting of a single element.  `singleton x' is
@@ -23,7 +29,7 @@ rec {
       fold' = n:
         if n == len
         then nul
-        else op (elemAt list n) (fold' (n + 1));
+        else op (elemAt list n) (fold' (inc n));
     in fold' 0;
 
   # Left fold: `fold op nul [x_1 x_2 ... x_n] == op (... (op (op nul
@@ -32,30 +38,24 @@ rec {
     let
       len = length list;
       foldl' = n:
-        if n == -1
+        if n == minus1
         then nul
-        else op (foldl' (n - 1)) (elemAt list n);
-    in foldl' (length list - 1);
+        else op (foldl' (dec n)) (elemAt list n);
+    in foldl' (dec (length list));
+
+  minus1 = dec 0;
 
 
-  # Strict version of foldl.
-  foldl' = builtins.foldl' or foldl;
-
-
-  # Map with index: `imap (i: v: "${v}-${toString i}") ["a" "b"] ==
-  # ["a-1" "b-2"]'. FIXME: why does this start to count at 1?
-  imap =
-    if builtins ? genList then
-      f: list: genList (n: f (n + 1) (elemAt list n)) (length list)
-    else
-      f: list:
-      let
-        len = length list;
-        imap' = n:
-          if n == len
-            then []
-            else [ (f (n + 1) (elemAt list n)) ] ++ imap' (n + 1);
-      in imap' 0;
+  # map with index: `imap (i: v: "${v}-${toString i}") ["a" "b"] ==
+  # ["a-1" "b-2"]'
+  imap = f: list:
+    let
+      len = length list;
+      imap' = n:
+        if n == len
+          then []
+          else [ (f (inc n) (elemAt list n)) ] ++ imap' (inc n);
+    in imap' 0;
 
 
   # Map and concatenate the result.
@@ -67,7 +67,7 @@ rec {
   # == [1 2 3 4 5]' and `flatten 1 == [1]'.
   flatten = x:
     if isList x
-    then foldl' (x: y: x ++ (flatten y)) [] x
+    then fold (x: y: (flatten x) ++ y) [] x
     else [x];
 
 
@@ -94,17 +94,17 @@ rec {
 
   # Return true iff function `pred' returns true for at least element
   # of `list'.
-  any = builtins.any or (pred: fold (x: y: if pred x then true else y) false);
+  any = pred: fold (x: y: if pred x then true else y) false;
 
 
   # Return true iff function `pred' returns true for all elements of
   # `list'.
-  all = builtins.all or (pred: fold (x: y: if pred x then y else false) true);
+  all = pred: fold (x: y: if pred x then y else false) true;
 
 
   # Count how many times function `pred' returns true for the elements
   # of `list'.
-  count = pred: foldl' (c: x: if pred x then c + 1 else c) 0;
+  count = pred: fold (x: c: if pred x then inc c else c) 0;
 
 
   # Return a singleton list or an empty list, depending on a boolean
@@ -124,17 +124,10 @@ rec {
 
 
   # Return a list of integers from `first' up to and including `last'.
-  range =
-    if builtins ? genList then
-      first: last:
-        if first > last
-        then []
-        else genList (n: first + n) (last - first + 1)
-    else
-      first: last:
-        if last < first
-        then []
-        else [first] ++ range (first + 1) last;
+  range = first: last:
+    if lessThan last first
+    then []
+    else [first] ++ range (add first 1) last;
 
 
   # Partition the elements of a list in two lists, `right' and
@@ -147,41 +140,34 @@ rec {
     ) { right = []; wrong = []; };
 
 
-  zipListsWith =
-    if builtins ? genList then
-      f: fst: snd: genList (n: f (elemAt fst n) (elemAt snd n)) (min (length fst) (length snd))
-    else
-      f: fst: snd:
-      let
-        len = min (length fst) (length snd);
-        zipListsWith' = n:
-          if n != len then
-            [ (f (elemAt fst n) (elemAt snd n)) ]
-            ++ zipListsWith' (n + 1)
-          else [];
-      in zipListsWith' 0;
+  zipListsWith = f: fst: snd:
+    let
+      len1 = length fst;
+      len2 = length snd;
+      len = if lessThan len1 len2 then len1 else len2;
+      zipListsWith' = n:
+        if n != len then
+          [ (f (elemAt fst n) (elemAt snd n)) ]
+          ++ zipListsWith' (inc n)
+        else [];
+    in zipListsWith' 0;
 
   zipLists = zipListsWith (fst: snd: { inherit fst snd; });
 
 
-  # Reverse the order of the elements of a list.
-  reverseList =
-    if builtins ? genList then
-      xs: let l = length xs; in genList (n: elemAt xs (l - n - 1)) l
-    else
-      fold (e: acc: acc ++ [ e ]) [];
+  # Reverse the order of the elements of a list.  FIXME: O(n^2)!
+  reverseList = fold (e: acc: acc ++ [ e ]) [];
 
 
   # Sort a list based on a comparator function which compares two
   # elements and returns true if the first argument is strictly below
   # the second argument.  The returned list is sorted in an increasing
   # order.  The implementation does a quick-sort.
-  sort = builtins.sort or (
-    strictLess: list:
+  sort = strictLess: list:
     let
       len = length list;
       first = head list;
-      pivot' = n: acc@{ left, right }: let el = elemAt list n; next = pivot' (n + 1); in
+      pivot' = n: acc@{ left, right }: let el = elemAt list n; next = pivot' (inc n); in
         if n == len
           then acc
         else if strictLess first el
@@ -190,84 +176,55 @@ rec {
           next { left = [ el ] ++ left; inherit right; };
       pivot = pivot' 1 { left = []; right = []; };
     in
-      if len < 2 then list
-      else (sort strictLess pivot.left) ++  [ first ] ++  (sort strictLess pivot.right));
+      if lessThan len 2 then list
+      else (sort strictLess pivot.left) ++  [ first ] ++  (sort strictLess pivot.right);
 
 
   # Return the first (at most) N elements of a list.
-  take =
-    if builtins ? genList then
-      count: sublist 0 count
-    else
-      count: list:
-        let
-          len = length list;
-          take' = n:
-            if n == len || n == count
-              then []
-            else
-              [ (elemAt list n) ] ++ take' (n + 1);
-        in take' 0;
+  take = count: list:
+    let
+      len = length list;
+      take' = n:
+        if n == len || n == count
+          then []
+        else
+          [ (elemAt list n) ] ++ take' (inc n);
+    in take' 0;
 
 
   # Remove the first (at most) N elements of a list.
-  drop =
-    if builtins ? genList then
-      count: list: sublist count (length list) list
-    else
-      count: list:
-        let
-          len = length list;
-          drop' = n:
-            if n == -1 || n < count
-              then []
-            else
-              drop' (n - 1) ++ [ (elemAt list n) ];
-        in drop' (len - 1);
-
-
-  # Return a list consisting of at most ‘count’ elements of ‘list’,
-  # starting at index ‘start’.
-  sublist = start: count: list:
-    let len = length list; in
-    genList
-      (n: elemAt list (n + start))
-      (if start >= len then 0
-       else if start + count > len then len - start
-       else count);
+  drop = count: list:
+    let
+      len = length list;
+      drop' = n:
+        if n == minus1 || lessThan n count
+          then []
+        else
+          drop' (dec n) ++ [ (elemAt list n) ];
+    in drop' (dec len);
 
 
   # Return the last element of a list.
   last = list:
-    assert list != []; elemAt list (length list - 1);
+    assert list != []; elemAt list (dec (length list));
 
 
-  # Return all elements but the last
-  init = list: assert list != []; take (length list - 1) list;
+  # Zip two lists together.
+  zipTwoLists = xs: ys:
+    let
+      len1 = length xs;
+      len2 = length ys;
+      len = if lessThan len1 len2 then len1 else len2;
+      zipTwoLists' = n:
+        if n != len then
+          [ { first = elemAt xs n; second = elemAt ys n; } ]
+          ++ zipTwoLists' (inc n)
+        else [];
+    in zipTwoLists' 0;
 
 
   deepSeqList = xs: y: if any (x: deepSeq x false) xs then y else y;
 
-
   crossLists = f: foldl (fs: args: concatMap (f: map f args) fs) [f];
 
-
-  # Remove duplicate elements from the list. O(n^2) complexity.
-  unique = list:
-    if list == [] then
-      []
-    else
-      let
-        x = head list;
-        xs = unique (drop 1 list);
-      in [x] ++ remove x xs;
-
-
-  # Intersects list 'e' and another list. O(nm) complexity.
-  intersectLists = e: filter (x: elem x e);
-
-
-  # Subtracts list 'e' from another list. O(nm) complexity.
-  subtractLists = e: filter (x: !(elem x e));
-
 }

lib/maintainers.nix

@@ -1,307 +1,101 @@
 /* -*- coding: utf-8; -*- */
 
 {
-  /* Add your name and email address here.
-     Keep the list alphabetically sorted.
-     Prefer the same attrname as your github username, please,
-     so it's easy to ping a package @maintainer.
-  */
+  /* Add your name and email address here.  Keep the list
+     alphabetically sorted.  */
 
-  a1russell = "Adam Russell <adamlr6+pub@gmail.com>";
-  abaldeau = "Andreas Baldeau <andreas@baldeau.net>";
-  abbradar = "Nikolay Amiantov <ab@fmap.me>";
-  adev	   = "Adrien Devresse <adev@adev.name>";
+  _1126 = "Christian Lask <mail@elfsechsundzwanzig.de>";
   aforemny = "Alexander Foremny <alexanderforemny@googlemail.com>";
-  aflatter = "Alexander Flatter <flatter@fastmail.fm>";
-  aherrmann = "Andreas Herrmann <andreash87@gmx.ch>";
-  ak = "Alexander Kjeldaas <ak@formalprivacy.com>";
-  akaWolf = "Artjom Vejsel <akawolf0@gmail.com>";
   akc = "Anders Claesson <akc@akc.is>";
   algorith = "Dries Van Daele <dries_van_daele@telenet.be>";
   all = "Nix Committers <nix-commits@lists.science.uu.nl>";
-  ambrop72 = "Ambroz Bizjak <ambrop7@gmail.com>";
   amiddelk = "Arie Middelkoop <amiddelk@gmail.com>";
   amorsillo = "Andrew Morsillo <andrew.morsillo@gmail.com>";
   AndersonTorres = "Anderson Torres <torres.anderson.85@gmail.com>";
-  anderspapitto = "Anders Papitto <anderspapitto@gmail.com>";
   andres = "Andres Loeh <ksnixos@andres-loeh.de>";
-  andrewrk = "Andrew Kelley <superjoe30@gmail.com>";
   antono = "Antono Vasiljev <self@antono.info>";
-  ardumont = "Antoine R. Dumont <eniotna.t@gmail.com>";
-  aristid = "Aristid Breitkreuz <aristidb@gmail.com>";
-  arobyn = "Alexei Robyn <shados@shados.net>";
-  asppsa = "Alastair Pharo <asppsa@gmail.com>";
   astsmtl = "Alexander Tsamutali <astsmtl@yandex.ru>";
   aszlig = "aszlig <aszlig@redmoonstudios.org>";
-  auntie = "Jonathan Glines <auntieNeo@gmail.com>";
-  avnik = "Alexander V. Nikolaev <avn@avnik.info>";
-  aycanirican = "Aycan iRiCAN <iricanaycan@gmail.com>";
-  badi = "Badi' Abdul-Wahid <abdulwahidc@gmail.com>";
-  balajisivaraman = "Balaji Sivaraman<sivaraman.balaji@gmail.com>";
   bbenoist = "Baptist BENOIST <return_0@live.com>";
-  bcarrell = "Brandon Carrell <brandoncarrell@gmail.com>";
-  bcdarwin = "Ben Darwin <bcdarwin@gmail.com>";
-  bdimcheff = "Brandon Dimcheff <brandon@dimcheff.com>";
   bennofs = "Benno Fünfstück <benno.fuenfstueck@gmail.com>";
-  benley = "Benjamin Staffin <benley@gmail.com>";
   berdario = "Dario Bertini <berdario@gmail.com>";
-  bergey = "Daniel Bergey <bergey@teallabs.org>";
   bjg = "Brian Gough <bjg@gnu.org>";
   bjornfor = "Bjørn Forsman <bjorn.forsman@gmail.com>";
   bluescreen303 = "Mathijs Kwik <mathijs@bluescreen303.nl>";
-  bobvanderlinden = "Bob van der Linden <bobvanderlinden@gmail.com>";
   bodil = "Bodil Stokke <nix@bodil.org>";
-  boothead = "Ben Ford <ben@perurbis.com>";
-  bosu = "Boris Sukholitko <boriss@gmail.com>";
-  bramd = "Bram Duvigneau <bram@bramd.nl>";
-  bstrik = "Berno Strik <dutchman55@gmx.com>";
-  c0dehero = "CodeHero <codehero@nerdpol.ch>";
   calrama = "Moritz Maxeiner <moritz@ucworks.org>";
-  campadrenalin = "Philip Horger <campadrenalin@gmail.com>";
-  cdepillabout = "Dennis Gosnell <cdep.illabout@gmail.com>";
   cfouche = "Chaddaï Fouché <chaddai.fouche@gmail.com>";
   chaoflow = "Florian Friesdorf <flo@chaoflow.net>";
-  chattered = "Phil Scott <me@philscotted.com>";
-  christopherpoole = "Christopher Mark Poole <mail@christopherpoole.net>";
   coconnor = "Corey O'Connor <coreyoconnor@gmail.com>";
-  codyopel = "Cody Opel <codyopel@gmail.com>";
-  copumpkin = "Dan Peebles <pumpkingod@gmail.com>";
   coroa = "Jonas Hörsch <jonas@chaoflow.net>";
-  couchemar = "Andrey Pavlov <couchemar@yandex.ru>";
   cstrahan = "Charles Strahan <charles.c.strahan@gmail.com>";
-  cwoac = "Oliver Matthews <oliver@codersoffortune.net>";
-  DamienCassou = "Damien Cassou <damien@cassou.me>";
-  davidak = "David Kleuker <post@davidak.de>";
-  davidrusu = "David Rusu <davidrusu.me@gmail.com>";
-  dbohdan = "Danyil Bohdan <danyil.bohdan@gmail.com>";
-  DerGuteMoritz = "Moritz Heidkamp <moritz@twoticketsplease.de>";
-  deepfire = "Kosyrev Serge <_deepfire@feelingofgreen.ru>";
-  desiderius = "Didier J. Devroye <didier@devroye.name>";
-  devhell = "devhell <\"^\"@regexmail.net>";
-  dezgeg = "Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>";
-  dfoxfranke = "Daniel Fox Franke <dfoxfranke@gmail.com>";
-  dmalikov = "Dmitry Malikov <malikov.d.y@gmail.com>";
-  dochang = "Desmond O. Chang <dochang@gmail.com>";
-  doublec = "Chris Double <chris.double@double.co.nz>";
-  ebzzry = "Rommel Martinez <ebzzry@gmail.com>";
-  ederoyd46 = "Matthew Brown <matt@ederoyd.co.uk>";
-  eduarrrd = "Eduard Bachmakov <e.bachmakov@gmail.com>";
   edwtjo = "Edward Tjörnhammar <ed@cflags.cc>";
   eelco = "Eelco Dolstra <eelco.dolstra@logicblox.com>";
-  eikek = "Eike Kettner <eike.kettner@posteo.de>";
-  ellis = "Ellis Whitehead <nixos@ellisw.net>";
-  emery = "Emery Hemingway <emery@vfemail.net>";
-  enolan = "Echo Nolan <echo@echonolan.net>";
-  epitrochoid = "Mabry Cervin <mpcervin@uncg.edu>";
-  ericbmerritt = "Eric Merritt <eric@afiniate.com>";
-  erikryb = "Erik Rybakken <erik.rybakken@math.ntnu.no>";
+  emery = "Emery Hemingawy <emery@vfemail.net>";
   ertes = "Ertugrul Söylemez <ertesx@gmx.de>";
-  exlevan = "Alexey Levan <exlevan@gmail.com>";
   falsifian = "James Cook <james.cook@utoronto.ca>";
-  flosse = "Markus Kohlhase <mail@markus-kohlhase.de>";
-  fluffynukeit = "Daniel Austin <dan@fluffynukeit.com>";
-  forkk = "Andrew Okin <forkk@forkk.net>";
-  fpletz = "Franz Pletz <fpletz@fnordicwalking.de>";
-  fps = "Florian Paul Schmidt <mista.tapas@gmx.net>";
-  fridh = "Frederik Rietdijk <fridh@fridh.nl>";
-  fro_ozen = "fro_ozen <fro_ozen@gmx.de>";
-  ftrvxmtrx = "Siarhei Zirukin <ftrvxmtrx@gmail.com>";
-  funfunctor = "Edward O'Callaghan <eocallaghan@alterapraxis.com>";
   fuuzetsu = "Mateusz Kowalczyk <fuuzetsu@fuuzetsu.co.uk>";
-  gal_bolle = "Florent Becker <florent.becker@ens-lyon.org>";
   garbas = "Rok Garbas <rok@garbas.si>";
-  garrison = "Jim Garrison <jim@garrison.cc>";
-  gavin = "Gavin Rogers <gavin@praxeology.co.uk>";
-  gebner = "Gabriel Ebner <gebner@gebner.org>";
-  gfxmonk = "Tim Cuthbertson <tim@gfxmonk.net>";
-  giogadi = "Luis G. Torres <lgtorres42@gmail.com>";
-  globin = "Robin Gloster <robin@glob.in>";
   goibhniu = "Cillian de Róiste <cillian.deroiste@gmail.com>";
-  gridaphobe = "Eric Seidel <eric@seidel.io>";
   guibert = "David Guibert <david.guibert@gmail.com>";
-  havvy = "Ryan Scheel <ryan.havvy@gmail.com>";
-  hbunke = "Hendrik Bunke <bunke.hendrik@gmail.com>";
-  henrytill = "Henry Till <henrytill@gmail.com>";
-  hiberno = "Christian Lask <mail@elfsechsundzwanzig.de>";
   hinton = "Tom Hinton <t@larkery.com>";
-  hrdinka = "Christoph Hrdinka <c.nix@hrdinka.at>";
-  iand675 = "Ian Duncan <ian@iankduncan.com>";
   ianwookim = "Ian-Woo Kim <ianwookim@gmail.com>";
   iElectric = "Domen Kozar <domen@dev.si>";
-  ikervagyok = "Balázs Lengyel <ikervagyok@gmail.com>";
   iyzsong = "Song Wenwu <iyzsong@gmail.com>";
-  j-keck = "Jürgen Keck <jhyphenkeck@gmail.com>";
-  jagajaga = "Arseniy Seroka <ars.seroka@gmail.com>";
-  javaguirre = "Javier Aguirre <contacto@javaguirre.net>";
-  jb55 = "William Casarin <bill@casarin.me>";
   jcumming = "Jack Cummings <jack@mudshark.org>";
-  jefdaj = "Jeffrey David Johnson <jefdaj@gmail.com>";
-  jfb = "James Felix Black <james@yamtime.com>";
-  jgeerds = "Jascha Geerds <jg@ekby.de>";
-  jirkamarsik = "Jirka Marsik <jiri.marsik89@gmail.com>";
-  joachifm = "Joachim Fasting <joachifm@fastmail.fm>";
-  joamaki = "Jussi Maki <joamaki@gmail.com>";
-  joelmo = "Joel Moberg <joel.moberg@gmail.com>";
-  joelteon = "Joel Taylor <me@joelt.io>";
-  jpbernardy = "Jean-Philippe Bernardy <jeanphilippe.bernardy@gmail.com>";
   jwiegley = "John Wiegley <johnw@newartisans.com>";
-  jwilberding = "Jordan Wilberding <jwilberding@afiniate.com>";
-  jzellner = "Jeff Zellner <jeffz@eml.cc>";
-  kamilchm = "Kamil Chmielewski <kamil.chm@gmail.com>";
-  kampfschlaefer = "Arnold Krille <arnold@arnoldarts.de>";
-  khumba = "Bryan Gardiner <bog@khumba.net>";
   kkallio = "Karn Kallio <tierpluspluslists@gmail.com>";
-  koral = "Koral <koral@mailoo.org>";
-  kovirobi = "Kovacsics Robert <kovirobi@gmail.com>";
-  kragniz = "Louis Taylor <louis@kragniz.eu>";
   ktosiek = "Tomasz Kontusz <tomasz.kontusz@gmail.com>";
-  lassulus = "Lassulus <lassulus@gmail.com>";
-  layus = "Guillaume Maudoux <layus.on@gmail.com>";
-  lebastr = "Alexander Lebedev <lebastr@gmail.com>";
-  leonardoce = "Leonardo Cecchi <leonardo.cecchi@gmail.com>";
   lethalman = "Luca Bruno <lucabru@src.gnome.org>";
-  lhvwb = "Nathaniel Baxter <nathaniel.baxter@gmail.com>";
-  lihop = "Leroy Hopson <nixos@leroy.geek.nz>";
   linquize = "Linquize <linquize@yahoo.com.hk>";
-  linus = "Linus Arver <linusarver@gmail.com>";
-  lnl7 = "Daiderd Jordan <daiderd@gmail.com>";
   lovek323 = "Jason O'Conal <jason@oconal.id.au>";
-  lowfatcomputing = "Andreas Wagner <andreas.wagner@lowfatcomputing.org>";
-  lsix = "Lancelot SIX <lsix@lancelotsix.com>";
   ludo = "Ludovic Courtès <ludo@gnu.org>";
-  lukego = "Luke Gorrie <luke@snabb.co>";
   madjar = "Georges Dubus <georges.dubus@compiletoi.net>";
-  magnetophon = "Bart Brouns <bart@magnetophon.nl>";
-  mahe = "Matthias Herrmann <matthias.mh.herrmann@gmail.com>";
-  makefu = "Felix Richter <makefu@syntax-fehler.de>";
-  malyn = "Michael Alyn Miller <malyn@strangeGizmo.com>";
-  manveru = "Michael Fellinger <m.fellinger@gmail.com>";
   marcweber = "Marc Weber <marco-oweber@gmx.de>";
-  maurer = "Matthew Maurer <matthew.r.maurer+nix@gmail.com>";
   matejc = "Matej Cotman <cotman.matej@gmail.com>";
-  mathnerd314 = "Mathnerd314 <mathnerd314.gph+hs@gmail.com>";
-  matthiasbeyer = "Matthias Beyer <mail@beyermatthias.de>";
-  mbakke = "Marius Bakke <ymse@tuta.io>";
-  meditans = "Carlo Nucera <meditans@gmail.com>";
-  meisternu = "Matt Miemiec <meister@krutt.org>";
-  michelk = "Michel Kuhlmann <michel@kuhlmanns.info>";
-  michaelpj = "Michael Peyton Jones <michaelpj@gmail.com>";
-  mirdhyn = "Merlin Gaillard <mirdhyn@gmail.com>";
-  mschristiansen = "Mikkel Christiansen <mikkel@rheosystems.com>";
   modulistic = "Pablo Costa <modulistic@gmail.com>";
   mornfall = "Petr Ročkai <me@mornfall.net>";
-  MP2E = "Cray Elliott <MP2E@archlinux.us>";
   msackman = "Matthew Sackman <matthew@wellquite.org>";
-  mtreskin = "Max Treskin <zerthurd@gmail.com>";
-  mudri = "James Wood <lamudri@gmail.com>";
-  muflax = "Stefan Dorn <mail@muflax.com>";
-  nathan-gs = "Nathan Bijnens <nathan@nathan.gs>";
-  nckx = "Tobias Geerinckx-Rice <tobias.geerinckx.rice@gmail.com>";
-  nico202 = "Nicolò Balzarotti <anothersms@gmail.com>";
-  notthemessiah = "Brian Cohen <brian.cohen.88@gmail.com>";
-  np = "Nicolas Pouillard <np.nix@nicolaspouillard.fr>";
-  nslqqq = "Nikita Mikhailov <nslqqq@gmail.com>";
-  obadz = "obadz <dav-nixos@odav.org>";
   ocharles = "Oliver Charles <ollie@ocharles.org.uk>";
-  odi = "Oliver Dunkl <oliver.dunkl@gmail.com>";
   offline = "Jaka Hudoklin <jakahudoklin@gmail.com>";
-  olcai = "Erik Timan <dev@timan.info>";
   orbitz = "Malcolm Matalka <mmatalka@gmail.com>";
-  osener = "Ozan Sener <ozan@ozansener.com>";
   page = "Carles Pagès <page@cubata.homelinux.net>";
-  paholg = "Paho Lurie-Gregg <paho@paholg.com>";
-  pakhfn = "Fedor Pakhomov <pakhfn@gmail.com>";
-  pashev = "Igor Pashev <pashev.igor@gmail.com>";
-  pesterhazy = "Paulus Esterhazy <pesterhazy@gmail.com>";
-  phausmann = "Philipp Hausmann <nix@314.ch>";
-  philandstuff = "Philip Potter <philip.g.potter@gmail.com>";
   phreedom = "Evgeny Egorochkin <phreedom@yandex.ru>";
   pierron = "Nicolas B. Pierron <nixos@nbp.name>";
   piotr = "Piotr Pietraszkiewicz <ppietrasa@gmail.com>";
-  pjones = "Peter Jones <pjones@devalot.com>";
   pkmx = "Chih-Mao Chen <pkmx.tw@gmail.com>";
-  plcplc = "Philip Lykke Carlsen <plcplc@gmail.com>";
-  pmahoney = "Patrick Mahoney <pat@polycrystal.org>";
-  pmiddend = "Philipp Middendorf <pmidden@secure.mailbox.org>";
-  prikhi = "Pavan Rikhi <pavan.rikhi@gmail.com>";
-  psibi = "Sibi <sibi@psibi.in>";
   pSub = "Pascal Wittmann <mail@pascal-wittmann.de>";
-  puffnfresh = "Brian McKenna <brian@brianmckenna.org>";
   qknight = "Joachim Schiele <js@lastlog.de>";
-  ragge = "Ragnar Dahlen <r.dahlen@gmail.com>";
   raskin = "Michael Raskin <7c6f434c@mail.ru>";
   redbaron = "Maxim Ivanov <ivanov.maxim@gmail.com>";
-  refnil = "Martin Lavoie <broemartino@gmail.com>";
   relrod = "Ricky Elrod <ricky@elrod.me>";
-  renzo = "Renzo Carbonara <renzocarbonara@gmail.com>";
-  rick68 = "Wei-Ming Yang <rick68@gmail.com>";
   rickynils = "Rickard Nilsson <rickynils@gmail.com>";
   rob = "Rob Vermaas <rob.vermaas@gmail.com>";
-  robberer = "Longrin Wischnewski <robberer@freakmail.de>";
-  robbinch = "Robbin C. <robbinch33@gmail.com>";
   roconnor = "Russell O'Connor <roconnor@theorem.ca>";
   roelof = "Roelof Wobben <rwobben@hotmail.com>";
   romildo = "José Romildo Malaquias <malaquias@gmail.com>";
   rszibele = "Richard Szibele <richard_szibele@hotmail.com>";
-  rushmorem = "Rushmore Mushambi <rushmore@webenchanter.com>";
-  rycee = "Robert Helgesson <robert@rycee.net>";
-  samuelrivas = "Samuel Rivas <samuelrivas@gmail.com>";
   sander = "Sander van der Burg <s.vanderburg@tudelft.nl>";
-  schmitthenner = "Fabian Schmitthenner <development@schmitthenner.eu>";
-  schristo = "Scott Christopher <schristopher@konputa.com>";
-  sepi = "Raffael Mancini <raffael@mancini.lu>";
-  sheganinans = "Aistis Raulinaitis <sheganinans@gmail.com>";
-  shell = "Shell Turner <cam.turn@gmail.com>";
   shlevy = "Shea Levy <shea@shealevy.com>";
   simons = "Peter Simons <simons@cryp.to>";
-  simonvandel = "Simon Vandel Sillesen <simon.vandel@gmail.com>";
-  sjagoe = "Simon Jagoe <simon@simonjagoe.com>";
-  sjmackenzie = "Stewart Mackenzie <setori88@gmail.com>";
-  skeidel = "Sven Keidel <svenkeidel@gmail.com>";
   smironov = "Sergey Mironov <ierton@gmail.com>";
-  spacefrogg = "Michael Raitza <spacefrogg-nixos@meterriblecrew.net>";
   sprock = "Roger Mason <rmason@mun.ca>";
-  spwhitt = "Spencer Whitt <sw@swhitt.me>";
-  stephenmw = "Stephen Weinberg <stephen@q5comm.com>";
-  szczyp = "Szczyp <qb@szczyp.com>";
-  sztupi = "Attila Sztupak <attila.sztupak@gmail.com>";
-  tailhook = "Paul Colomiets <paul@colomiets.name>";
-  taktoa = "Remy Goldschmidt <taktoa@gmail.com>";
-  telotortium = "Robert Irelan <rirelan@gmail.com>";
   thammers = "Tobias Hammerschmidt <jawr@gmx.de>";
   the-kenny = "Moritz Ulrich <moritz@tarn-vedra.de>";
-  theuni = "Christian Theune <ct@flyingcircus.io>";
   thoughtpolice = "Austin Seipp <aseipp@pobox.com>";
-  titanous = "Jonathan Rudenberg <jonathan@titanous.com>";
   tomberek = "Thomas Bereknyei <tomberek@gmail.com>";
-  travisbhartwell = "Travis B. Hartwell <nafai@travishartwell.net>";
-  trino = "Hubert Mühlhans <muehlhans.hubert@ekodia.de>";
-  tstrobel = "Thomas Strobel <ts468@cam.ac.uk>";
   ttuegel = "Thomas Tuegel <ttuegel@gmail.com>";
-  tv = "Tomislav Viljetić <tv@shackspace.de>";
-  twey = "James ‘Twey’ Kay <twey@twey.co.uk>";
   urkud = "Yury G. Kudryashov <urkud+nix@ya.ru>";
-  vandenoever = "Jos van den Oever <jos@vandenoever.info>";
-  vbgl = "Vincent Laporte <Vincent.Laporte@gmail.com>";
   vbmithr = "Vincent Bernardoff <vb@luminar.eu.org>";
   vcunat = "Vladimír Čunát <vcunat@gmail.com>";
   viric = "Lluís Batlle i Rossell <viric@viric.name>";
   vizanto = "Danny Wilson <danny@prime.vc>";
   vlstill = "Vladimír Štill <xstill@fi.muni.cz>";
-  vmandela = "Venkateswara Rao Mandela <venkat.mandela@gmail.com>";
-  vozz = "Oliver Hunt <oliver.huntuk@gmail.com>";
   winden = "Antonio Vargas Gonzalez <windenntw@gmail.com>";
   wizeman = "Ricardo M. Correia <rcorreia@wizy.org>";
-  wjlroe = "William Roe <willroe@gmail.com>";
-  womfoo = "Kranium Gikos Mendoza <kranium@gikos.net>";
-  wkennington = "William A. Kennington III <william@wkennington.com>";
   wmertens = "Wout Mertens <Wout.Mertens@gmail.com>";
-  wscott = "Wayne Scott <wsc9tt@gmail.com>";
-  wyvie = "Elijah Rum <elijahrum@gmail.com>";
-  yarr = "Dmitry V. <savraz@gmail.com>";
   z77z = "Marco Maggesi <maggesi@math.unifi.it>";
   zef = "Zef Hemel <zef@zef.me>";
   zimbatm = "zimbatm <zimbatm@zimbatm.com>";
   zoomulator = "Kim Simmons <zoomulator@gmail.com>";
-  Gonzih = "Max Gonzih <gonzih@gmail.com>";
 }

