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https://github.com/NixOS/nixpkgs.git
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f86bce2497
When instantiating a dev-shell for x86_64-darwin, we cannot use 26.11's pinned revision. Instead, we must use a revision that still supports x86_64-darwin. Print a warning when we need to use that revision, because it is likely there will be subtle formatting & linting differences vs CI.
82 lines
2.2 KiB
Nix
82 lines
2.2 KiB
Nix
# A shell to get tooling for Nixpkgs development
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#
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# Note: We intentionally don't use Flakes here,
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# because every time you change any file and do another `nix develop`,
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# it would create another copy of the entire ~500MB tree in the store.
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# See https://github.com/NixOS/nix/pull/6530 for the future
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#
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# Note: We use a pinned Nixpkgs so that the tools are readily available even
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# when making changes that would otherwise require a new build of those tools.
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# If you'd like to test out changes to the tools themselves, you can pass
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#
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# nix-shell --arg nixpkgs ./.
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#
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{
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system ? builtins.currentSystem,
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nixpkgs ? null,
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}:
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let
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version = builtins.readFile ./.version;
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# On 26.05 we need a CI-pinned Nixpkgs revision that supports x86_64-darwin.
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# TODO: remove after 26.05 support ends.
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nixpkgs' =
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if nixpkgs == null && system == "x86_64-darwin" && version == "26.05" then
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let
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pinned = (builtins.fromJSON (builtins.readFile ./ci/pinned.json)).pins;
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warn = builtins.warn or (import ./lib).warn;
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inherit (pinned."nixpkgs-26.05-darwin")
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url
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hash
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revision
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branch
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;
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withWarning = warn (toString [
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"The currently pinned Nixpkgs (${pinned.nixpkgs.revision}) does not support ${system},"
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"using revision (${revision}) from ${branch}."
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"You may experience some differences to CI."
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]);
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in
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withWarning fetchTarball {
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inherit url;
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sha256 = hash;
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}
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else
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nixpkgs;
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inherit
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(import ./ci {
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inherit system;
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nixpkgs = nixpkgs';
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})
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pkgs
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fmt
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;
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# For `nix-shell -A hello`
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curPkgs = removeAttrs (import ./. { inherit system; }) [
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# Although this is what anyone may expect from a `_type = "pkgs"`,
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# this file is intended to produce a shell in the first place,
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# and a `_type` tag could confuse some code.
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"_type"
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];
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in
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curPkgs
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// pkgs.mkShellNoCC {
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packages = [
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# Helper to review Nixpkgs PRs
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# See CONTRIBUTING.md
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pkgs.nixpkgs-reviewFull
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# Command-line utility for working with GitHub
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# Used by nixpkgs-review to fetch eval results
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pkgs.gh
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# treefmt wrapper
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fmt.pkg
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];
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}
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// {
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formatter = fmt.pkg;
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}
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