lib/misc.nix

@@ -0,0 +1,429 @@
+let lib = import ./default.nix;
+    inherit (builtins) isFunction hasAttr getAttr head tail isList isAttrs isInt attrNames;
+
+in
+
+with import ./lists.nix;
+with import ./attrsets.nix;
+with import ./strings.nix;
+
+rec {
+
+  # returns default if env var is not set
+  maybeEnv = name: default:
+    let value = builtins.getEnv name; in
+    if value == "" then default else value;
+
+  defaultMergeArg = x : y: if builtins.isAttrs y then
+    y
+  else 
+    (y x);
+  defaultMerge = x: y: x // (defaultMergeArg x y);
+  foldArgs = merger: f: init: x: 
+    let arg=(merger init (defaultMergeArg init x));
+      # now add the function with composed args already applied to the final attrs
+        base = (setAttrMerge "passthru" {} (f arg) 
+                        ( z : z // rec { 
+                          function = foldArgs merger f arg; 
+			  args = (lib.attrByPath ["passthru" "args"] {} z) // x;
+                          } ));
+	withStdOverrides = base // {
+	   override = base.passthru.function;
+	   deepOverride = a : (base.passthru.function ((lib.mapAttrs (lib.deepOverrider a) base.passthru.args) // a));
+	   } ;
+        in
+	withStdOverrides;
+    
+
+  # predecessors: proposed replacement for applyAndFun (which has a bug cause it merges twice)
+  # the naming "overridableDelayableArgs" tries to express that you can
+  # - override attr values which have been supplied earlier
+  # - use attr values before they have been supplied by accessing the fix point
+  #   name "fixed"
+  # f: the (delayed overridden) arguments are applied to this
+  #
+  # initial: initial attrs arguments and settings. see defaultOverridableDelayableArgs
+  #
+  # returns: f applied to the arguments // special attributes attrs
+  #     a) merge: merge applied args with new args. Wether an argument is overridden depends on the merge settings
+  #     b) replace: this let's you replace and remove names no matter which merge function has been set
+  #
+  # examples: see test cases "res" below;
+  overridableDelayableArgs =
+          f :        # the function applied to the arguments
+          initial :  # you pass attrs, the functions below are passing a function taking the fix argument
+    let
+        takeFixed = if isFunction initial then initial else (fixed : initial); # transform initial to an expression always taking the fixed argument
+        tidy = args : 
+            let # apply all functions given in "applyPreTidy" in sequence
+                applyPreTidyFun = fold ( n : a : x : n ( a x ) ) lib.id (maybeAttr "applyPreTidy" [] args);
+            in removeAttrs (applyPreTidyFun args) ( ["applyPreTidy"] ++ (maybeAttr  "removeAttrs" [] args) ); # tidy up args before applying them
+        fun = n : x :
+             let newArgs = fixed :
+                     let args = takeFixed fixed; 
+                         mergeFun = getAttr n args;
+                     in if isAttrs x then (mergeFun args x)
+                        else assert isFunction x;
+                             mergeFun args (x ( args // { inherit fixed; }));
+             in overridableDelayableArgs f newArgs;
+    in
+    (f (tidy (lib.fix takeFixed))) // {
+      merge   = fun "mergeFun";
+      replace = fun "keepFun";
+    };
+  defaultOverridableDelayableArgs = f : 
+      let defaults = {
+            mergeFun = mergeAttrByFunc; # default merge function. merge strategie (concatenate lists, strings) is given by mergeAttrBy
+            keepFun = a : b : { inherit (a) removeAttrs mergeFun keepFun mergeAttrBy; } // b; # even when using replace preserve these values
+            applyPreTidy = []; # list of functions applied to args before args are tidied up (usage case : prepareDerivationArgs)
+            mergeAttrBy = mergeAttrBy // {
+              applyPreTidy = a : b : a ++ b;
+              removeAttrs = a : b: a ++ b;
+            };
+            removeAttrs = ["mergeFun" "keepFun" "mergeAttrBy" "removeAttrs" "fixed" ]; # before applying the arguments to the function make sure these names are gone
+          };
+      in (overridableDelayableArgs f defaults).merge;
+
+
+
+  # rec { # an example of how composedArgsAndFun can be used
+  #  a  = composedArgsAndFun (x : x) { a = ["2"]; meta = { d = "bar";}; };
+  #  # meta.d will be lost ! It's your task to preserve it (eg using a merge function)
+  #  b  = a.passthru.function { a = [ "3" ]; meta = { d2 = "bar2";}; };
+  #  # instead of passing/ overriding values you can use a merge function:
+  #  c  = b.passthru.function ( x: { a = x.a  ++ ["4"]; }); # consider using (maybeAttr "a" [] x)
+  # }
+  # result:
+  # {
+  #   a = { a = ["2"];     meta = { d = "bar"; }; passthru = { function = .. }; };
+  #   b = { a = ["3"];     meta = { d2 = "bar2"; }; passthru = { function = .. }; };
+  #   c = { a = ["3" "4"]; meta = { d2 = "bar2"; }; passthru = { function = .. }; };
+  #   # c2 is equal to c
+  # }
+  composedArgsAndFun = f: foldArgs defaultMerge f {};
+
+  
+  # shortcut for attrByPath ["name"] default attrs
+  maybeAttrNullable = name: default: attrs:
+    if attrs == null then default else 
+    if __hasAttr name attrs then (__getAttr name attrs) else default;
+
+  # shortcut for attrByPath ["name"] default attrs
+  maybeAttr = name: default: attrs:
+    if __hasAttr name attrs then (__getAttr name attrs) else default;
+
+
+  # Return the second argument if the first one is true or the empty version
+  # of the second argument.
+  ifEnable = cond: val:
+    if cond then val
+    else if builtins.isList val then []
+    else if builtins.isAttrs val then {}
+    # else if builtins.isString val then ""
+    else if val == true || val == false then false
+    else null;
+
+    
+  # Return true only if there is an attribute and it is true.
+  checkFlag = attrSet: name:
+        if name == "true" then true else
+        if name == "false" then false else
+        if (elem name (attrByPath ["flags"] [] attrSet)) then true else
+        attrByPath [name] false attrSet ;
+
+
+  # Input : attrSet, [ [name default] ... ], name
+  # Output : its value or default.
+  getValue = attrSet: argList: name:
+  ( attrByPath [name] (if checkFlag attrSet name then true else
+        if argList == [] then null else
+        let x = builtins.head argList; in
+                if (head x) == name then 
+                        (head (tail x))
+                else (getValue attrSet 
+                        (tail argList) name)) attrSet );
+
+                        
+  # Input : attrSet, [[name default] ...], [ [flagname reqs..] ... ]
+  # Output : are reqs satisfied? It's asserted.
+  checkReqs = attrSet : argList : condList :
+  (
+    fold lib.and true 
+      (map (x: let name = (head x) ; in
+        
+        ((checkFlag attrSet name) -> 
+        (fold lib.and true
+        (map (y: let val=(getValue attrSet argList y); in
+                (val!=null) && (val!=false)) 
+        (tail x))))) condList)) ;
+        
+
+  # This function has O(n^2) performance.
+  uniqList = {inputList, acc ? []} :
+    let go = xs : acc :
+             if xs == []
+             then []
+             else let x = head xs;
+                      y = if elem x acc then [] else [x];
+                  in y ++ go (tail xs) (y ++ acc);
+    in go inputList acc;
+
+  uniqListExt = {inputList, outputList ? [],
+    getter ? (x : x), compare ? (x: y: x==y)}:
+        if inputList == [] then outputList else
+        let x=head inputList; 
+        isX = y: (compare (getter y) (getter x));
+        newOutputList = outputList ++
+         (if any isX outputList then [] else [x]);
+        in uniqListExt {outputList=newOutputList; 
+                inputList = (tail inputList);
+                inherit getter compare;
+                };
+
+
+                
+  condConcat = name: list: checker:
+        if list == [] then name else
+        if checker (head list) then 
+                condConcat 
+                        (name + (head (tail list))) 
+                        (tail (tail list)) 
+                        checker
+        else condConcat
+                name (tail (tail list)) checker;
+
+  lazyGenericClosure = {startSet, operator}:
+    let
+      work = list: doneKeys: result:
+        if list == [] then
+          result
+        else
+          let x = head list; key = x.key; in
+          if elem key doneKeys then
+            work (tail list) doneKeys result
+          else
+            work (tail list ++ operator x) ([key] ++ doneKeys) ([x] ++ result);
+    in
+      work startSet [] [];
+
+  genericClosure = builtins.genericClosure or lazyGenericClosure;
+
+  innerModifySumArgs = f: x: a: b: if b == null then (f a b) // x else 
+        innerModifySumArgs f x (a // b);
+  modifySumArgs = f: x: innerModifySumArgs f x {};
+
+
+  innerClosePropagation = acc : xs :
+    if xs == []
+    then acc
+    else let y  = head xs;
+             ys = tail xs;
+         in if ! isAttrs y
+            then innerClosePropagation acc ys
+            else let acc' = [y] ++ acc;
+                 in innerClosePropagation
+                      acc'
+                      (uniqList { inputList = (maybeAttrNullable "propagatedBuildInputs" [] y)
+                                           ++ (maybeAttrNullable "propagatedNativeBuildInputs" [] y)
+                                           ++ ys;
+                                  acc = acc';
+                                }
+                      );
+
+  closePropagation = list: (uniqList {inputList = (innerClosePropagation [] list);});
+
+  # calls a function (f attr value ) for each record item. returns a list
+  mapAttrsFlatten = f : r : map (attr: f attr (builtins.getAttr attr r) ) (attrNames r);
+
+  # attribute set containing one attribute
+  nvs = name : value : listToAttrs [ (nameValuePair name value) ];
+  # adds / replaces an attribute of an attribute set
+  setAttr = set : name : v : set // (nvs name v);
+
+  # setAttrMerge (similar to mergeAttrsWithFunc but only merges the values of a particular name)
+  # setAttrMerge "a" [] { a = [2];} (x : x ++ [3]) -> { a = [2 3]; } 
+  # setAttrMerge "a" [] {         } (x : x ++ [3]) -> { a = [  3]; }
+  setAttrMerge = name : default : attrs : f :
+    setAttr attrs name (f (maybeAttr name default attrs));
+
+  # Using f = a : b = b the result is similar to //
+  # merge attributes with custom function handling the case that the attribute
+  # exists in both sets
+  mergeAttrsWithFunc = f : set1 : set2 :
+    fold (n: set : if (__hasAttr n set) 
+                        then setAttr set n (f (__getAttr n set) (__getAttr n set2))
+                        else set )
+           (set2 // set1) (__attrNames set2);
+
+  # merging two attribute set concatenating the values of same attribute names
+  # eg { a = 7; } {  a = [ 2 3 ]; } becomes { a = [ 7 2 3 ]; }
+  mergeAttrsConcatenateValues = mergeAttrsWithFunc ( a : b : (toList a) ++ (toList b) );
+
+  # merges attributes using //, if a name exisits in both attributes
+  # an error will be triggered unless its listed in mergeLists
+  # so you can mergeAttrsNoOverride { buildInputs = [a]; } { buildInputs = [a]; } {} to get
+  # { buildInputs = [a b]; }
+  # merging buildPhase does'nt really make sense. The cases will be rare where appending /prefixing will fit your needs?
+  # in these cases the first buildPhase will override the second one
+  # ! deprecated, use mergeAttrByFunc instead
+  mergeAttrsNoOverride = { mergeLists ? ["buildInputs" "propagatedBuildInputs"],
+                           overrideSnd ? [ "buildPhase" ]
+                         } : attrs1 : attrs2 :
+    fold (n: set : 
+        setAttr set n ( if (__hasAttr n set) 
+            then # merge 
+              if elem n mergeLists # attribute contains list, merge them by concatenating
+                then (__getAttr n attrs2) ++ (__getAttr n attrs1)
+              else if elem n overrideSnd
+                then __getAttr n attrs1
+              else throw "error mergeAttrsNoOverride, attribute ${n} given in both attributes - no merge func defined"
+            else __getAttr n attrs2 # add attribute not existing in attr1
+           )) attrs1 (__attrNames attrs2);
+
+
+  # example usage:
+  # mergeAttrByFunc  {
+  #   inherit mergeAttrBy; # defined below
+  #   buildInputs = [ a b ];
+  # } {
+  #  buildInputs = [ c d ];
+  # };
+  # will result in
+  # { mergeAttrsBy = [...]; buildInputs = [ a b c d ]; }
+  # is used by prepareDerivationArgs, defaultOverridableDelayableArgs and can be used when composing using
+  # foldArgs, composedArgsAndFun or applyAndFun. Example: composableDerivation in all-packages.nix
+  mergeAttrByFunc = x : y :
+    let
+          mergeAttrBy2 = { mergeAttrBy=lib.mergeAttrs; }
+                      // (maybeAttr "mergeAttrBy" {} x)
+                      // (maybeAttr "mergeAttrBy" {} y); in
+    fold lib.mergeAttrs {} [
+      x y
+      (mapAttrs ( a : v : # merge special names using given functions
+          if (hasAttr a x)
+             then if (hasAttr a y)
+               then v (getAttr a x) (getAttr a y) # both have attr, use merge func
+               else (getAttr a x) # only x has attr
+             else (getAttr a y) # only y has attr)
+          ) (removeAttrs mergeAttrBy2
+                         # don't merge attrs which are neither in x nor y
+                         (filter (a : (! hasAttr a x) && (! hasAttr a y) )
+                                 (attrNames mergeAttrBy2))
+            )
+      )
+    ];
+  mergeAttrsByFuncDefaults = foldl mergeAttrByFunc { inherit mergeAttrBy; };
+  mergeAttrsByFuncDefaultsClean = list: removeAttrs (mergeAttrsByFuncDefaults list) ["mergeAttrBy"];
+
+  # merge attrs based on version key into mkDerivation args, see mergeAttrBy to learn about smart merge defaults
+  #
+  # This function is best explained by an example:
+  #
+  #     {version ? "2.x"} :
+  #
+  #     mkDerivation (mergeAttrsByVersion "package-name" version 
+  #       { # version specific settings
+  #         "git" = { src = ..; preConfigre = "autogen.sh"; buildInputs = [automake autoconf libtool];  };
+  #         "2.x" = { src = ..; };
+  #       }
+  #       {  // shared settings
+  #          buildInputs = [ common build inputs ];
+  #          meta = { .. }
+  #       }
+  #     )
+  #
+  # Please note that e.g. Eelco Dolstra usually prefers having one file for
+  # each version. On the other hand there are valuable additional design goals
+  #  - readability
+  #  - do it once only
+  #  - try to avoid duplication
+  #
+  # Marc Weber and Michael Raskin sometimes prefer keeping older
+  # versions around for testing and regression tests - as long as its cheap to
+  # do so.
+  #
+  # Very often it just happens that the "shared" code is the bigger part.
+  # Then using this function might be appropriate.
+  #
+  # Be aware that its easy to cause recompilations in all versions when using
+  # this function - also if derivations get too complex splitting into multiple
+  # files is the way to go.
+  #
+  # See misc.nix -> versionedDerivation
+  # discussion: nixpkgs: pull/310
+  mergeAttrsByVersion = name: version: attrsByVersion: base:
+    mergeAttrsByFuncDefaultsClean [ { name = "${name}-${version}"; } base (maybeAttr version (throw "bad version ${version} for ${name}") attrsByVersion)];
+
+  # sane defaults (same name as attr name so that inherit can be used)
+  mergeAttrBy = # { buildInputs = concatList; [...]; passthru = mergeAttr; [..]; }
+    listToAttrs (map (n : nameValuePair n lib.concat)
+      [ "nativeBuildInputs" "buildInputs" "propagatedBuildInputs" "configureFlags" "prePhases" "postAll" "patches" ])
+    // listToAttrs (map (n : nameValuePair n lib.mergeAttrs) [ "passthru" "meta" "cfg" "flags" ])
+    // listToAttrs (map (n : nameValuePair n (a: b: "${a}\n${b}") ) [ "preConfigure" "postInstall" ])
+  ;
+
+  # prepareDerivationArgs tries to make writing configurable derivations easier
+  # example:
+  #  prepareDerivationArgs {
+  #    mergeAttrBy = {
+  #       myScript = x : y : x ++ "\n" ++ y;
+  #    };
+  #    cfg = {
+  #      readlineSupport = true;
+  #    };
+  #    flags = {
+  #      readline = {
+  #        set = {
+  #           configureFlags = [ "--with-compiler=${compiler}" ];
+  #           buildInputs = [ compiler ];
+  #           pass = { inherit compiler; READLINE=1; };
+  #           assertion = compiler.dllSupport;
+  #           myScript = "foo";
+  #        };
+  #        unset = { configureFlags = ["--without-compiler"]; };
+  #      };
+  #    };
+  #    src = ...
+  #    buildPhase = '' ... '';
+  #    name = ...
+  #    myScript = "bar";
+  #  };
+  # if you don't have need for unset you can omit the surrounding set = { .. } attr
+  # all attrs except flags cfg and mergeAttrBy will be merged with the
+  # additional data from flags depending on config settings
+  # It's used in composableDerivation in all-packages.nix. It's also used
+  # heavily in the new python and libs implementation
+  #
+  # should we check for misspelled cfg options?
+  # TODO use args.mergeFun here as well?
+  prepareDerivationArgs = args:
+    let args2 = { cfg = {}; flags = {}; } // args;
+        flagName = name : "${name}Support";
+        cfgWithDefaults = (listToAttrs (map (n : nameValuePair (flagName n) false) (attrNames args2.flags)))
+                          // args2.cfg;
+        opts = attrValues (mapAttrs (a : v :
+                let v2 = if v ? set || v ? unset then v else { set = v; };
+                    n = if (getAttr (flagName a) cfgWithDefaults) then "set" else "unset";
+                    attr = maybeAttr n {} v2; in
+                if (maybeAttr "assertion" true attr)
+                  then attr
+                  else throw "assertion of flag ${a} of derivation ${args.name} failed"
+               ) args2.flags );
+    in removeAttrs
+      (mergeAttrsByFuncDefaults ([args] ++ opts ++ [{ passthru = cfgWithDefaults; }]))
+      ["flags" "cfg" "mergeAttrBy" ];
+
+
+  nixType = x:
+      if isAttrs x then
+          if x ? outPath then "derivation"
+          else "aattrs"
+      else if isFunction x then "function"
+      else if isList x then "list"
+      else if x == true then "bool"
+      else if x == false then "bool"
+      else if x == null then "null"
+      else if isInt x then "int"
+      else "string";
+
+}

lib/modules.nix

@@ -9,76 +9,28 @@ rec {
 
   /* Evaluate a set of modules.  The result is a set of two
      attributes: ‘options’: the nested set of all option declarations,
-     and ‘config’: the nested set of all option values.
-     !!! Please think twice before adding to this argument list! The more
-     that is specified here instead of in the modules themselves the harder
-     it is to transparently move a set of modules to be a submodule of another
-     config (as the proper arguments need to be replicated at each call to
-     evalModules) and the less declarative the module set is. */
-  evalModules = { modules
-                , prefix ? []
-                , # This should only be used for special arguments that need to be evaluated
-                  # when resolving module structure (like in imports). For everything else,
-                  # there's _module.args.
-                  specialArgs ? {}
-                , # This would be remove in the future, Prefer _module.args option instead.
-                  args ? {}
-                , # This would be remove in the future, Prefer _module.check option instead.
-                  check ? true
-                }:
+     and ‘config’: the nested set of all option values. */
+  evalModules = { modules, prefix ? [], args ? {}, check ? true }:
     let
-      # This internal module declare internal options under the `_module'
-      # attribute.  These options are fragile, as they are used by the
-      # module system to change the interpretation of modules.
-      internalModule = rec {
-        _file = ./modules.nix;
-
-        key = _file;
-
-        options = {
-          _module.args = mkOption {
-            type = types.attrsOf types.unspecified;
-            internal = true;
-            description = "Arguments passed to each module.";
-          };
-
-          _module.check = mkOption {
-            type = types.bool;
-            internal = true;
-            default = check;
-            description = "Whether to check whether all option definitions have matching declarations.";
-          };
-        };
-
-        config = {
-          _module.args = args;
-        };
-      };
-
-      closed = closeModules (modules ++ [ internalModule ]) ({ inherit config options; lib = import ./.; } // specialArgs);
-
+      args' = args // { lib = import ./.; } // result;
+      closed = closeModules modules args';
       # Note: the list of modules is reversed to maintain backward
       # compatibility with the old module system.  Not sure if this is
       # the most sensible policy.
       options = mergeModules prefix (reverseList closed);
-
       # Traverse options and extract the option values into the final
       # config set.  At the same time, check whether all option
       # definitions have matching declarations.
-      # !!! _module.check's value can't depend on any other config values
-      # without an infinite recursion. One way around this is to make the
-      # 'config' passed around to the modules be unconditionally unchecked,
-      # and only do the check in 'result'.
       config = yieldConfig prefix options;
       yieldConfig = prefix: set:
         let res = removeAttrs (mapAttrs (n: v:
           if isOption v then v.value
           else yieldConfig (prefix ++ [n]) v) set) ["_definedNames"];
         in
-        if options._module.check.value && set ? _definedNames then
-          foldl' (res: m:
-            foldl' (res: name:
-              if set ? ${name} then res else throw "The option `${showOption (prefix ++ [name])}' defined in `${m.file}' does not exist.")
+        if check && set ? _definedNames then
+          fold (m: res:
+            fold (name: res:
+              if hasAttr name set then res else throw "The option `${showOption (prefix ++ [name])}' defined in `${m.file}' does not exist.")
               res m.names)
             res set._definedNames
         else
@@ -91,11 +43,9 @@ rec {
     let
       toClosureList = file: parentKey: imap (n: x:
         if isAttrs x || isFunction x then
-          let key = "${parentKey}:anon-${toString n}"; in
-          unifyModuleSyntax file key (unpackSubmodule (applyIfFunction key) x args)
+          unifyModuleSyntax file "${parentKey}:anon-${toString n}" (applyIfFunction x args)
         else
-          let file = toString x; key = toString x; in
-          unifyModuleSyntax file key (applyIfFunction key (import x) args));
+          unifyModuleSyntax (toString x) (toString x) (applyIfFunction (import x) args));
     in
       builtins.genericClosure {
         startSet = toClosureList unknownModule "" modules;
@@ -108,7 +58,7 @@ rec {
     if m ? config || m ? options then
       let badAttrs = removeAttrs m ["imports" "options" "config" "key" "_file"]; in
       if badAttrs != {} then
-        throw "Module `${key}' has an unsupported attribute `${head (attrNames badAttrs)}'. This is caused by assignments to the top-level attributes `config' or `options'."
+        throw "Module `${key}' has an unsupported attribute `${head (attrNames badAttrs)}'."
       else
         { file = m._file or file;
           key = toString m.key or key;
@@ -124,46 +74,7 @@ rec {
         config = removeAttrs m ["key" "_file" "require" "imports"];
       };
 
-  applyIfFunction = key: f: args@{ config, options, lib, ... }: if isFunction f then
-    let
-      # Module arguments are resolved in a strict manner when attribute set
-      # deconstruction is used.  As the arguments are now defined with the
-      # config._module.args option, the strictness used on the attribute
-      # set argument would cause an infinite loop, if the result of the
-      # option is given as argument.
-      #
-      # To work-around the strictness issue on the deconstruction of the
-      # attributes set argument, we create a new attribute set which is
-      # constructed to satisfy the expected set of attributes.  Thus calling
-      # a module will resolve strictly the attributes used as argument but
-      # not their values.  The values are forwarding the result of the
-      # evaluation of the option.
-      requiredArgs = builtins.attrNames (builtins.functionArgs f);
-      context = name: ''while evaluating the module argument `${name}' in "${key}":'';
-      extraArgs = builtins.listToAttrs (map (name: {
-        inherit name;
-        value = addErrorContext (context name)
-          (args.${name} or config._module.args.${name});
-      }) requiredArgs);
-
-      # Note: we append in the opposite order such that we can add an error
-      # context on the explicited arguments of "args" too. This update
-      # operator is used to make the "args@{ ... }: with args.lib;" notation
-      # works.
-    in f (args // extraArgs)
-  else
-    f;
-
-  /* We have to pack and unpack submodules. We cannot wrap the expected
-     result of the function as we would no longer be able to list the arguments
-     of the submodule. (see applyIfFunction) */
-  unpackSubmodule = unpack: m: args:
-    if isType "submodule" m then
-      { _file = m.file; } // (unpack m.submodule args)
-    else unpack m args;
-
-  packSubmodule = file: m:
-    { _type = "submodule"; file = file; submodule = m; };
+  applyIfFunction = f: arg: if isFunction f then f arg else f;
 
   /* Merge a list of modules.  This will recurse over the option
      declarations in all modules, combining them into a single set.
@@ -182,22 +93,25 @@ rec {
         let
           loc = prefix ++ [name];
           # Get all submodules that declare ‘name’.
-          decls = concatMap (m:
-            if m.options ? ${name}
-              then [ { inherit (m) file; options = m.options.${name}; } ]
+          decls = concatLists (map (m:
+            if hasAttr name m.options
+              then [ { inherit (m) file; options = getAttr name m.options; } ]
               else []
-            ) options;
+            ) options);
           # Get all submodules that define ‘name’.
-          defns = concatMap (m:
-            if m.config ? ${name}
+          defns = concatLists (map (m:
+            if hasAttr name m.config
               then map (config: { inherit (m) file; inherit config; })
-                (pushDownProperties m.config.${name})
+                (pushDownProperties (getAttr name m.config))
+              else []
+            ) configs);
+          nrOptions = count (m: isOption m.options) decls;
+          # Process mkMerge and mkIf properties.
+          defns' = concatMap (m:
+            if hasAttr name m.config
+              then map (m': { inherit (m) file; value = m'; }) (dischargeProperties (getAttr name m.config))
               else []
             ) configs;
-          nrOptions = count (m: isOption m.options) decls;
-          # Extract the definitions for this loc
-          defns' = map (m: { inherit (m) file; value = m.config.${name}; })
-            (filter (m: m.config ? ${name}) configs);
         in
           if nrOptions == length decls then
             let opt = fixupOptionType loc (mergeOptionDecls loc decls);
@@ -218,41 +132,20 @@ rec {
      The exception is the ‘options’ attribute, which specifies
      sub-options.  These can be specified multiple times to allow one
      module to add sub-options to an option declared somewhere else
-     (e.g. multiple modules define sub-options for ‘fileSystems’).
-
-     'loc' is the list of attribute names where the option is located.
-
-     'opts' is a list of modules.  Each module has an options attribute which
-     correspond to the definition of 'loc' in 'opt.file'. */
+     (e.g. multiple modules define sub-options for ‘fileSystems’). */
   mergeOptionDecls = loc: opts:
-    foldl' (res: opt:
+    fold (opt: res:
       if opt.options ? default && res ? default ||
          opt.options ? example && res ? example ||
          opt.options ? description && res ? description ||
          opt.options ? apply && res ? apply ||
-         # Accept to merge options which have identical types.
-         opt.options ? type && res ? type && opt.options.type.name != res.type.name
+         opt.options ? type && res ? type
       then
         throw "The option `${showOption loc}' in `${opt.file}' is already declared in ${showFiles res.declarations}."
       else
-        let
-          /* Add the modules of the current option to the list of modules
-             already collected.  The options attribute except either a list of
-             submodules or a submodule. For each submodule, we add the file of the
-             current option declaration as the file use for the submodule.  If the
-             submodule defines any filename, then we ignore the enclosing option file. */
-          options' = toList opt.options.options;
-          coerceOption = file: opt:
-            if isFunction opt then packSubmodule file opt
-            else packSubmodule file { options = opt; };
-          getSubModules = opt.options.type.getSubModules or null;
-          submodules =
-            if getSubModules != null then map (packSubmodule opt.file) getSubModules ++ res.options
-            else if opt.options ? options then map (coerceOption opt.file) options' ++ res.options
-            else res.options;
-        in opt.options // res //
-          { declarations = res.declarations ++ [opt.file];
-            options = submodules;
+        opt.options // res //
+          { declarations = [opt.file] ++ res.declarations;
+            options = if opt.options ? options then [(toList opt.options.options ++ res.options)] else [];
           }
     ) { inherit loc; declarations = []; options = []; } opts;
 
@@ -260,69 +153,38 @@ rec {
      config value. */
   evalOptionValue = loc: opt: defs:
     let
-      # Add in the default value for this option, if any.
-      defs' =
-          (optional (opt ? default)
-            { file = head opt.declarations; value = mkOptionDefault opt.default; }) ++ defs;
-
-      # Handle properties, check types, and merge everything together.
-      res =
-        if opt.readOnly or false && length defs' > 1 then
-          throw "The option `${showOption loc}' is read-only, but it's set multiple times."
-        else
-          mergeDefinitions loc opt.type defs';
-
-      # Check whether the option is defined, and apply the ‘apply’
-      # function to the merged value.  This allows options to yield a
-      # value computed from the definitions.
-      value =
-        if !res.isDefined then
+      # Process mkOverride properties, adding in the default
+      # value specified in the option declaration (if any).
+      defsFinal' = filterOverrides
+        ((if opt ? default then [{ file = head opt.declarations; value = mkOptionDefault opt.default; }] else []) ++ defs);
+      # Sort mkOrder properties.
+      defsFinal =
+        # Avoid sorting if we don't have to.
+        if any (def: def.value._type or "" == "order") defsFinal'
+        then sortProperties defsFinal'
+        else defsFinal';
+      files = map (def: def.file) defsFinal;
+      # Type-check the remaining definitions, and merge them if
+      # possible.
+      merged =
+        if defsFinal == [] then
           throw "The option `${showOption loc}' is used but not defined."
-        else if opt ? apply then
-          opt.apply res.mergedValue
         else
-          res.mergedValue;
-
+          fold (def: res:
+            if opt.type.check def.value then res
+            else throw "The option value `${showOption loc}' in `${def.file}' is not a ${opt.type.name}.")
+            (opt.type.merge loc defsFinal) defsFinal;
+      # Finally, apply the ‘apply’ function to the merged
+      # value.  This allows options to yield a value computed
+      # from the definitions.
+      value = (opt.apply or id) merged;
     in opt //
       { value = addErrorContext "while evaluating the option `${showOption loc}':" value;
-        definitions = map (def: def.value) res.defsFinal;
-        files = map (def: def.file) res.defsFinal;
-        inherit (res) isDefined;
+        definitions = map (def: def.value) defsFinal;
+        isDefined = defsFinal != [];
+        inherit files;
       };
 
-  # Merge definitions of a value of a given type.
-  mergeDefinitions = loc: type: defs: rec {
-    defsFinal =
-      let
-        # Process mkMerge and mkIf properties.
-        defs' = concatMap (m:
-          map (value: { inherit (m) file; inherit value; }) (dischargeProperties m.value)
-        ) defs;
-
-        # Process mkOverride properties.
-        defs'' = filterOverrides defs';
-
-        # Sort mkOrder properties.
-        defs''' =
-          # Avoid sorting if we don't have to.
-          if any (def: def.value._type or "" == "order") defs''
-          then sortProperties defs''
-          else defs'';
-      in defs''';
-
-    # Type-check the remaining definitions, and merge them.
-    mergedValue = foldl' (res: def:
-      if type.check def.value then res
-      else throw "The option value `${showOption loc}' in `${def.file}' is not a ${type.name}.")
-      (type.merge loc defsFinal) defsFinal;
-
-    isDefined = defsFinal != [];
-
-    optionalValue =
-      if isDefined then { value = mergedValue; }
-      else {};
-  };
-
   /* Given a config set, expand mkMerge properties, and push down the
      other properties into the children.  The result is a list of
      config sets that do not have properties at top-level.  For
@@ -332,7 +194,7 @@ rec {
 
      is transformed into
 
-       [ { boot = set1; } { boot = mkIf cond set2; services = mkIf cond set3; } ].
+       [ { boot = set1; } { boot = mkIf cond set2; services mkIf cond set3; } ].
 
      This transform is the critical step that allows mkIf conditions
      to refer to the full configuration without creating an infinite
@@ -392,7 +254,8 @@ rec {
     let
       defaultPrio = 100;
       getPrio = def: if def.value._type or "" == "override" then def.value.priority else defaultPrio;
-      highestPrio = foldl' (prio: def: min (getPrio def) prio) 9999 defs;
+      min = x: y: if builtins.lessThan x y then x else y;
+      highestPrio = fold (def: prio: min (getPrio def) prio) 9999 defs;
       strip = def: if def.value._type or "" == "override" then def // { value = def.value.content; } else def;
     in concatMap (def: if getPrio def == highestPrio then [(strip def)] else []) defs;
 
@@ -410,24 +273,23 @@ rec {
     in sort compare defs';
 
   /* Hack for backward compatibility: convert options of type
-     optionSet to options of type submodule.  FIXME: remove
-     eventually. */
+     optionSet to configOf.  FIXME: remove eventually. */
   fixupOptionType = loc: opt:
     let
-      options = opt.options or
-        (throw "Option `${showOption loc'}' has type optionSet but has no option attribute, in ${showFiles opt.declarations}.");
+      options' = opt.options or
+        (throw "Option `${showOption loc'}' has type optionSet but has no option attribute.");
+      coerce = x:
+        if isFunction x then x
+        else { config, ... }: { options = x; };
+      options = map coerce (flatten options');
       f = tp:
-        if tp.name == "option set" || tp.name == "submodule" then
-          throw "The option ${showOption loc} uses submodules without a wrapping type, in ${showFiles opt.declarations}."
+        if tp.name == "option set" then types.submodule options
         else if tp.name == "attribute set of option sets" then types.attrsOf (types.submodule options)
         else if tp.name == "list or attribute set of option sets" then types.loaOf (types.submodule options)
         else if tp.name == "list of option sets" then types.listOf (types.submodule options)
         else if tp.name == "null or option set" then types.nullOr (types.submodule options)
         else tp;
-    in
-      if opt.type.getSubModules or null == null
-      then opt // { type = f (opt.type or types.unspecified); }
-      else opt // { type = opt.type.substSubModules opt.options; options = []; };
+    in opt // { type = f (opt.type or types.unspecified); };
 
 
   /* Properties. */
@@ -470,97 +332,7 @@ rec {
   mkAfter = mkOrder 1500;
 
 
-  # Convenient property used to transfer all definitions and their
-  # properties from one option to another. This property is useful for
-  # renaming options, and also for including properties from another module
-  # system, including sub-modules.
-  #
-  #   { config, options, ... }:
-  #
-  #   {
-  #     # 'bar' might not always be defined in the current module-set.
-  #     config.foo.enable = mkAliasDefinitions (options.bar.enable or {});
-  #
-  #     # 'barbaz' has to be defined in the current module-set.
-  #     config.foobar.paths = mkAliasDefinitions options.barbaz.paths;
-  #   }
-  #
-  # Note, this is different than taking the value of the option and using it
-  # as a definition, as the new definition will not keep the mkOverride /
-  # mkDefault properties of the previous option.
-  #
-  mkAliasDefinitions = mkAliasAndWrapDefinitions id;
-  mkAliasAndWrapDefinitions = wrap: option:
-    mkMerge
-      (optional (isOption option && option.isDefined)
-        (wrap (mkMerge option.definitions)));
-
-
   /* Compatibility. */
   fixMergeModules = modules: args: evalModules { inherit modules args; check = false; };
 
-
-  /* Return a module that causes a warning to be shown if the
-     specified option is defined. For example,
-
-       mkRemovedOptionModule [ "boot" "loader" "grub" "bootDevice" ]
-
-     causes a warning if the user defines boot.loader.grub.bootDevice.
-  */
-  mkRemovedOptionModule = optionName:
-    { options, ... }:
-    { options = setAttrByPath optionName (mkOption {
-        visible = false;
-      });
-      config.warnings =
-        let opt = getAttrFromPath optionName options; in
-        optional opt.isDefined
-          "The option definition `${showOption optionName}' in ${showFiles opt.files} no longer has any effect; please remove it.";
-    };
-
-  /* Return a module that causes a warning to be shown if the
-     specified "from" option is defined; the defined value is however
-     forwarded to the "to" option. This can be used to rename options
-     while providing backward compatibility. For example,
-
-       mkRenamedOptionModule [ "boot" "copyKernels" ] [ "boot" "loader" "grub" "copyKernels" ]
-
-     forwards any definitions of boot.copyKernels to
-     boot.loader.grub.copyKernels while printing a warning.
-  */
-  mkRenamedOptionModule = from: to: doRename {
-    inherit from to;
-    visible = false;
-    warn = true;
-    use = builtins.trace "Obsolete option `${showOption from}' is used. It was renamed to `${showOption to}'.";
-  };
-
-  /* Like ‘mkRenamedOptionModule’, but doesn't show a warning. */
-  mkAliasOptionModule = from: to: doRename {
-    inherit from to;
-    visible = true;
-    warn = false;
-    use = id;
-  };
-
-  doRename = { from, to, visible, warn, use }:
-    let
-      toOf = attrByPath to
-        (abort "Renaming error: option `${showOption to}' does not exists.");
-    in
-      { config, options, ... }:
-      { options = setAttrByPath from (mkOption {
-          description = "Alias of <option>${showOption to}</option>.";
-          apply = x: use (toOf config);
-        });
-        config = {
-        /*
-          warnings =
-            let opt = getAttrFromPath from options; in
-            optional (warn && opt.isDefined)
-              "The option `${showOption from}' defined in ${showFiles opt.files} has been renamed to `${showOption to}'.";
-              */
-        } // setAttrByPath to (mkAliasDefinitions (getAttrFromPath from options));
-      };
-
 }

lib/options.nix

@@ -4,6 +4,7 @@ let lib = import ./default.nix; in
 
 with import ./trivial.nix;
 with import ./lists.nix;
+with import ./misc.nix;
 with import ./attrsets.nix;
 with import ./strings.nix;
 
@@ -19,7 +20,6 @@ rec {
     , apply ? null # Function that converts the option value to something else.
     , internal ? null # Whether the option is for NixOS developers only.
     , visible ? null # Whether the option shows up in the manual.
-    , readOnly ? null # Whether the option can be set only once
     , options ? null # Obsolete, used by types.optionSet.
     } @ attrs:
     attrs // { _type = "option"; };
@@ -31,49 +31,37 @@ rec {
     type = lib.types.bool;
   };
 
-  # This option accept anything, but it does not produce any result.  This
-  # is useful for sharing a module across different module sets without
-  # having to implement similar features as long as the value of the options
-  # are not expected.
-  mkSinkUndeclaredOptions = attrs: mkOption ({
-    internal = true;
-    visible = false;
-    default = false;
-    description = "Sink for option definitions.";
-    type = mkOptionType {
-      name = "sink";
-      check = x: true;
-      merge = loc: defs: false;
-    };
-    apply = x: throw "Option value is not readable because the option is not declared.";
-  } // attrs);
-
   mergeDefaultOption = loc: defs:
     let list = getValues defs; in
     if length list == 1 then head list
     else if all isFunction list then x: mergeDefaultOption loc (map (f: f x) list)
     else if all isList list then concatLists list
-    else if all isAttrs list then foldl' lib.mergeAttrs {} list
-    else if all isBool list then foldl' lib.or false list
+    else if all isAttrs list then fold lib.mergeAttrs {} list
+    else if all isBool list then fold lib.or false list
     else if all isString list then lib.concatStrings list
     else if all isInt list && all (x: x == head list) list then head list
     else throw "Cannot merge definitions of `${showOption loc}' given in ${showFiles (getFiles defs)}.";
 
+  /* Obsolete, will remove soon.  Specify an option type or apply
+     function instead.  */
+  mergeTypedOption = typeName: predicate: merge: loc: list:
+    let list' = map (x: x.value) list; in
+    if all predicate list then merge list'
+    else throw "Expected a ${typeName}.";
+
+  mergeEnableOption = mergeTypedOption "boolean"
+    (x: true == x || false == x) (fold lib.or false);
+
+  mergeListOption = mergeTypedOption "list" isList concatLists;
+
+  mergeStringOption = mergeTypedOption "string" isString lib.concatStrings;
+
   mergeOneOption = loc: defs:
     if defs == [] then abort "This case should never happen."
     else if length defs != 1 then
       throw "The unique option `${showOption loc}' is defined multiple times, in ${showFiles (getFiles defs)}."
     else (head defs).value;
 
-  /* "Merge" option definitions by checking that they all have the same value. */
-  mergeEqualOption = loc: defs:
-    if defs == [] then abort "This case should never happen."
-    else foldl' (val: def:
-      if def.value != val then
-        throw "The option `${showOption loc}' has conflicting definitions, in ${showFiles (getFiles defs)}."
-      else
-        val) (head defs).value defs;
-
   getValues = map (x: x.value);
   getFiles = map (x: x.file);
 
@@ -83,7 +71,7 @@ rec {
   optionAttrSetToDocList = optionAttrSetToDocList' [];
 
   optionAttrSetToDocList' = prefix: options:
-    concatMap (opt:
+    fold (opt: rest:
       let
         docOption = rec {
           name = showOption opt.loc;
@@ -91,18 +79,17 @@ rec {
           declarations = filter (x: x != unknownModule) opt.declarations;
           internal = opt.internal or false;
           visible = opt.visible or true;
-          readOnly = opt.readOnly or false;
-          type = opt.type.name or null;
         }
-        // (if opt ? example then { example = scrubOptionValue opt.example; } else {})
-        // (if opt ? default then { default = scrubOptionValue opt.default; } else {})
-        // (if opt ? defaultText then { default = opt.defaultText; } else {});
+        // optionalAttrs (opt ? example) { example = scrubOptionValue opt.example; }
+        // optionalAttrs (opt ? default) { default = scrubOptionValue opt.default; }
+        // optionalAttrs (opt ? defaultText) { default = opt.defaultText; };
 
         subOptions =
           let ss = opt.type.getSubOptions opt.loc;
           in if ss != {} then optionAttrSetToDocList' opt.loc ss else [];
       in
-        [ docOption ] ++ subOptions) (collect isOption options);
+        # FIXME: expensive, O(n^2)
+        [ docOption ] ++ subOptions ++ rest) [] (collect isOption options);
 
 
   /* This function recursively removes all derivation attributes from

lib/platforms.nix

@@ -7,14 +7,10 @@ rec {
   freebsd = ["i686-freebsd" "x86_64-freebsd"];
   openbsd = ["i686-openbsd" "x86_64-openbsd"];
   netbsd = ["i686-netbsd" "x86_64-netbsd"];
-  cygwin = ["i686-cygwin" "x86_64-cygwin"];
+  cygwin = ["i686-cygwin"];
   unix = linux ++ darwin ++ freebsd ++ openbsd;
   all = linux ++ darwin ++ cygwin ++ freebsd ++ openbsd;
   none = [];
-  allBut = platforms: lists.filter (x: !(builtins.elem x platforms)) all;
+  allBut = platform: lists.filter (x: platform != x) all;
   mesaPlatforms = ["i686-linux" "x86_64-linux" "x86_64-darwin" "armv5tel-linux" "armv6l-linux"];
-  x86_64 = ["x86_64-linux" "x86_64-darwin" "x86_64-freebsd" "x86_64-openbsd" "x86_64-netbsd" "x86_64-cygwin"];
-  i686 = ["i686-linux" "i686-freebsd" "i686-netbsd" "i686-cygwin"];
-  arm = ["armv5tel-linux" "armv6l-linux" "armv7l-linux" ];
-  mips = [ "mips64el-linux" ];
 }

lib/sources.nix

@@ -21,12 +21,12 @@ rec {
 
 
   # Get all files ending with the specified suffices from the given
-  # directory or its descendants.  E.g. `sourceFilesBySuffices ./dir
-  # [".xml" ".c"]'.
+  # directory.  E.g. `sourceFilesBySuffices ./dir [".xml" ".c"]'.
   sourceFilesBySuffices = path: exts:
     let filter = name: type:
       let base = baseNameOf (toString name);
-      in type == "directory" || lib.any (ext: lib.hasSuffix ext base) exts;
+      in type != "directory" && lib.any (ext: lib.hasSuffix ext base) exts;
     in builtins.filterSource filter path;
 
+
 }

lib/strings-with-deps.nix

@@ -62,8 +62,8 @@ rec {
             in { result = x.result ++ [entry.text] ++ y.result;
                  done = y.done;
                }
-          else if done ? ${entry} then f done (tail todo)
-          else f (done // listToAttrs [{name = entry; value = 1;}]) ([predefined.${entry}] ++ tail todo);
+          else if hasAttr entry done then f done (tail todo)
+          else f (done // listToAttrs [{name = entry; value = 1;}]) ([(builtins.getAttr entry predefined)] ++ tail todo);
     in (f {} arg).result;
 
   textClosureMap = f: predefined: names:

lib/strings.nix

@@ -2,21 +2,17 @@
 
 let lib = import ./default.nix;
 
-inherit (builtins) length;
+inherit (builtins) add sub lessThan length;
 
 in
 
 rec {
 
-  inherit (builtins) stringLength substring head tail isString replaceStrings;
+  inherit (builtins) stringLength substring head tail isString;
 
 
   # Concatenate a list of strings.
-  concatStrings =
-    if builtins ? concatStringsSep then
-      builtins.concatStringsSep ""
-    else
-      lib.foldl' (x: y: x + y) "";
+  concatStrings = lib.fold (x: y: x + y) "";
 
 
   # Map a function over a list and concatenate the resulting strings.
@@ -29,16 +25,14 @@ rec {
   intersperse = separator: list:
     if list == [] || length list == 1
     then list
-    else tail (lib.concatMap (x: [separator x]) list);
+    else [(head list) separator]
+         ++ (intersperse separator (tail list));
 
 
   # Concatenate a list of strings with a separator between each element, e.g.
   # concatStringsSep " " ["foo" "bar" "xyzzy"] == "foo bar xyzzy"
-  concatStringsSep = builtins.concatStringsSep or (separator: list:
-    concatStrings (intersperse separator list));
-
-  concatMapStringsSep = sep: f: list: concatStringsSep sep (map f list);
-  concatImapStringsSep = sep: f: list: concatStringsSep sep (lib.imap f list);
+  concatStringsSep = separator: list:
+    concatStrings (intersperse separator list);
 
 
   # Construct a Unix-style search path consisting of each `subDir"
@@ -62,15 +56,12 @@ rec {
   optionalString = cond: string: if cond then string else "";
 
 
-  # Determine whether a string has given prefix/suffix.
-  hasPrefix = pref: str:
-    substring 0 (stringLength pref) str == pref;
-  hasSuffix = suff: str:
-    let
-      lenStr = stringLength str;
-      lenSuff = stringLength suff;
-    in lenStr >= lenSuff &&
-       substring (lenStr - lenSuff) lenStr str == suff;
+  # Determine whether a filename ends in the given suffix.
+  hasSuffix = ext: fileName:
+    let lenFileName = stringLength fileName;
+        lenExt = stringLength ext;
+    in !(lessThan lenFileName lenExt) &&
+       substring (sub lenFileName lenExt) lenFileName fileName == ext;
 
 
   # Convert a string to a list of characters (i.e. singleton strings).
@@ -79,75 +70,77 @@ rec {
   # will likely be horribly inefficient; Nix is not a general purpose
   # programming language.  Complex string manipulations should, if
   # appropriate, be done in a derivation.
-  stringToCharacters = s:
-    map (p: substring p 1 s) (lib.range 0 (stringLength s - 1));
+  stringToCharacters = s: let l = stringLength s; in
+    if l == 0
+    then []
+    else map (p: substring p 1 s) (lib.range 0 (sub l 1));
 
 
-  # Manipulate a string charactter by character and replace them by
-  # strings before concatenating the results.
+  # Manipulate a string charcater by character and replace them by strings
+  # before concatenating the results.
   stringAsChars = f: s:
     concatStrings (
       map f (stringToCharacters s)
     );
 
 
-  # Escape occurrence of the elements of ‘list’ in ‘string’ by
-  # prefixing it with a backslash. For example, ‘escape ["(" ")"]
-  # "(foo)"’ returns the string ‘\(foo\)’.
-  escape = list: replaceChars list (map (c: "\\${c}") list);
+  # same as vim escape function.
+  # Each character contained in list is prefixed by "\"
+  escape = list : string :
+    stringAsChars (c: if lib.elem c list then "\\${c}" else c) string;
 
 
-  # Escape all characters that have special meaning in the Bourne shell.
+  # still ugly slow. But more correct now
+  # [] for zsh
   escapeShellArg = lib.escape (stringToCharacters "\\ ';$`()|<>\t*[]");
 
 
-  # Obsolete - use replaceStrings instead.
-  replaceChars = builtins.replaceStrings or (
-    del: new: s:
+  # replace characters by their substitutes.  This function is equivalent to
+  # the `tr' command except that one character can be replace by multiple
+  # ones.  e.g.,
+  # replaceChars ["<" ">"] ["&lt;" "&gt;"] "<foo>" returns "&lt;foo&gt;".
+  replaceChars = del: new: s:
     let
-      substList = lib.zipLists del new;
       subst = c:
-        let found = lib.findFirst (sub: sub.fst == c) null substList; in
-        if found == null then
-          c
-        else
-          found.snd;
+        (lib.fold
+          (sub: res: if sub.fst == c then sub else res)
+          {fst = c; snd = c;} (lib.zipLists del new)
+        ).snd;
     in
-      stringAsChars subst s);
+      stringAsChars subst s;
 
 
-  # Case conversion utilities.
+  # Case conversion utilities
   lowerChars = stringToCharacters "abcdefghijklmnopqrstuvwxyz";
   upperChars = stringToCharacters "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
   toLower = replaceChars upperChars lowerChars;
   toUpper = replaceChars lowerChars upperChars;
 
 
-  # Appends string context from another string.
-  addContextFrom = a: b: substring 0 0 a + b;
+  # Compares strings not requiring context equality
+  # Obviously, a workaround but works on all Nix versions
+  eqStrings = a: b: (a+(substring 0 0 b)) == ((substring 0 0 a)+b);
 
 
-  # Cut a string with a separator and produces a list of strings which
-  # were separated by this separator; e.g., `splitString "."
-  # "foo.bar.baz"' returns ["foo" "bar" "baz"].
-  splitString = _sep: _s:
+  # Cut a string with a separator and produces a list of strings which were
+  # separated by this separator. e.g.,
+  # `splitString "." "foo.bar.baz"' returns ["foo" "bar" "baz"].
+  splitString = sep: s:
     let
-      sep = addContextFrom _s _sep;
-      s = addContextFrom _sep _s;
       sepLen = stringLength sep;
       sLen = stringLength s;
-      lastSearch = sLen - sepLen;
+      lastSearch = sub sLen sepLen;
       startWithSep = startAt:
         substring startAt sepLen s == sep;
 
       recurse = index: startAt:
-        let cutUntil = i: [(substring startAt (i - startAt) s)]; in
-        if index < lastSearch then
+        let cutUntil = i: [(substring startAt (sub i startAt) s)]; in
+        if lessThan index lastSearch then
           if startWithSep index then
-            let restartAt = index + sepLen; in
+            let restartAt = add index sepLen; in
             cutUntil index ++ recurse restartAt restartAt
           else
-            recurse (index + 1) startAt
+            recurse (add index 1) startAt
         else
           cutUntil sLen;
     in
@@ -162,8 +155,8 @@ rec {
       preLen = stringLength pre;
       sLen = stringLength s;
     in
-      if hasPrefix pre s then
-        substring preLen (sLen - preLen) s
+      if pre == substring 0 preLen s then
+        substring preLen (sub sLen preLen) s
       else
         s;
 
@@ -191,36 +184,18 @@ rec {
 
 
   # Extract name with version from URL. Ask for separator which is
-  # supposed to start extension.
-  nameFromURL = url: sep:
-    let
-      components = splitString "/" url;
-      filename = lib.last components;
-      name = builtins.head (splitString sep filename);
-    in assert name !=  filename; name;
+  # supposed to start extension
+  nameFromURL = url: sep: let
+    components = splitString "/" url;
+    filename = lib.last components;
+    name = builtins.head (splitString sep filename);
+  in
+  assert ! eqStrings name filename;
+  name;
 
 
   # Create an --{enable,disable}-<feat> string that can be passed to
   # standard GNU Autoconf scripts.
   enableFeature = enable: feat: "--${if enable then "enable" else "disable"}-${feat}";
 
-
-  # Create a fixed width string with additional prefix to match
-  # required width.
-  fixedWidthString = width: filler: str:
-    let
-      strw = lib.stringLength str;
-      reqWidth = width - (lib.stringLength filler);
-    in
-      assert strw <= width;
-      if strw == width then str else filler + fixedWidthString reqWidth filler str;
-
-
-  # Format a number adding leading zeroes up to fixed width.
-  fixedWidthNumber = width: n: fixedWidthString width "0" (toString n);
-
-
-  # Check whether a value is a store path.
-  isStorePath = x: builtins.substring 0 1 (toString x) == "/" && dirOf (builtins.toPath x) == builtins.storeDir;
-
 }

lib/systems.nix

@@ -24,7 +24,7 @@ rec {
 
   isCpuType = x: isType "cpu-type" x
     && elem x.bits [8 16 32 64 128]
-    && (8 < x.bits -> isSignificantByte x.significantByte);
+    && (builtins.lessThan 8 x.bits -> isSignificantByte x.significantByte);
 
   cpuTypes = with significantBytes;
     setTypes "cpu-type" {

lib/tests/modules.sh

@@ -1,127 +0,0 @@
-#!/bin/sh
-#
-# This script is used to test that the module system is working as expected.
-# By default it test the version of nixpkgs which is defined in the NIX_PATH.
-
-cd ./modules
-
-pass=0
-fail=0
-
-evalConfig() {
-    local attr=$1
-    shift;
-    local script="import ./default.nix { modules = [ $@ ];}"
-    nix-instantiate --timeout 1 -E "$script" -A "$attr" --eval-only --show-trace
-}
-
-reportFailure() {
-    local attr=$1
-    shift;
-    local script="import ./default.nix { modules = [ $@ ];}"
-    echo 2>&1 "$ nix-instantiate -E '$script' -A '$attr' --eval-only"
-    evalConfig "$attr" "$@"
-    fail=$((fail + 1))
-}
-
-checkConfigOutput() {
-    local outputContains=$1
-    shift;
-    if evalConfig "$@" 2>/dev/null | grep --silent "$outputContains" ; then
-        pass=$((pass + 1))
-        return 0;
-    else
-        echo 2>&1 "error: Expected result matching '$outputContains', while evaluating"
-        reportFailure "$@"
-        return 1
-    fi
-}
-
-checkConfigError() {
-    local errorContains=$1
-    local err=""
-    shift;
-    if err==$(evalConfig "$@" 2>&1 >/dev/null); then
-        echo 2>&1 "error: Expected error code, got exit code 0, while evaluating"
-        reportFailure "$@"
-        return 1
-    else
-        if echo "$err" | grep --silent "$errorContains" ; then
-            pass=$((pass + 1))
-            return 0;
-        else
-            echo 2>&1 "error: Expected error matching '$errorContains', while evaluating"
-            reportFailure "$@"
-            return 1
-        fi
-    fi
-}
-
-# Check boolean option.
-checkConfigOutput "false" config.enable ./declare-enable.nix
-checkConfigError 'The option .* defined in .* does not exist.' config.enable ./define-enable.nix
-
-# Check mkForce without submodules.
-set -- config.enable ./declare-enable.nix ./define-enable.nix
-checkConfigOutput "true" "$@"
-checkConfigOutput "false" "$@" ./define-force-enable.nix
-checkConfigOutput "false" "$@" ./define-enable-force.nix
-
-# Check mkForce with option and submodules.
-checkConfigError 'attribute .*foo.* .* not found' config.loaOfSub.foo.enable ./declare-loaOfSub-any-enable.nix
-checkConfigOutput 'false' config.loaOfSub.foo.enable ./declare-loaOfSub-any-enable.nix ./define-loaOfSub-foo.nix
-set -- config.loaOfSub.foo.enable ./declare-loaOfSub-any-enable.nix ./define-loaOfSub-foo-enable.nix
-checkConfigOutput 'true' "$@"
-checkConfigOutput 'false' "$@" ./define-force-loaOfSub-foo-enable.nix
-checkConfigOutput 'false' "$@" ./define-loaOfSub-force-foo-enable.nix
-checkConfigOutput 'false' "$@" ./define-loaOfSub-foo-force-enable.nix
-checkConfigOutput 'false' "$@" ./define-loaOfSub-foo-enable-force.nix
-
-# Check overriding effect of mkForce on submodule definitions.
-checkConfigError 'attribute .*bar.* .* not found' config.loaOfSub.bar.enable ./declare-loaOfSub-any-enable.nix ./define-loaOfSub-foo.nix
-checkConfigOutput 'false' config.loaOfSub.bar.enable ./declare-loaOfSub-any-enable.nix ./define-loaOfSub-foo.nix ./define-loaOfSub-bar.nix
-set -- config.loaOfSub.bar.enable ./declare-loaOfSub-any-enable.nix ./define-loaOfSub-foo.nix ./define-loaOfSub-bar-enable.nix
-checkConfigOutput 'true' "$@"
-checkConfigError 'attribute .*bar.* .* not found' "$@" ./define-force-loaOfSub-foo-enable.nix
-checkConfigError 'attribute .*bar.* .* not found' "$@" ./define-loaOfSub-force-foo-enable.nix
-checkConfigOutput 'true' "$@" ./define-loaOfSub-foo-force-enable.nix
-checkConfigOutput 'true' "$@" ./define-loaOfSub-foo-enable-force.nix
-
-# Check mkIf with submodules.
-checkConfigError 'attribute .*foo.* .* not found' config.loaOfSub.foo.enable ./declare-enable.nix ./declare-loaOfSub-any-enable.nix
-set -- config.loaOfSub.foo.enable ./declare-enable.nix ./declare-loaOfSub-any-enable.nix
-checkConfigError 'attribute .*foo.* .* not found' "$@" ./define-if-loaOfSub-foo-enable.nix
-checkConfigError 'attribute .*foo.* .* not found' "$@" ./define-loaOfSub-if-foo-enable.nix
-checkConfigError 'attribute .*foo.* .* not found' "$@" ./define-loaOfSub-foo-if-enable.nix
-checkConfigOutput 'false' "$@" ./define-loaOfSub-foo-enable-if.nix
-checkConfigOutput 'true' "$@" ./define-enable.nix ./define-if-loaOfSub-foo-enable.nix
-checkConfigOutput 'true' "$@" ./define-enable.nix ./define-loaOfSub-if-foo-enable.nix
-checkConfigOutput 'true' "$@" ./define-enable.nix ./define-loaOfSub-foo-if-enable.nix
-checkConfigOutput 'true' "$@" ./define-enable.nix ./define-loaOfSub-foo-enable-if.nix
-
-# Check _module.args.
-set -- config.enable ./declare-enable.nix ./define-enable-with-custom-arg.nix
-checkConfigError 'while evaluating the module argument .*custom.* in .*define-enable-with-custom-arg.nix.*:' "$@"
-checkConfigOutput "true" "$@" ./define-_module-args-custom.nix
-
-# Check that using _module.args on imports cause infinite recursions, with
-# the proper error context.
-set -- "$@" ./define-_module-args-custom.nix ./import-custom-arg.nix
-checkConfigError 'while evaluating the module argument .*custom.* in .*import-custom-arg.nix.*:' "$@"
-checkConfigError 'infinite recursion encountered' "$@"
-
-# Check _module.check.
-set -- config.enable ./declare-enable.nix ./define-enable.nix ./define-loaOfSub-foo.nix
-checkConfigError 'The option .* defined in .* does not exist.' "$@"
-checkConfigOutput "true" "$@" ./define-module-check.nix
-
-cat <<EOF
-====== module tests ======
-$pass Pass
-$fail Fail
-EOF
-
-if test $fail -ne 0; then
-    exit 1
-fi
-exit 0

lib/tests/modules/declare-enable.nix

@@ -1,14 +0,0 @@
-{ lib, ... }:
-
-{
-  options = {
-    enable = lib.mkOption {
-      default = false;
-      example = true;
-      type = lib.types.bool;
-      description = ''
-        Some descriptive text
-      '';
-    };
-  };
-}

lib/tests/modules/declare-loaOfSub-any-enable.nix

@@ -1,29 +0,0 @@
-{ lib, ... }:
-
-let
-  submod = { ... }: {
-    options = {
-      enable = lib.mkOption {
-        default = false;
-        example = true;
-        type = lib.types.bool;
-        description = ''
-          Some descriptive text
-        '';
-      };
-    };
-  };
-in
-
-{
-  options = {
-    loaOfSub = lib.mkOption {
-      default = {};
-      example = {};
-      type = lib.types.loaOf (lib.types.submodule [ submod ]);
-      description = ''
-        Some descriptive text
-      '';
-    };
-  };
-}

lib/tests/modules/default.nix

@@ -1,7 +0,0 @@
-{ lib ? import <nixpkgs/lib>, modules ? [] }:
-
-{
-  inherit (lib.evalModules {
-    inherit modules;
-  }) config options;
-}

lib/tests/modules/define-_module-args-custom.nix

@@ -1,7 +0,0 @@
-{ lib, ... }:
-
-{
-  config = {
-    _module.args.custom = true;
-  };
-}

lib/tests/modules/define-enable-force.nix

@@ -1,5 +0,0 @@
-{ lib, ... }:
-
-{
-  enable = lib.mkForce false;
-}

lib/tests/modules/define-enable-with-custom-arg.nix

@@ -1,7 +0,0 @@
-{ lib, custom, ... }:
-
-{
-  config = {
-    enable = custom;
-  };
-}

lib/tests/modules/define-enable.nix

@@ -1,3 +0,0 @@
-{
-  enable = true;
-}

lib/tests/modules/define-force-enable.nix

@@ -1,5 +0,0 @@
-{ lib, ... }:
-
-lib.mkForce {
-  enable = false;
-}

lib/tests/modules/define-force-loaOfSub-foo-enable.nix

@@ -1,5 +0,0 @@
-{ lib, ... }:
-
-lib.mkForce {
-  loaOfSub.foo.enable = false;
-}

lib/tests/modules/define-if-loaOfSub-foo-enable.nix

@@ -1,5 +0,0 @@
-{ config, lib, ... }:
-
-lib.mkIf config.enable {
-  loaOfSub.foo.enable = true;
-}

lib/tests/modules/define-loaOfSub-bar-enable.nix

@@ -1,3 +0,0 @@
-{
-  loaOfSub.bar.enable = true;
-}

lib/tests/modules/define-loaOfSub-bar.nix

@@ -1,3 +0,0 @@
-{
-  loaOfSub.bar = {};
-}

lib/tests/modules/define-loaOfSub-foo-enable-force.nix

@@ -1,5 +0,0 @@
-{ lib, ... }:
-
-{
-  loaOfSub.foo.enable = lib.mkForce false;
-}

lib/tests/modules/define-loaOfSub-foo-enable-if.nix

@@ -1,5 +0,0 @@
-{ config, lib, ... }:
-
-{
-  loaOfSub.foo.enable = lib.mkIf config.enable true;
-}

lib/tests/modules/define-loaOfSub-foo-enable.nix

@@ -1,3 +0,0 @@
-{
-  loaOfSub.foo.enable = true;
-}

lib/tests/modules/define-loaOfSub-foo-force-enable.nix

@@ -1,7 +0,0 @@
-{ lib, ... }:
-
-{
-  loaOfSub.foo = lib.mkForce {
-    enable = false;
-  };
-}

lib/tests/modules/define-loaOfSub-foo-if-enable.nix

@@ -1,7 +0,0 @@
-{ config, lib, ... }:
-
-{
-  loaOfSub.foo = lib.mkIf config.enable {
-    enable = true;
-  };
-}

lib/tests/modules/define-loaOfSub-foo.nix

@@ -1,3 +0,0 @@
-{
-  loaOfSub.foo = {};
-}

lib/tests/modules/define-loaOfSub-force-foo-enable.nix

@@ -1,7 +0,0 @@
-{ lib, ... }:
-
-{
-  loaOfSub = lib.mkForce {
-    foo.enable = false;
-  };
-}

lib/tests/modules/define-loaOfSub-if-foo-enable.nix

@@ -1,7 +0,0 @@
-{ config, lib, ... }:
-
-{
-  loaOfSub = lib.mkIf config.enable {
-    foo.enable = true;
-  };
-}

lib/tests/modules/define-module-check.nix

@@ -1,3 +0,0 @@
-{
-  _module.check = false;
-}

lib/tests/modules/import-custom-arg.nix

@@ -1,6 +0,0 @@
-{ lib, custom, ... }:
-
-{
-  imports = []
-  ++ lib.optional custom ./define-enable-force.nix;
-}

lib/tests/release.nix

@@ -1,31 +0,0 @@
-{ nixpkgs }:
-
-with import ./../.. { };
-with lib;
-
-stdenv.mkDerivation {
-  name = "nixpkgs-lib-tests";
-  buildInputs = [ nix ];
-  NIX_PATH="nixpkgs=${nixpkgs}";
-
-  buildCommand = ''
-    datadir="${nix}/share"
-    export TEST_ROOT=$(pwd)/test-tmp
-    export NIX_STORE_DIR=$TEST_ROOT/store
-    export NIX_LOCALSTATE_DIR=$TEST_ROOT/var
-    export NIX_LOG_DIR=$TEST_ROOT/var/log/nix
-    export NIX_STATE_DIR=$TEST_ROOT/var/nix
-    export NIX_DB_DIR=$TEST_ROOT/db
-    export NIX_CONF_DIR=$TEST_ROOT/etc
-    export NIX_MANIFESTS_DIR=$TEST_ROOT/var/nix/manifests
-    export NIX_BUILD_HOOK=
-    export PAGER=cat
-    cacheDir=$TEST_ROOT/binary-cache
-    nix-store --init
-
-    cd ${nixpkgs}/lib/tests
-    ./modules.sh
-
-    touch $out
-  '';
-}

lib/trivial.nix

@@ -1,3 +1,8 @@
+with {
+  inherit (import ./lists.nix) deepSeqList;
+  inherit (import ./attrsets.nix) deepSeqAttrs;
+};
+
 rec {
 
   # Identity function.
@@ -18,11 +23,23 @@ rec {
   # Flip the order of the arguments of a binary function.
   flip = f: a: b: f b a;
 
+  # `seq x y' evaluates x, then returns y.  That is, it forces strict
+  # evaluation of its first argument.
+  seq = x: y: if x == null then y else y;
+
+  # Like `seq', but recurses into lists and attribute sets to force evaluation
+  # of all list elements/attributes.
+  deepSeq = x: y:
+    if builtins.isList x
+      then deepSeqList x y
+    else if builtins.isAttrs x
+      then deepSeqAttrs x y
+      else seq x y;
+
   # Pull in some builtins not included elsewhere.
   inherit (builtins)
     pathExists readFile isBool isFunction
-    isInt add sub lessThan
-    seq deepSeq genericClosure;
+    isInt add sub lessThan;
 
   # Return the Nixpkgs version number.
   nixpkgsVersion =
@@ -30,11 +47,7 @@ rec {
     readFile ../.version
     + (if pathExists suffixFile then readFile suffixFile else "pre-git");
 
-  # Whether we're being called by nix-shell.
+  # Whether we're being called by nix-shell.  This is useful to  
   inNixShell = builtins.getEnv "IN_NIX_SHELL" == "1";
 
-  # Return minimum/maximum of two numbers.
-  min = x: y: if x < y then x else y;
-  max = x: y: if x > y then x else y;
-
 }

lib/types.nix

@@ -6,7 +6,6 @@ with import ./attrsets.nix;
 with import ./options.nix;
 with import ./trivial.nix;
 with import ./strings.nix;
-with {inherit (import ./modules.nix) mergeDefinitions filterOverrides; };
 
 rec {
 
@@ -34,14 +33,9 @@ rec {
     , # Return a flat list of sub-options.  Used to generate
       # documentation.
       getSubOptions ? prefix: {}
-    , # List of modules if any, or null if none.
-      getSubModules ? null
-    , # Function for building the same option type  with a different list of
-      # modules.
-      substSubModules ? m: null
     }:
     { _type = "option-type";
-      inherit name check merge getSubOptions getSubModules substSubModules;
+      inherit name check merge getSubOptions;
     };
 
 
@@ -54,7 +48,7 @@ rec {
     bool = mkOptionType {
       name = "boolean";
       check = isBool;
-      merge = mergeEqualOption;
+      merge = loc: fold (x: y: x.value || y) false;
     };
 
     int = mkOptionType {
@@ -88,22 +82,20 @@ rec {
     attrs = mkOptionType {
       name = "attribute set";
       check = isAttrs;
-      merge = loc: foldl' (res: def: mergeAttrs res def.value) {};
+      merge = loc: fold (def: mergeAttrs def.value) {};
     };
 
     # derivation is a reserved keyword.
     package = mkOptionType {
       name = "derivation";
-      check = x: isDerivation x || isStorePath x;
-      merge = loc: defs:
-        let res = mergeOneOption loc defs;
-        in if isDerivation res then res else toDerivation res;
+      check = isDerivation;
+      merge = mergeOneOption;
     };
 
     path = mkOptionType {
       name = "path";
       # Hacky: there is no ‘isPath’ primop.
-      check = x: builtins.substring 0 1 (toString x) == "/";
+      check = x: builtins.unsafeDiscardStringContext (builtins.substring 0 1 (toString x)) == "/";
       merge = mergeOneOption;
     };
 
@@ -112,33 +104,23 @@ rec {
 
     listOf = elemType: mkOptionType {
       name = "list of ${elemType.name}s";
-      check = isList;
+      check = value: isList value && all elemType.check value;
       merge = loc: defs:
-        map (x: x.value) (filter (x: x ? value) (concatLists (imap (n: def: imap (m: def':
-            (mergeDefinitions
-              (loc ++ ["[definition ${toString n}-entry ${toString m}]"])
-              elemType
-              [{ inherit (def) file; value = def'; }]
-            ).optionalValue
-          ) def.value) defs)));
+        concatLists (imap (n: def: imap (m: def':
+          elemType.merge (loc ++ ["[${toString n}-${toString m}]"])
+            [{ inherit (def) file; value = def'; }]) def.value) defs);
       getSubOptions = prefix: elemType.getSubOptions (prefix ++ ["*"]);
-      getSubModules = elemType.getSubModules;
-      substSubModules = m: listOf (elemType.substSubModules m);
     };
 
     attrsOf = elemType: mkOptionType {
       name = "attribute set of ${elemType.name}s";
-      check = isAttrs;
+      check = x: isAttrs x && all elemType.check (attrValues x);
       merge = loc: defs:
-        mapAttrs (n: v: v.value) (filterAttrs (n: v: v ? value) (zipAttrsWith (name: defs:
-            (mergeDefinitions (loc ++ [name]) elemType defs).optionalValue
-          )
+        zipAttrsWith (name: elemType.merge (loc ++ [name]))
           # Push down position info.
           (map (def: listToAttrs (mapAttrsToList (n: def':
-            { name = n; value = { inherit (def) file; value = def'; }; }) def.value)) defs)));
+            { name = n; value = { inherit (def) file; value = def'; }; }) def.value)) defs);
       getSubOptions = prefix: elemType.getSubOptions (prefix ++ ["<name>"]);
-      getSubModules = elemType.getSubModules;
-      substSubModules = m: attrsOf (elemType.substSubModules m);
     };
 
     # List or attribute set of ...
@@ -159,36 +141,18 @@ rec {
         attrOnly = attrsOf elemType;
       in mkOptionType {
         name = "list or attribute set of ${elemType.name}s";
-        check = x: isList x || isAttrs x;
+        check = x:
+          if isList x       then listOnly.check x
+          else if isAttrs x then attrOnly.check x
+          else false;
         merge = loc: defs: attrOnly.merge loc (imap convertIfList defs);
         getSubOptions = prefix: elemType.getSubOptions (prefix ++ ["<name?>"]);
-        getSubModules = elemType.getSubModules;
-        substSubModules = m: loaOf (elemType.substSubModules m);
       };
 
-    # List or element of ...
-    loeOf = elemType: mkOptionType {
-      name = "element or list of ${elemType.name}s";
-      check = x: isList x || elemType.check x;
-      merge = loc: defs:
-        let
-          defs' = filterOverrides defs;
-          res = (head defs').value;
-        in
-        if isList res then concatLists (getValues defs')
-        else if lessThan 1 (length defs') then
-          throw "The option `${showOption loc}' is defined multiple times, in ${showFiles (getFiles defs)}."
-        else if !isString res then
-          throw "The option `${showOption loc}' does not have a string value, in ${showFiles (getFiles defs)}."
-        else res;
-    };
-
     uniq = elemType: mkOptionType {
       inherit (elemType) name check;
       merge = mergeOneOption;
       getSubOptions = elemType.getSubOptions;
-      getSubModules = elemType.getSubModules;
-      substSubModules = m: uniq (elemType.substSubModules m);
     };
 
     nullOr = elemType: mkOptionType {
@@ -201,8 +165,14 @@ rec {
           throw "The option `${showOption loc}' is defined both null and not null, in ${showFiles (getFiles defs)}."
         else elemType.merge loc defs;
       getSubOptions = elemType.getSubOptions;
-      getSubModules = elemType.getSubModules;
-      substSubModules = m: nullOr (elemType.substSubModules m);
+    };
+
+    functionTo = elemType: mkOptionType {
+      name = "function that evaluates to a(n) ${elemType.name}";
+      check = isFunction;
+      merge = loc: defs:
+        fnArgs: elemType.merge loc (map (fn: { inherit (fn) file; value = fn.value fnArgs; }) defs);
+      getSubOptions = elemType.getSubOptions;
     };
 
     submodule = opts:
@@ -217,17 +187,11 @@ rec {
           let
             coerce = def: if isFunction def then def else { config = def; };
             modules = opts' ++ map (def: { _file = def.file; imports = [(coerce def.value)]; }) defs;
-          in (evalModules {
-            inherit modules;
-            args.name = last loc;
-            prefix = loc;
-          }).config;
+          in (evalModules { inherit modules; args.name = last loc; prefix = loc; }).config;
         getSubOptions = prefix: (evalModules
           { modules = opts'; inherit prefix;
             # FIXME: hack to get shit to evaluate.
             args = { name = ""; }; }).options;
-        getSubModules = opts';
-        substSubModules = m: submodule m;
       };
 
     enum = values: mkOptionType {

maintainers/docker/.dockerignore

@@ -1,14 +0,0 @@
-*~
-,*
-.*.swp
-.*.swo
-result
-result-*
-/doc/NEWS.html
-/doc/NEWS.txt
-/doc/manual.html
-/doc/manual.pdf
-.version-suffix
-
-.DS_Store
-.git

maintainers/docker/Dockerfile

@@ -1,12 +0,0 @@
-FROM busybox
-
-RUN dir=`mktemp -d` && trap 'rm -rf "$dir"' EXIT && \
-    wget -O- https://nixos.org/releases/nix/nix-1.7/nix-1.7-x86_64-linux.tar.bz2  | bzcat | tar x -C $dir && \
-    mkdir -m 0755 /nix && USER=root sh $dir/*/install && \
-    echo ". /root/.nix-profile/etc/profile.d/nix.sh" >> /etc/profile
-
-ADD . /root/nix/nixpkgs
-ONBUILD ENV NIX_PATH nixpkgs=/root/nix/nixpkgs:nixos=/root/nix/nixpkgs/nixos
-ONBUILD ENV PATH /root/.nix-profile/bin:/root/.nix-profile/sbin:/bin:/sbin:/usr/bin:/usr/sbin
-ONBUILD ENV ENV /etc/profile
-ENV ENV /etc/profile

maintainers/scripts/gnome-latest.sh

@@ -0,0 +1,95 @@
+#!/bin/sh
+
+GNOME_FTP="ftp.gnome.org/pub/GNOME/sources"
+
+project=$1
+
+if [ "$project" == "--help" ]; then
+  echo "Usage: $0 project [major.minor]"
+  exit 0
+fi
+
+baseVersion=$2
+
+if [ -z "$project" ]; then
+  echo "No project specified, exiting"
+  exit 1
+fi
+
+# curl -l ftp://... doesn't work from my office in HSE, and I don't want to have
+# any conversations with sysadmin. Somehow lftp works.
+if [ "$FTP_CLIENT" = "lftp" ]; then
+  ls_ftp() {
+    lftp -c "open $1; cls"
+  }
+else
+  ls_ftp() {
+    curl -l "$1"/
+  }
+fi
+
+if [ -z "$baseVersion" ]; then
+  echo "Looking for available versions..." >&2
+  available_baseversions=( `ls_ftp ftp://${GNOME_FTP}/${project} | grep '[0-9]\.[0-9]' | sort -t. -k1,1n -k 2,2n` )
+  echo -e "The following versions are available:\n ${available_baseversions[@]}" >&2
+  echo -en "Choose one of them: " >&2
+  read baseVersion
+fi
+
+FTPDIR="${GNOME_FTP}/${project}/${baseVersion}"
+
+#version=`curl -l ${FTPDIR}/ 2>/dev/null | grep LATEST-IS | sed -e s/LATEST-IS-//`
+# gnome's LATEST-IS is broken. Do not trust it.
+
+files=$(ls_ftp "${FTPDIR}")
+declare -A versions
+
+for f in $files; do
+  case $f in
+    (LATEST-IS-*|*.news|*.changes|*.sha256sum|*.diff*):
+      ;;
+    ($project-*.*.9*.tar.*):
+      tmp=${f#$project-}
+      tmp=${tmp%.tar*}
+      echo "Ignored unstable version ${tmp}" >&2
+      ;;
+    ($project-*.tar.*):
+      tmp=${f#$project-}
+      tmp=${tmp%.tar*}
+      versions[${tmp}]=1
+      ;;
+    (*):
+      echo "UNKNOWN FILE $f"
+      ;;
+  esac
+done
+echo "Found versions ${!versions[@]}" >&2
+version=`echo ${!versions[@]} | sed -e 's/ /\n/g' | sort -t. -k1,1n -k 2,2n -k 3,3n | tail -n1`
+echo "Latest version is: ${version}" >&2
+
+name=${project}-${version}
+echo "Fetching .sha256 file" >&2
+curl -O http://${FTPDIR}/${name}.sha256sum
+
+extensions=( "xz" "bz2" "gz" )
+echo "Choosing archive extension (known are ${extensions[@]})..." >&2
+for ext in ${extensions[@]}; do
+  if grep "\\.tar\\.${ext}$" ${name}.sha256sum >& /dev/null; then
+    ext_pref=$ext
+    sha256=$(grep "\\.tar\\.${ext}$" ${name}.sha256sum | cut -f1 -d\ )
+    break
+  fi
+done
+sha256=`nix-hash --to-base32 --type sha256 $sha256`
+echo "Chosen ${ext_pref}, hash is ${sha256}" >&2
+
+cat <<EOF
+  name = "${project}-${version}";
+
+  src = fetchurl {
+    url = mirror://gnome/sources/${project}/${baseVersion}/${project}-${version}.tar.${ext_pref};
+    sha256 = "${sha256}";
+  };
+EOF
+
+rm -v ${name}.sha256sum >&2

maintainers/scripts/gnome.sh

@@ -1,138 +0,0 @@
-#!/usr/bin/env bash
-
-set -o pipefail
-
-GNOME_FTP="ftp.gnome.org/pub/GNOME/sources"
-
-usage() {
-  echo "Usage: $0 show|update project [major.minor]" >&2
-  exit 0
-}
-
-if [ "$#" -lt 1 ]; then
-  usage
-fi
-
-action="$1"
-project="$2"
-majorVersion="$3"
-
-if [ "$action" != "show" ] && [ "$action" != "update" ]; then
-  echo "Unknown action $action" >&2
-  usage
-fi
-
-if [ -z "$project" ]; then
-  echo "No project specified, exiting"
-  exit 1
-fi
-
-# curl -l ftp://... doesn't work from my office in HSE, and I don't want to have
-# any conversations with sysadmin. Somehow lftp works.
-if [ "$FTP_CLIENT" = "lftp" ]; then
-  ls_ftp() {
-    lftp -c "open $1; cls"
-  }
-else
-  ls_ftp() {
-    curl -s -l "$1"/
-  }
-fi
-
-if [ -z "$majorVersion" ]; then
-  echo "Looking for available versions..." >&2
-  available_baseversions=( `ls_ftp ftp://${GNOME_FTP}/${project} | grep '[0-9]\.[0-9]' | sort -t. -k1,1n -k 2,2n` )
-  if [ "$?" -ne "0" ]; then
-    echo "Project $project not found" >&2
-    exit 1
-  fi
-  
-  echo -e "The following versions are available:\n ${available_baseversions[@]}" >&2
-  echo -en "Choose one of them: " >&2
-  read majorVersion
-fi
-
-if echo "$majorVersion" | grep -q "[0-9]\+\.[0-9]\+\.[0-9]\+"; then
-	# not a major version
-	version="$majorVersion"
-	majorVersion=$(echo "$majorVersion" | cut -d '.' -f 1,2)
-fi
-
-FTPDIR="${GNOME_FTP}/${project}/${majorVersion}"
-
-#version=`curl -l ${FTPDIR}/ 2>/dev/null | grep LATEST-IS | sed -e s/LATEST-IS-//`
-# gnome's LATEST-IS is broken. Do not trust it.
-
-if [ -z "$version" ]; then
-	files=$(ls_ftp "${FTPDIR}")
-	declare -A versions
-	
-	for f in $files; do
-		case $f in
-    (LATEST-IS-*|*.news|*.changes|*.sha256sum|*.diff*):
-		;;
-    ($project-*.*.9*.tar.*):
-		tmp=${f#$project-}
-		tmp=${tmp%.tar*}
-		echo "Ignored unstable version ${tmp}" >&2
-		;;
-    ($project-*.tar.*):
-		tmp=${f#$project-}
-		tmp=${tmp%.tar*}
-		versions[${tmp}]=1
-		;;
-    (*):
-		echo "UNKNOWN FILE $f"
-		;;
-		esac
-	done
-	echo "Found versions ${!versions[@]}" >&2
-	version=`echo ${!versions[@]} | sed -e 's/ /\n/g' | sort -t. -k1,1n -k 2,2n -k 3,3n | tail -n1`
-	echo "Latest version is: ${version}" >&2
-fi
-
-name=${project}-${version}
-echo "Fetching .sha256 file" >&2
-sha256out=$(curl -s -f http://${FTPDIR}/${name}.sha256sum)
-
-if [ "$?" -ne "0" ]; then
-	echo "Version not found" >&2
-	exit 1
-fi
-
-extensions=( "xz" "bz2" "gz" )
-echo "Choosing archive extension (known are ${extensions[@]})..." >&2
-for ext in ${extensions[@]}; do
-  if echo -e "$sha256out" | grep -q "\\.tar\\.${ext}$"; then
-    ext_pref=$ext
-    sha256=$(echo -e "$sha256out" | grep "\\.tar\\.${ext}$" | cut -f1 -d\ )
-    break
-  fi
-done
-echo "Chosen ${ext_pref}, hash is ${sha256}" >&2
-
-src="# Autogenerated by maintainers/scripts/gnome.sh update
-
-fetchurl: {
-  name = \"${project}-${version}\";
-
-  src = fetchurl {
-    url = mirror://gnome/sources/${project}/${majorVersion}/${project}-${version}.tar.${ext_pref};
-    sha256 = \"${sha256}\";
-  };
-}"
-
-if [ "$action" == "update" ]; then
-  # find project in nixpkgs tree
-  GNOME_TOP=$(readlink -e $(dirname "${BASH_SOURCE[0]}")"/../../pkgs/desktops/gnome-3/")
-  projectPath=$(find "$GNOME_TOP" -name "$project" -print)
-  if [ -z "$projectPath" ]; then
-    echo "Project $project not found under $GNOME_TOP"
-    exit 1
-  fi
-
-  echo "Updating $projectPath/src.nix"
-  echo -e "$src" > "$projectPath/src.nix"
-else
-  echo -e "\n$src"
-fi

maintainers/scripts/hydra_eval_check

@@ -6,7 +6,6 @@ hydra_eval_jobs \
   --argstr system i686-linux \
   --argstr system x86_64-darwin \
   --argstr system i686-cygwin \
-  --argstr system x86_64-cygwin \
   --argstr system i686-freebsd \
   --arg officialRelease false \
   --arg nixpkgs "{ outPath = builtins.storePath ./. ; rev = 1234; }" \

maintainers/scripts/nix-generate-from-cpan.nix

@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "nix-generate-from-cpan-1";
 
-  buildInputs = [ makeWrapper perl perlPackages.YAMLLibYAML perlPackages.JSON perlPackages.CPANPLUS ];
+  buildInputs = [ makeWrapper perl perlPackages.YAMLLibYAML perlPackages.JSON ];
 
   unpackPhase = "true";
   buildPhase = "true";
@@ -19,4 +19,4 @@ stdenv.mkDerivation {
     maintainers = [ stdenv.lib.maintainers.eelco ];
     description = "Utility to generate a Nix expression for a Perl package from CPAN";
   };
-}
+}

maintainers/scripts/nix-generate-from-cpan.pl

@@ -100,7 +100,7 @@ sub get_deps {
     foreach my $n (keys %{$deps}) {
         next if $n eq "perl";
         # Hacky way to figure out if this module is part of Perl.
-        if ($n !~ /^JSON/ && $n !~ /^YAML/ && $n !~ /^Module::Pluggable/) {
+        if ($n !~ /^JSON/ && $n !~ /^YAML/) {
             eval "use $n;";
             if (!$@) {
                 print STDERR "skipping Perl-builtin module $n\n";

maintainers/scripts/patchelf-hints.sh

@@ -62,7 +62,7 @@ for bin in $(find $binaryDist -executable -type f) :; do
         )
 
         if test "$names" = "glibc"; then names="stdenv.glibc"; fi
-        if echo $names | grep -c "gcc" &> /dev/null; then names="stdenv.cc.cc"; fi
+        if echo $names | grep -c "gcc" &> /dev/null; then names="stdenv.gcc.gcc"; fi
 
         if test $lib != $libPath; then
             interpreter="--interpreter \${$names}/lib/$lib"

maintainers/scripts/sort-attrs.str

@@ -0,0 +1,146 @@
+/* Tool to sort attribute sets.  Primarily useful for keeping
+   all-packages.nix tidy.
+
+   To compile:
+
+   $ strc -i ../../maintainers/scripts/sort-attrs.str -la stratego-lib
+
+   Typical invocation:
+   
+   $ sglr -m -p ~/Dev/nix/src/libexpr/nix.tbl -i all-packages.nix \
+     | implode-asfix --lex \
+     | ../../maintainers/scripts/sort-attrs \
+     | asfix-yield
+*/
+     
+module sort-attrs
+
+imports
+  libstratego-lib
+  libstratego-sglr
+
+
+strategies
+
+  no-wsp = !appl(prod([], cf(opt(layout())), no-attrs()), [])
+
+
+rules
+
+  list-sep(s): [] -> []
+  list-sep(s): [x | xs] -> [[x | before] | <list-sep(s)> [split | after]]
+    where
+      <split-fetch-keep(s)> xs => (before, split, after)
+  list-sep(s): [x | xs] -> [[x | xs]]
+    where
+      <not(split-fetch-keep(s))> xs
+
+  list-sep-end(s): xs -> [<conc> (before, [split]) | <list-sep-end(s)> after]
+    where
+      <split-fetch-keep(s)> xs => (before, split, after)
+  list-sep-end(s): xs -> [xs]
+    where
+      <not(split-fetch-keep(s))> xs
+  
+
+  sort-attrs:
+    appl(p@prod(_, _, attrs([term(cons("Attrs"))])),
+      [ lit("{")
+      , ws1
+      , appl(p2@list(cf(iter-star(sort("Bind")))), attrs)
+      , ws2
+      , lit("}")
+      ]
+    ) ->
+    appl(p, [lit("{"), <no-wsp>, appl(p2, <concat> attrs'), ws2, lit("}")])
+    where
+      <debug> "found it";
+      <attach-wsp> [ws1 | attrs] => withWSP;
+      <list-sep(starts-section)> withWSP => groups;
+      <length; debug> groups;
+      <map({x', x'', x''', xs', starts, starts': \[x | xs] -> [x''' | xs']
+        where
+          <remove-section-start> x => (x', starts);
+          <map(regularise-empty-lines); if !starts; debug; sortable-section; debug then qsort(compare-attrs) else id end> [x' | xs] => [x'' | xs'];
+          <[] <+ \x -> ["\n\n\n" | x]\ > starts => starts';
+          <prepend-layout> (starts', x'') => x'''
+      \ })> groups => attrs';
+      <debug> "did it"
+
+
+  attach-wsp: [a, b | cs] -> [(a, b) | <attach-wsp> cs]
+  attach-wsp: [] -> []
+
+
+strategies
+
+  starts-section =
+    ?x@(appl(prod([cf(layout())], cf(opt(layout())), no-attrs()), cs), attr);
+    <implode-string; is-substring(!"###")> cs;
+    !x
+
+rules
+
+    
+  sortable-section = ?[s]; !s; explode-string; not(fetch({x: ?x; !(x, 97); geq}))
+
+
+  remove-section-start:
+    (appl(prod([cf(layout())], cf(opt(layout())), no-attrs()), cs), attr) ->
+    ((appl(prod([cf(layout())], cf(opt(layout())), no-attrs()), cs'), attr), starts)
+    where
+      !cs;
+      list-sep-end(?10); // separate into lines, keeping the \n
+      map(implode-string);
+      partition(where(is-substring(!"###"))) => (starts, rest);
+      <map(explode-string); concat> rest => cs'
+
+
+  regularise-empty-lines:
+    (appl(prod([cf(layout())], cf(opt(layout())), no-attrs()), cs), attr) ->
+    (appl(prod([cf(layout())], cf(opt(layout())), no-attrs()), cs''), attr)
+    where
+      // separate into lines, keeping the \n
+      // last whitespace is significant, keep
+      <list-sep-end(?10); split-init-last> cs => (init, last);
+      <regularise-empty-lines'> init => cs'; // remove whitespace-only lines
+      <concat> [<explode-string> "\n\n", <concat> cs', last] => cs'' // add one empty line
+      
+  /* Dirty hack: *do* keep the first empty line following a non-empty line. !!! order matters */
+  regularise-empty-lines': [] -> []
+      
+  regularise-empty-lines': [x, y | xs] -> [x, y | <regularise-empty-lines'> xs]
+    where
+      <fetch-elem(not(?10 <+ ?32))> x;
+      <not(fetch-elem(not(?10 <+ ?32)))> y
+      
+  regularise-empty-lines': [x | xs] -> [x | <regularise-empty-lines'> xs]
+    where <fetch-elem(not(?10 <+ ?32))> x
+      
+  regularise-empty-lines': [x | xs] -> <regularise-empty-lines'> xs
+    where <not(fetch-elem(not(?10 <+ ?32)))> x
+      
+
+  prepend-layout:
+    (text, (appl(prod([cf(layout())], cf(opt(layout())), no-attrs()), cs), attr)) ->
+    (appl(prod([cf(layout())], cf(opt(layout())), no-attrs()), cs''), attr)
+    where
+      <implode-string> cs => cs';
+      <conc-strings; explode-string> (<concat-strings> text, cs') => cs''
+
+
+  compare-attrs:
+    x@
+    ( (_, appl(p1@prod(_, _, attrs([term(cons("Bind"))])), [id1 | xs1]))
+    , (_, appl(p2@prod(_, _, attrs([term(cons("Bind"))])), [id2 | xs2]))
+    )
+    -> x
+    where
+      <string-lt> (id1, id2)
+
+
+strategies
+
+  main = io-wrap(
+    oncetd(sort-attrs)
+  )

maintainers/scripts/travis-nox-review-pr.sh

@@ -28,21 +28,14 @@ elif [[ $1 == build ]]; then
     source $HOME/.nix-profile/etc/profile.d/nix.sh
 
     if [[ $TRAVIS_PULL_REQUEST == false ]]; then
-        echo "=== Not a pull request"
+        echo "===> Not a pull request, checking evaluation"
+        nix-build pkgs/top-level/release.nix -A tarball
     else
         echo "=== Checking PR"
-
-        if ! nox-review pr ${TRAVIS_PULL_REQUEST}; then
-            if sudo dmesg | egrep 'Out of memory|Killed process' > /tmp/oom-log; then
-                echo "=== The build failed due to running out of memory:"
-                cat /tmp/oom-log
-                echo "=== Please disregard the result of this Travis build."
-            fi
-            exit 1
-        fi
+        # The current HEAD is the PR merged into origin/master, so we compare
+        # against origin/master
+        nox-review wip --against origin/master
     fi
-    # echo "=== Checking tarball creation"
-    # nix-build pkgs/top-level/release.nix -A tarball
 else
     echo "$0: Unknown option $1" >&2
     false

maintainers/scripts/update-channel-branches.sh

@@ -1,112 +0,0 @@
-#!/bin/sh
-set -e
-
-: ${NIXOS_CHANNELS:=https://nixos.org/channels/}
-: ${CHANNELS_NAMESPACE:=refs/heads/channels/}
-
-# List all channels which are currently in the repository which we would
-# have to remove if they are not found again.
-deadChannels=$(git for-each-ref --format="%(refname)" "$CHANNELS_NAMESPACE")
-
-updateRef() {
-    local channelName=$1
-    local newRev=$2
-
-    # if the inputs are not valid, then we do not update any branch.
-    test -z "$newRev" -o -z "$channelName" && return;
-
-    # Update the local refs/heads/channels/* branches to be in-sync with the
-    # channel references.
-    local branch=$CHANNELS_NAMESPACE$channelName
-    oldRev=$(git rev-parse --short "$branch" 2>/dev/null || true)
-    if test "$oldRev" != "$newRev"; then
-        if git update-ref "$branch" "$newRev" 2>/dev/null; then
-            if test -z "$oldRev"; then
-                echo " * [new branch]      $newRev           -> ${branch#refs/heads/}"
-            else
-                echo "                     $oldRev..$newRev  -> ${branch#refs/heads/}"
-            fi
-        else
-            if test -z "$oldRev"; then
-                echo " * [missing rev]     $newRev           -> ${branch#refs/heads/}"
-            else
-                echo "   [missing rev]     $oldRev..$newRev  -> ${branch#refs/heads/}"
-            fi
-        fi
-    fi
-
-    # Filter out the current channel from the list of dead channels.
-    deadChannels=$(grep -v "$CHANNELS_NAMESPACE$channelName" <<EOF
-$deadChannels
-EOF
-) ||true
-}
-
-# Find the name of all channels which are listed in the directory.
-echo "Fetching channels from $NIXOS_CHANNELS:"
-for channelName in : $(curl -s "$NIXOS_CHANNELS" | sed -n '/folder/ { s,.*href=",,; s,/".*,,; p }'); do
-    test "$channelName" = : && continue;
-
-    # Do not follow redirections, such that we can extract the
-    # short-changeset from the name of the directory where we are
-    # redirected to.
-    sha1=$(curl -sI "$NIXOS_CHANNELS$channelName" | sed -n '/Location/ { s,.*\.\([a-f0-9]*\)[ \r]*$,\1,; p; }')
-
-    updateRef "remotes/$channelName" "$sha1"
-done
-
-echo "Fetching channels from nixos-version:"
-if currentSystem=$(nixos-version 2>/dev/null); then
-    # If the system is entirely build from a custom nixpkgs version,
-    # then the version is not annotated in git version. This sed
-    # expression is basically matching that the expressions end with
-    # ".<sha1> (Name)" to extract the sha1.
-    sha1=$(echo "$currentSystem" | sed -n 's,^.*\.\([a-f0-9]*\) *(.*)$,\1,; T skip; p; :skip;')
-
-    updateRef current-system "$sha1"
-fi
-
-echo "Fetching channels from $HOME/.nix-defexpr:"
-for revFile in : $(find -L "$HOME/.nix-defexpr/" -maxdepth 4 -name svn-revision); do
-    test "$revFile" = : && continue;
-
-    # Deconstruct a path such as, into:
-    #
-    #   /home/luke/.nix-defexpr/channels_root/nixos/nixpkgs/svn-revision
-    #     channelName = root/nixos
-    #
-    #   /home/luke/.nix-defexpr/channels/nixpkgs/svn-revision
-    #     channelName = nixpkgs
-    #
-    user=${revFile#*.nix-defexpr/channels}
-    repo=${user#*/}
-    repo=${repo%%/*}
-    user=${user%%/*}
-    user=${user#_}
-    test -z "$user" && user=$USER
-    channelName="$user${user:+/}$repo"
-
-    sha1=$(sed -n 's,^.*\.\([a-f0-9]*\)$,\1,; T skip; p; :skip;' "$revFile")
-
-    updateRef "$channelName" "$sha1"
-done
-
-# Suggest to remove channel branches which are no longer found by this
-# script. This is to handle the cases where a local/remote channel
-# disappear. We should not attempt to remove manually any branches, as they
-# might be user branches.
-if test -n "$deadChannels"; then
-
-    echo "
-Some old channel branches are still in your repository, if you
-want to remove them, run the following command(s):
-"
-
-    while read branch; do
-        echo "    git update-ref -d $branch"
-    done <<EOF
-$deadChannels
-EOF
-
-    echo
-fi

maintainers/scripts/vanity-manual-equalities.txt

@@ -1,7 +0,0 @@
-viric	viriketo@gmail.com
-Pjotr Prins	pjotr.public01@thebird.nl
-Pjotr Prins	pjotr.public05@thebird.nl
-Wouter den Breejen	wbreejen
-MarcWeber	marcweber
-Ricardo Correia	Ricardo M. Correia
-ertesx@gmx.de	ertes

maintainers/scripts/vanity.sh

@@ -1,122 +0,0 @@
-#! /bin/sh
-
-export LANG=C LC_ALL=C LC_COLLATE=C
-
-# Load git log
-raw_git_log="$(git log)"
-git_data="$(echo "$raw_git_log" | grep 'Author:' |
-  sed -e 's/^ *Author://; s/\\//g; s/^ *//; s/ *$//;
-  s/ @ .*//; s/ *[<]/\t/; s/[>]//')"
-
-# Name - nick - email correspondence from log and from maintainer list
-# Also there are a few manual entries
-maintainers="$(cat "$(dirname "$0")/../../lib/maintainers.nix" |
-  grep '=' | sed -re 's/\\"/''/g;
-  s/ *([^ =]*) *= *" *(.*[^ ]) *[<](.*)[>] *".*/\1\t\2\t\3/')"
-git_lines="$( ( echo "$git_data";
-    cat "$(dirname "$0")/vanity-manual-equalities.txt") | sort |uniq)"
-
-emails="$(
-    ( echo "$maintainers" | cut -f 3; echo "$git_data" | cut -f 2 ) |
-    sort | uniq | grep -E ".+@.+[.].+"
-    )"
-
-fetchGithubName () {
-    commitid="$(
-        echo "$raw_git_log" | grep -B3 "Author: .*[<]$1[>]" | head -n 3 |
-            grep '^commit ' | tail -n 1 | sed -e 's/^commit //'
-    )"
-    userid="$(
-        curl https://github.com/NixOS/nixpkgs/commit/"$commitid" 2>/dev/null |
-        grep authored -B10 | grep 'href="/' |
-        sed -re 's@.* href="/@@; s@".*@@' |
-	grep -v "/commit/"
-    )";
-    echo "$userid"
-}
-
-[ -n "$NIXPKGS_GITHUB_NAME_CACHE" ] && {
-    echo "$emails" | while read email; do
-        line="$(grep "$email	" "$NIXPKGS_GITHUB_NAME_CACHE")"
-	[ -z "$line" ] && {
-            echo "$email	$(fetchGithubName "$email")" >> \
-                "$NIXPKGS_GITHUB_NAME_CACHE"
-        }
-    done
-}
-
-# For RDF
-normalize_name () {
-	sed -e 's/%/%25/g; s/ /%20/g; s/'\''/%27/g; s/"/%22/g; s/`/%60/g; s/\^/%5e/g; '
-}
-
-denormalize_name () {
-	sed -e 's/%20/ /g; s/%27/'\''/g; s/%22/"/g; s/%60/`/g; s/%5e/^/g; s/%25/%/g;';
-}
-
-n3="$(mktemp --suffix .n3)"
-
-# «The same person» relation and a sorting hint
-# Full name is something with a space
-(
-echo "$git_lines" | sed -re 's@(.*)\t(.*)@<my://name/\1>	<my://can-be>	<my://name/\2>.@'
-echo "$git_lines" | sed -re 's@(.*)\t(.*)@<my://name/\2>	<my://can-be>	<my://name/\1>.@'
-echo "$maintainers" | sed -re 's@(.*)\t(.*)\t(.*)@<my://name/\1>	<my://can-be>	<my://name/\2>.@'
-echo "$maintainers" | sed -re 's@(.*)\t(.*)\t(.*)@<my://name/\2>	<my://can-be>	<my://name/\3>.@'
-echo "$maintainers" | sed -re 's@(.*)\t(.*)\t(.*)@<my://name/\3>	<my://can-be>	<my://name/\1>.@'
-echo "$git_lines" | grep ' ' | cut -f 1 | sed -e 's@.*@<my://name/&>	<my://is-name>	<my://0>.@'
-echo "$git_lines" | grep -v ' ' | cut -f 1 | sed -e 's@.*@<my://name/&>	<my://is-name>	<my://1>.@'
-echo "$maintainers" | cut -f 2 | sed -e 's@.*@<my://name/&>	<my://is-name>	<my://0>.@'
-[ -n "$NIXPKGS_GITHUB_NAME_CACHE" ] && cat "$NIXPKGS_GITHUB_NAME_CACHE" |
-    grep -v "	$" |
-    sed -re 's@(.*)\t(.*)@<my://name/\1>	<my://at-github>	<my://github/\2>.@'
-) | normalize_name | grep -E '<my://[-a-z]+>' | sort | uniq > "$n3"
-
-# Get transitive closure
-sparql="$(nix-build '<nixpkgs>' -Q -A apache-jena --no-out-link)/bin/sparql"
-name_list="$(
-	"$sparql" --results=TSV --data="$n3" "
-	select ?x ?y ?g where {
-	  ?x <my://can-be>+ ?y.
-	  ?x <my://is-name> ?g.
-        }
-	" | tail -n +2 |
-	sed -re 's@<my://name/@@g; s@<my://@@g; s@>@@g;' |
-	sort -k 2,3 -t '	'
-)"
-github_name_list="$(
-	"$sparql" --results=TSV --data="$n3" "
-	select ?x ?y where {
-	  ?x (<my://can-be>+ / <my://at-github>) ?y.
-        }
-	" | tail -n +2 |
-	sed -re 's@<my://(name|github)/@@g; s@<my://@@g; s@>@@g;'
-)"
-
-# Take first spelling option for every person
-name_list_canonical="$(echo "$name_list" | cut -f 1,2 | uniq -f1)"
-
-cleaner_script="$(echo "$name_list_canonical" | denormalize_name |
-  sed -re 's/(.*)\t(.*)/s#^\2$#\1#g/g')"
-
-# Add github usernames
-if [ -n "$NIXPKGS_GITHUB_NAME_CACHE" ]; then
-    github_adder_script="$(echo "$github_name_list" |
-        grep -E "$(echo "$name_list_canonical" | cut -f 2 |
-	    tr '\n' '|' )" |
-	sort | uniq |
-        sed -re 's/(.*)\t(.*)/s| \1$| \1\t\2|g;/' |
-	denormalize_name
-	)"
-else
-    github_adder_script=''
-fi
-
-echo "$name_list" | denormalize_name
-
-echo
-
-echo "$git_data" | cut -f 1 |
-    sed -e "$cleaner_script" |
-    sort | uniq -c | sort -k1n | sed -re "$github_adder_script" |
-    sed -re 's/^ *([0-9]+) /\1\t/'

nixos/doc/config-examples/basic.nix

@@ -0,0 +1,21 @@
+{
+  boot = {
+    loader.grub.device = "/dev/sda";
+  };
+
+  fileSystems = [
+    { mountPoint = "/";
+      device = "/dev/sda1";
+    }
+  ];
+
+  swapDevices = [
+    { device = "/dev/sdb1"; }
+  ];
+
+  services = {
+    openssh = {
+      enable = true;
+    };
+  };
+}

nixos/doc/config-examples/closed-install-configuration.nix

@@ -0,0 +1,32 @@
+{
+  boot = {
+    loader.grub.device = "/dev/sda";
+    copyKernels = true;
+    bootMount = "(hd0,0)";
+  };
+
+  fileSystems = [
+    { mountPoint = "/";
+      device = "/dev/sda3";
+    }
+    { mountPoint = "/boot";
+      device = "/dev/sda1";
+      neededForBoot = true;
+    }
+  ];
+
+  swapDevices = [
+    { device = "/dev/sda2"; }
+  ];
+
+  services = {
+    sshd = {
+      enable = true;
+    };
+  };
+
+  fonts = {
+    enableFontConfig = false;
+  };
+
+}

nixos/doc/config-examples/root-on-lvm.nix

@@ -0,0 +1,27 @@
+# This configuration has / on a LVM volume.  Since Grub
+# doesn't know about LVM, a separate /boot is therefore
+# needed.
+#
+# In this example, labels are used for file systems and
+# swap devices: "boot" might be /dev/sda1, "root" might be
+# /dev/my-volume-group/root, and "swap" might be /dev/sda2.
+# In particular there is no specific reference to the fact
+# that / is on LVM; that's figured out automatically.
+
+{
+  boot.loader.grub.device = "/dev/sda";
+  boot.initrd.kernelModules = ["ata_piix"];
+
+  fileSystems = [
+    { mountPoint = "/";
+      label = "root";
+    }
+    { mountPoint = "/boot";
+      label = "boot";
+    }
+  ];
+
+  swapDevices = [
+    { label = "swap"; }
+  ];
+}

nixos/doc/config-examples/svn-server.nix

@@ -0,0 +1,36 @@
+{
+  boot = {
+    loader.grub.device = "/dev/sda";
+  };
+
+  fileSystems = [
+    { mountPoint = "/";
+      device = "/dev/sda1";
+    }
+  ];
+
+  services = {
+
+    sshd = {
+      enable = true;
+    };
+
+    httpd = {
+      enable = true;
+      adminAddr = "admin@example.org";
+
+      subservices = {
+
+        subversion = {
+          enable = true;
+          dataDir = "/data/subversion";
+          notificationSender = "svn@example.org";
+        };
+
+      };
+
+    };
+
+  };
+
+}

nixos/doc/config-examples/x86_64-usbstick.nix

@@ -0,0 +1,20 @@
+# Configuration file used to install NixOS-x86_64 on a USB stick.
+
+{
+  boot = {
+    loader.grub.device = "/dev/sda";
+    initrd = {
+      kernelModules = ["usb_storage" "ehci_hcd" "ohci_hcd"];
+    };
+  };
+
+  fileSystems = [
+    { mountPoint = "/";
+      label = "nixos-usb";
+    }
+  ];
+
+  fonts = {
+    enableFontConfig = false;
+  };
+}

nixos/doc/manual/README

@@ -1,12 +0,0 @@
-To build the manual, you need Nix installed on your system (no need
-for NixOS). To install Nix, follow the instructions at
-
-    https://nixos.org/nix/download.html
-
-When you have Nix on your system, in the root directory of the project
-(i.e., `nixpkgs`), run:
-
-    nix-build nixos/release.nix -A manual.x86_64-linux
-
-When this command successfully finishes, it will tell you where the
-manual got generated.

nixos/doc/manual/administration/boot-problems.xml

@@ -1,65 +0,0 @@
-<section xmlns="http://docbook.org/ns/docbook"
-        xmlns:xlink="http://www.w3.org/1999/xlink"
-        xmlns:xi="http://www.w3.org/2001/XInclude"
-        version="5.0"
-        xml:id="sec-boot-problems">
-
-<title>Boot Problems</title>
-
-<para>If NixOS fails to boot, there are a number of kernel command
-line parameters that may help you to identify or fix the issue.  You
-can add these parameters in the GRUB boot menu by pressing “e” to
-modify the selected boot entry and editing the line starting with
-<literal>linux</literal>.  The following are some useful kernel command
-line parameters that are recognised by the NixOS boot scripts or by
-systemd:
-
-<variablelist>
-
-  <varlistentry><term><literal>boot.shell_on_fail</literal></term>
-    <listitem><para>Start a root shell if something goes wrong in
-    stage 1 of the boot process (the initial ramdisk).  This is
-    disabled by default because there is no authentication for the
-    root shell.</para></listitem>
-  </varlistentry>
-
-  <varlistentry><term><literal>boot.debug1</literal></term>
-    <listitem><para>Start an interactive shell in stage 1 before
-    anything useful has been done.  That is, no modules have been
-    loaded and no file systems have been mounted, except for
-    <filename>/proc</filename> and
-    <filename>/sys</filename>.</para></listitem>
-  </varlistentry>
-
-  <varlistentry><term><literal>boot.trace</literal></term>
-    <listitem><para>Print every shell command executed by the stage 1
-    and 2 boot scripts.</para></listitem>
-  </varlistentry>
-
-  <varlistentry><term><literal>single</literal></term>
-    <listitem><para>Boot into rescue mode (a.k.a. single user mode).
-    This will cause systemd to start nothing but the unit
-    <literal>rescue.target</literal>, which runs
-    <command>sulogin</command> to prompt for the root password and
-    start a root login shell.  Exiting the shell causes the system to
-    continue with the normal boot process.</para></listitem>
-  </varlistentry>
-
-  <varlistentry><term><literal>systemd.log_level=debug systemd.log_target=console</literal></term>
-    <listitem><para>Make systemd very verbose and send log messages to
-    the console instead of the journal.</para></listitem>
-  </varlistentry>
-
-</variablelist>
-
-For more parameters recognised by systemd, see
-<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>
-
-<para>If no login prompts or X11 login screens appear (e.g. due to
-hanging dependencies), you can press Alt+ArrowUp.  If you’re lucky,
-this will start rescue mode (described above).  (Also note that since
-most units have a 90-second timeout before systemd gives up on them,
-the <command>agetty</command> login prompts should appear eventually
-unless something is very wrong.)</para>
-
-</section>

nixos/doc/manual/administration/cleaning-store.xml

@@ -1,62 +0,0 @@
-<chapter xmlns="http://docbook.org/ns/docbook"
-        xmlns:xlink="http://www.w3.org/1999/xlink"
-        xmlns:xi="http://www.w3.org/2001/XInclude"
-        version="5.0"
-        xml:id="sec-nix-gc">
-
-<title>Cleaning the Nix Store</title>
-
-<para>Nix has a purely functional model, meaning that packages are
-never upgraded in place.  Instead new versions of packages end up in a
-different location in the Nix store (<filename>/nix/store</filename>).
-You should periodically run Nix’s <emphasis>garbage
-collector</emphasis> to remove old, unreferenced packages.  This is
-easy:
-
-<screen>
-$ nix-collect-garbage
-</screen>
-
-Alternatively, you can use a systemd unit that does the same in the
-background:
-
-<screen>
-$ systemctl start nix-gc.service
-</screen>
-
-You can tell NixOS in <filename>configuration.nix</filename> to run
-this unit automatically at certain points in time, for instance, every
-night at 03:15:
-
-<programlisting>
-nix.gc.automatic = true;
-nix.gc.dates = "03:15";
-</programlisting>
-
-</para>
-
-<para>The commands above do not remove garbage collector roots, such
-as old system configurations.  Thus they do not remove the ability to
-roll back to previous configurations.  The following command deletes
-old roots, removing the ability to roll back to them:
-<screen>
-$ nix-collect-garbage -d
-</screen>
-You can also do this for specific profiles, e.g.
-<screen>
-$ nix-env -p /nix/var/nix/profiles/per-user/eelco/profile --delete-generations old
-</screen>
-Note that NixOS system configurations are stored in the profile
-<filename>/nix/var/nix/profiles/system</filename>.</para>
-
-<para>Another way to reclaim disk space (often as much as 40% of the
-size of the Nix store) is to run Nix’s store optimiser, which seeks
-out identical files in the store and replaces them with hard links to
-a single copy.
-<screen>
-$ nix-store --optimise
-</screen>
-Since this command needs to read the entire Nix store, it can take
-quite a while to finish.</para>
-
-</chapter>

nixos/doc/manual/administration/container-networking.xml

@@ -1,50 +0,0 @@
-<section  xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink"
-          xmlns:xi="http://www.w3.org/2001/XInclude"
-          version="5.0"
-          xml:id="sec-container-networking">
-
-
-<title>Container Networking</title>
-
-<para>When you create a container using <literal>nixos-container
-create</literal>, it gets it own private IPv4 address in the range
-<literal>10.233.0.0/16</literal>. You can get the container’s IPv4
-address as follows:
-
-<screen>
-$ nixos-container show-ip foo
-10.233.4.2
-
-$ ping -c1 10.233.4.2
-64 bytes from 10.233.4.2: icmp_seq=1 ttl=64 time=0.106 ms
-</screen>
-
-</para>
-
-<para>Networking is implemented using a pair of virtual Ethernet
-devices. The network interface in the container is called
-<literal>eth0</literal>, while the matching interface in the host is
-called <literal>ve-<replaceable>container-name</replaceable></literal>
-(e.g., <literal>ve-foo</literal>).  The container has its own network
-namespace and the <literal>CAP_NET_ADMIN</literal> capability, so it
-can perform arbitrary network configuration such as setting up
-firewall rules, without affecting or having access to the host’s
-network.</para>
-
-<para>By default, containers cannot talk to the outside network. If
-you want that, you should set up Network Address Translation (NAT)
-rules on the host to rewrite container traffic to use your external
-IP address. This can be accomplished using the following configuration
-on the host:
-
-<programlisting>
-networking.nat.enable = true;
-networking.nat.internalInterfaces = ["ve-+"];
-networking.nat.externalInterface = "eth0";
-</programlisting>
-where <literal>eth0</literal> should be replaced with the desired
-external interface. Note that <literal>ve-+</literal> is a wildcard
-that matches all container interfaces.</para>
-
-</section>

nixos/doc/manual/administration/containers.xml

@@ -1,34 +0,0 @@
-<chapter xmlns="http://docbook.org/ns/docbook"
-        xmlns:xlink="http://www.w3.org/1999/xlink"
-        xmlns:xi="http://www.w3.org/2001/XInclude"
-        version="5.0"
-        xml:id="ch-containers">
-
-<title>Container Management</title>
-
-<para>NixOS allows you to easily run other NixOS instances as
-<emphasis>containers</emphasis>. Containers are a light-weight
-approach to virtualisation that runs software in the container at the
-same speed as in the host system. NixOS containers share the Nix store
-of the host, making container creation very efficient.</para>
-
-<warning><para>Currently, NixOS containers are not perfectly isolated
-from the host system. This means that a user with root access to the
-container can do things that affect the host. So you should not give
-container root access to untrusted users.</para></warning>
-
-<para>NixOS containers can be created in two ways: imperatively, using
-the command <command>nixos-container</command>, and declaratively, by
-specifying them in your <filename>configuration.nix</filename>. The
-declarative approach implies that containers get upgraded along with
-your host system when you run <command>nixos-rebuild</command>, which
-is often not what you want. By contrast, in the imperative approach,
-containers are configured and updated independently from the host
-system.</para>
-
-<xi:include href="imperative-containers.xml" />
-<xi:include href="declarative-containers.xml" />
-<xi:include href="container-networking.xml" />
-
-</chapter>
-

nixos/doc/manual/administration/control-groups.xml

@@ -1,73 +0,0 @@
-<chapter xmlns="http://docbook.org/ns/docbook"
-        xmlns:xlink="http://www.w3.org/1999/xlink"
-        xmlns:xi="http://www.w3.org/2001/XInclude"
-        version="5.0"
-        xml:id="sec-cgroups">
-
-<title>Control Groups</title>
-
-<para>To keep track of the processes in a running system, systemd uses
-<emphasis>control groups</emphasis> (cgroups).  A control group is a
-set of processes used to allocate resources such as CPU, memory or I/O
-bandwidth.  There can be multiple control group hierarchies, allowing
-each kind of resource to be managed independently.</para>
-
-<para>The command <command>systemd-cgls</command> lists all control
-groups in the <literal>systemd</literal> hierarchy, which is what
-systemd uses to keep track of the processes belonging to each service
-or user session:
-
-<screen>
-$ systemd-cgls
-├─user
-│ └─eelco
-│   └─c1
-│     ├─ 2567 -:0
-│     ├─ 2682 kdeinit4: kdeinit4 Running...
-│     ├─ <replaceable>...</replaceable>
-│     └─10851 sh -c less -R
-└─system
-  ├─httpd.service
-  │ ├─2444 httpd -f /nix/store/3pyacby5cpr55a03qwbnndizpciwq161-httpd.conf -DNO_DETACH
-  │ └─<replaceable>...</replaceable>
-  ├─dhcpcd.service
-  │ └─2376 dhcpcd --config /nix/store/f8dif8dsi2yaa70n03xir8r653776ka6-dhcpcd.conf
-  └─ <replaceable>...</replaceable>
-</screen>
-
-Similarly, <command>systemd-cgls cpu</command> shows the cgroups in
-the CPU hierarchy, which allows per-cgroup CPU scheduling priorities.
-By default, every systemd service gets its own CPU cgroup, while all
-user sessions are in the top-level CPU cgroup.  This ensures, for
-instance, that a thousand run-away processes in the
-<literal>httpd.service</literal> cgroup cannot starve the CPU for one
-process in the <literal>postgresql.service</literal> cgroup.  (By
-contrast, it they were in the same cgroup, then the PostgreSQL process
-would get 1/1001 of the cgroup’s CPU time.)  You can limit a service’s
-CPU share in <filename>configuration.nix</filename>:
-
-<programlisting>
-systemd.services.httpd.serviceConfig.CPUShares = 512;
-</programlisting>
-
-By default, every cgroup has 1024 CPU shares, so this will halve the
-CPU allocation of the <literal>httpd.service</literal> cgroup.</para>
-
-<para>There also is a <literal>memory</literal> hierarchy that
-controls memory allocation limits; by default, all processes are in
-the top-level cgroup, so any service or session can exhaust all
-available memory.  Per-cgroup memory limits can be specified in
-<filename>configuration.nix</filename>; for instance, to limit
-<literal>httpd.service</literal> to 512 MiB of RAM (excluding swap):
-
-<programlisting>
-systemd.services.httpd.serviceConfig.MemoryLimit = "512M";
-</programlisting>
-
-</para>
-
-<para>The command <command>systemd-cgtop</command> shows a
-continuously updated list of all cgroups with their CPU and memory
-usage.</para>
-
-</chapter>

nixos/doc/manual/administration/declarative-containers.xml

@@ -1,56 +0,0 @@
-<section  xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink"
-          xmlns:xi="http://www.w3.org/2001/XInclude"
-          version="5.0"
-          xml:id="sec-declarative-containers">
-
-<title>Declarative Container Specification</title>
-
-<para>You can also specify containers and their configuration in the
-host’s <filename>configuration.nix</filename>.  For example, the
-following specifies that there shall be a container named
-<literal>database</literal> running PostgreSQL:
-
-<programlisting>
-containers.database =
-  { config =
-      { config, pkgs, ... }:
-      { services.postgresql.enable = true;
-        services.postgresql.package = pkgs.postgresql92;
-      };
-  };
-</programlisting>
-
-If you run <literal>nixos-rebuild switch</literal>, the container will
-be built and started. If the container was already running, it will be
-updated in place, without rebooting.</para>
-
-<para>By default, declarative containers share the network namespace
-of the host, meaning that they can listen on (privileged)
-ports. However, they cannot change the network configuration. You can
-give a container its own network as follows:
-
-<programlisting>
-containers.database =
-  { privateNetwork = true;
-    hostAddress = "192.168.100.10";
-    localAddress = "192.168.100.11";
-  };
-</programlisting>
-
-This gives the container a private virtual Ethernet interface with IP
-address <literal>192.168.100.11</literal>, which is hooked up to a
-virtual Ethernet interface on the host with IP address
-<literal>192.168.100.10</literal>.  (See the next section for details
-on container networking.)</para>
-
-<para>To disable the container, just remove it from
-<filename>configuration.nix</filename> and run <literal>nixos-rebuild
-switch</literal>. Note that this will not delete the root directory of
-the container in <literal>/var/lib/containers</literal>.</para>
-
-<para>Declarative containers can be started and stopped using the
-corresponding systemd service, e.g. <literal>systemctl start
-container@database</literal>.</para>
-
-</section>

nixos/doc/manual/administration/imperative-containers.xml

@@ -1,124 +0,0 @@
-<section  xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink"
-          xmlns:xi="http://www.w3.org/2001/XInclude"
-          version="5.0"
-          xml:id="sec-imperative-containers">
-
-<title>Imperative Container Management</title>
-
-<para>We’ll cover imperative container management using
-<command>nixos-container</command> first. You create a container with
-identifier <literal>foo</literal> as follows:
-
-<screen>
-$ nixos-container create foo
-</screen>
-
-This creates the container’s root directory in
-<filename>/var/lib/containers/foo</filename> and a small configuration
-file in <filename>/etc/containers/foo.conf</filename>. It also builds
-the container’s initial system configuration and stores it in
-<filename>/nix/var/nix/profiles/per-container/foo/system</filename>. You
-can modify the initial configuration of the container on the command
-line. For instance, to create a container that has
-<command>sshd</command> running, with the given public key for
-<literal>root</literal>:
-
-<screen>
-$ nixos-container create foo --config 'services.openssh.enable = true; \
-  users.extraUsers.root.openssh.authorizedKeys.keys = ["ssh-dss AAAAB3N…"];'
-</screen>
-
-</para>
-
-<para>Creating a container does not start it. To start the container,
-run:
-
-<screen>
-$ nixos-container start foo
-</screen>
-
-This command will return as soon as the container has booted and has
-reached <literal>multi-user.target</literal>. On the host, the
-container runs within a systemd unit called
-<literal>container@<replaceable>container-name</replaceable>.service</literal>.
-Thus, if something went wrong, you can get status info using
-<command>systemctl</command>:
-
-<screen>
-$ systemctl status container@foo
-</screen>
-
-</para>
-
-<para>If the container has started succesfully, you can log in as
-root using the <command>root-login</command> operation:
-
-<screen>
-$ nixos-container root-login foo
-[root@foo:~]#
-</screen>
-
-Note that only root on the host can do this (since there is no
-authentication).  You can also get a regular login prompt using the
-<command>login</command> operation, which is available to all users on
-the host:
-
-<screen>
-$ nixos-container login foo
-foo login: alice
-Password: ***
-</screen>
-
-With <command>nixos-container run</command>, you can execute arbitrary
-commands in the container:
-
-<screen>
-$ nixos-container run foo -- uname -a
-Linux foo 3.4.82 #1-NixOS SMP Thu Mar 20 14:44:05 UTC 2014 x86_64 GNU/Linux
-</screen>
-
-</para>
-
-<para>There are several ways to change the configuration of the
-container. First, on the host, you can edit
-<literal>/var/lib/container/<replaceable>name</replaceable>/etc/nixos/configuration.nix</literal>,
-and run
-
-<screen>
-$ nixos-container update foo
-</screen>
-
-This will build and activate the new configuration. You can also
-specify a new configuration on the command line:
-
-<screen>
-$ nixos-container update foo --config 'services.httpd.enable = true; \
-  services.httpd.adminAddr = "foo@example.org";'
-
-$ curl http://$(nixos-container show-ip foo)/
-&lt;!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">…
-</screen>
-
-However, note that this will overwrite the container’s
-<filename>/etc/nixos/configuration.nix</filename>.</para>
-
-<para>Alternatively, you can change the configuration from within the
-container itself by running <command>nixos-rebuild switch</command>
-inside the container. Note that the container by default does not have
-a copy of the NixOS channel, so you should run <command>nix-channel
---update</command> first.</para>
-
-<para>Containers can be stopped and started using
-<literal>nixos-container stop</literal> and <literal>nixos-container
-start</literal>, respectively, or by using
-<command>systemctl</command> on the container’s service unit. To
-destroy a container, including its file system, do
-
-<screen>
-$ nixos-container destroy foo
-</screen>
-
-</para>
-
-</section>

nixos/doc/manual/administration/logging.xml

@@ -1,52 +0,0 @@
-<chapter xmlns="http://docbook.org/ns/docbook"
-        xmlns:xlink="http://www.w3.org/1999/xlink"
-        xmlns:xi="http://www.w3.org/2001/XInclude"
-        version="5.0"
-        xml:id="sec-logging">
-
-<title>Logging</title>
-
-<para>System-wide logging is provided by systemd’s
-<emphasis>journal</emphasis>, which subsumes traditional logging
-daemons such as syslogd and klogd.  Log entries are kept in binary
-files in <filename>/var/log/journal/</filename>.  The command
-<literal>journalctl</literal> allows you to see the contents of the
-journal.  For example,
-
-<screen>
-$ journalctl -b
-</screen>
-
-shows all journal entries since the last reboot.  (The output of
-<command>journalctl</command> is piped into <command>less</command> by
-default.)  You can use various options and match operators to restrict
-output to messages of interest.  For instance, to get all messages
-from PostgreSQL:
-
-<screen>
-$ journalctl -u postgresql.service
--- Logs begin at Mon, 2013-01-07 13:28:01 CET, end at Tue, 2013-01-08 01:09:57 CET. --
-...
-Jan 07 15:44:14 hagbard postgres[2681]: [2-1] LOG:  database system is shut down
--- Reboot --
-Jan 07 15:45:10 hagbard postgres[2532]: [1-1] LOG:  database system was shut down at 2013-01-07 15:44:14 CET
-Jan 07 15:45:13 hagbard postgres[2500]: [1-1] LOG:  database system is ready to accept connections
-</screen>
-
-Or to get all messages since the last reboot that have at least a
-“critical” severity level:
-
-<screen>
-$ journalctl -b -p crit
-Dec 17 21:08:06 mandark sudo[3673]: pam_unix(sudo:auth): auth could not identify password for [alice]
-Dec 29 01:30:22 mandark kernel[6131]: [1053513.909444] CPU6: Core temperature above threshold, cpu clock throttled (total events = 1)
-</screen>
-
-</para>
-
-<para>The system journal is readable by root and by users in the
-<literal>wheel</literal> and <literal>systemd-journal</literal>
-groups.  All users have a private journal that can be read using
-<command>journalctl</command>.</para>
-
-</chapter>

nixos/doc/manual/administration/maintenance-mode.xml

@@ -1,18 +0,0 @@
-<section xmlns="http://docbook.org/ns/docbook"
-        xmlns:xlink="http://www.w3.org/1999/xlink"
-        xmlns:xi="http://www.w3.org/2001/XInclude"
-        version="5.0"
-        xml:id="sec-maintenance-mode">
-
-<title>Maintenance Mode</title>
-
-<para>You can enter rescue mode by running:
-
-<screen>
-$ systemctl rescue</screen>
-
-This will eventually give you a single-user root shell.  Systemd will
-stop (almost) all system services.  To get out of maintenance mode,
-just exit from the rescue shell.</para>
-
-</section>

nixos/doc/manual/administration/network-problems.xml

@@ -1,33 +0,0 @@
-<section xmlns="http://docbook.org/ns/docbook"
-        xmlns:xlink="http://www.w3.org/1999/xlink"
-        xmlns:xi="http://www.w3.org/2001/XInclude"
-        version="5.0"
-        xml:id="sec-nix-network-issues">
-
-<title>Network Problems</title>
-
-<para>Nix uses a so-called <emphasis>binary cache</emphasis> to
-optimise building a package from source into downloading it as a
-pre-built binary.  That is, whenever a command like
-<command>nixos-rebuild</command> needs a path in the Nix store, Nix
-will try to download that path from the Internet rather than build it
-from source.  The default binary cache is
-<uri>https://cache.nixos.org/</uri>.  If this cache is unreachable,
-Nix operations may take a long time due to HTTP connection timeouts.
-You can disable the use of the binary cache by adding <option>--option
-use-binary-caches false</option>, e.g.
-
-<screen>
-$ nixos-rebuild switch --option use-binary-caches false
-</screen>
-
-If you have an alternative binary cache at your disposal, you can use
-it instead:
-
-<screen>
-$ nixos-rebuild switch --option binary-caches http://my-cache.example.org/
-</screen>
-
-</para>
-
-</section>

nixos/doc/manual/administration/rebooting.xml

@@ -1,44 +0,0 @@
-<chapter xmlns="http://docbook.org/ns/docbook"
-        xmlns:xlink="http://www.w3.org/1999/xlink"
-        xmlns:xi="http://www.w3.org/2001/XInclude"
-        version="5.0"
-        xml:id="sec-rebooting">
-
-<title>Rebooting and Shutting Down</title>
-
-<para>The system can be shut down (and automatically powered off) by
-doing:
-
-<screen>
-$ shutdown
-</screen>
-
-This is equivalent to running <command>systemctl
-poweroff</command>.</para>
-
-<para>To reboot the system, run
-
-<screen>
-$ reboot
-</screen>
-
-which is equivalent to <command>systemctl reboot</command>.
-Alternatively, you can quickly reboot the system using
-<literal>kexec</literal>, which bypasses the BIOS by directly loading
-the new kernel into memory:
-
-<screen>
-$ systemctl kexec
-</screen>
-
-</para>
-
-<para>The machine can be suspended to RAM (if supported) using
-<command>systemctl suspend</command>, and suspended to disk using
-<command>systemctl hibernate</command>.</para>
-
-<para>These commands can be run by any user who is logged in locally,
-i.e. on a virtual console or in X11; otherwise, the user is asked for
-authentication.</para>
-
-</chapter>

nixos/doc/manual/administration/rollback.xml

@@ -1,48 +0,0 @@
-<section xmlns="http://docbook.org/ns/docbook"
-        xmlns:xlink="http://www.w3.org/1999/xlink"
-        xmlns:xi="http://www.w3.org/2001/XInclude"
-        version="5.0"
-        xml:id="sec-rollback">
-
-<title>Rolling Back Configuration Changes</title>
-
-<para>After running <command>nixos-rebuild</command> to switch to a
-new configuration, you may find that the new configuration doesn’t
-work very well.  In that case, there are several ways to return to a
-previous configuration.</para>
-
-<para>First, the GRUB boot manager allows you to boot into any
-previous configuration that hasn’t been garbage-collected.  These
-configurations can be found under the GRUB submenu “NixOS - All
-configurations”.  This is especially useful if the new configuration
-fails to boot.  After the system has booted, you can make the selected
-configuration the default for subsequent boots:
-
-<screen>
-$ /run/current-system/bin/switch-to-configuration boot</screen>
-
-</para>
-
-<para>Second, you can switch to the previous configuration in a running
-system:
-
-<screen>
-$ nixos-rebuild switch --rollback</screen>
-
-This is equivalent to running:
-
-<screen>
-$ /nix/var/nix/profiles/system-<replaceable>N</replaceable>-link/bin/switch-to-configuration switch</screen>
-
-where <replaceable>N</replaceable> is the number of the NixOS system
-configuration.  To get a list of the available configurations, do:
-
-<screen>
-$ ls -l /nix/var/nix/profiles/system-*-link
-<replaceable>...</replaceable>
-lrwxrwxrwx 1 root root 78 Aug 12 13:54 /nix/var/nix/profiles/system-268-link -> /nix/store/202b...-nixos-13.07pre4932_5a676e4-4be1055
-</screen>
-
-</para>
-
-</section>

nixos/doc/manual/administration/running.xml

@@ -1,24 +0,0 @@
-<part xmlns="http://docbook.org/ns/docbook"
-      xmlns:xlink="http://www.w3.org/1999/xlink"
-      xmlns:xi="http://www.w3.org/2001/XInclude"
-      version="5.0"
-      xml:id="ch-running">
-
-<title>Administration</title>
-
-<partintro>
-<para>This chapter describes various aspects of managing a running
-NixOS system, such as how to use the <command>systemd</command>
-service manager.</para>
-</partintro>
-
-<xi:include href="service-mgmt.xml" />
-<xi:include href="rebooting.xml" />
-<xi:include href="user-sessions.xml" />
-<xi:include href="control-groups.xml" />
-<xi:include href="logging.xml" />
-<xi:include href="cleaning-store.xml" />
-<xi:include href="containers.xml" />
-<xi:include href="troubleshooting.xml" />
-
-</part>

nixos/doc/manual/administration/service-mgmt.xml

@@ -1,83 +0,0 @@
-<chapter xmlns="http://docbook.org/ns/docbook"
-         xmlns:xlink="http://www.w3.org/1999/xlink"
-         xmlns:xi="http://www.w3.org/2001/XInclude"
-         version="5.0"
-         xml:id="sec-systemctl">
-
-<title>Service Management</title>
-
-<para>In NixOS, all system services are started and monitored using
-the systemd program.  Systemd is the “init” process of the system
-(i.e. PID 1), the parent of all other processes.  It manages a set of
-so-called “units”, which can be things like system services
-(programs), but also mount points, swap files, devices, targets
-(groups of units) and more.  Units can have complex dependencies; for
-instance, one unit can require that another unit must be successfully
-started before the first unit can be started.  When the system boots,
-it starts a unit named <literal>default.target</literal>; the
-dependencies of this unit cause all system services to be started,
-file systems to be mounted, swap files to be activated, and so
-on.</para>
-
-<para>The command <command>systemctl</command> is the main way to
-interact with <command>systemd</command>.  Without any arguments, it
-shows the status of active units:
-
-<screen>
-$ systemctl
--.mount          loaded active mounted   /
-swapfile.swap    loaded active active    /swapfile
-sshd.service     loaded active running   SSH Daemon
-graphical.target loaded active active    Graphical Interface
-<replaceable>...</replaceable>
-</screen>
-
-</para>
-
-<para>You can ask for detailed status information about a unit, for
-instance, the PostgreSQL database service:
-
-<screen>
-$ systemctl status postgresql.service
-postgresql.service - PostgreSQL Server
-          Loaded: loaded (/nix/store/pn3q73mvh75gsrl8w7fdlfk3fq5qm5mw-unit/postgresql.service)
-          Active: active (running) since Mon, 2013-01-07 15:55:57 CET; 9h ago
-        Main PID: 2390 (postgres)
-          CGroup: name=systemd:/system/postgresql.service
-                  ├─2390 postgres
-                  ├─2418 postgres: writer process
-                  ├─2419 postgres: wal writer process
-                  ├─2420 postgres: autovacuum launcher process
-                  ├─2421 postgres: stats collector process
-                  └─2498 postgres: zabbix zabbix [local] idle
-
-Jan 07 15:55:55 hagbard postgres[2394]: [1-1] LOG:  database system was shut down at 2013-01-07 15:55:05 CET
-Jan 07 15:55:57 hagbard postgres[2390]: [1-1] LOG:  database system is ready to accept connections
-Jan 07 15:55:57 hagbard postgres[2420]: [1-1] LOG:  autovacuum launcher started
-Jan 07 15:55:57 hagbard systemd[1]: Started PostgreSQL Server.
-</screen>
-
-Note that this shows the status of the unit (active and running), all
-the processes belonging to the service, as well as the most recent log
-messages from the service.
-
-</para>
-
-<para>Units can be stopped, started or restarted:
-
-<screen>
-$ systemctl stop postgresql.service
-$ systemctl start postgresql.service
-$ systemctl restart postgresql.service
-</screen>
-
-These operations are synchronous: they wait until the service has
-finished starting or stopping (or has failed).  Starting a unit will
-cause the dependencies of that unit to be started as well (if
-necessary).</para>
-
-<!-- - cgroups: each service and user session is a cgroup
-
-- cgroup resource management -->
-
-</chapter>

nixos/doc/manual/administration/store-corruption.xml

@@ -1,37 +0,0 @@
-<section xmlns="http://docbook.org/ns/docbook"
-        xmlns:xlink="http://www.w3.org/1999/xlink"
-        xmlns:xi="http://www.w3.org/2001/XInclude"
-        version="5.0"
-        xml:id="sec-nix-store-corruption">
-
-<title>Nix Store Corruption</title>
-
-<para>After a system crash, it’s possible for files in the Nix store
-to become corrupted.  (For instance, the Ext4 file system has the
-tendency to replace un-synced files with zero bytes.)  NixOS tries
-hard to prevent this from happening: it performs a
-<command>sync</command> before switching to a new configuration, and
-Nix’s database is fully transactional.  If corruption still occurs,
-you may be able to fix it automatically.</para>
-
-<para>If the corruption is in a path in the closure of the NixOS
-system configuration, you can fix it by doing
-
-<screen>
-$ nixos-rebuild switch --repair
-</screen>
-
-This will cause Nix to check every path in the closure, and if its
-cryptographic hash differs from the hash recorded in Nix’s database,
-the path is rebuilt or redownloaded.</para>
-
-<para>You can also scan the entire Nix store for corrupt paths:
-
-<screen>
-$ nix-store --verify --check-contents --repair
-</screen>
-
-Any corrupt paths will be redownloaded if they’re available in a
-binary cache; otherwise, they cannot be repaired.</para>
-
-</section>

nixos/doc/manual/administration/troubleshooting.xml

@@ -1,18 +0,0 @@
-<chapter xmlns="http://docbook.org/ns/docbook"
-        xmlns:xlink="http://www.w3.org/1999/xlink"
-        xmlns:xi="http://www.w3.org/2001/XInclude"
-        version="5.0"
-        xml:id="ch-troubleshooting">
-
-<title>Troubleshooting</title>
-
-<para>This chapter describes solutions to common problems you might
-encounter when you manage your NixOS system.</para>
-
-<xi:include href="boot-problems.xml" />
-<xi:include href="maintenance-mode.xml" />
-<xi:include href="rollback.xml" />
-<xi:include href="store-corruption.xml" />
-<xi:include href="network-problems.xml" />
-
-</chapter>