nixpkgs/shell.nix
2024-08-29 22:42:20 +02:00

41 lines
1.2 KiB
Nix

# A shell to get tooling for Nixpkgs development
#
# Note: We intentionally don't use Flakes here,
# because every time you change any file and do another `nix develop`,
# it would create another copy of the entire ~500MB tree in the store.
# See https://github.com/NixOS/nix/pull/6530 for the future
#
# Note: We use a pinned Nixpkgs so that the tools are readily available even
# when making changes that would otherwise require a new build of those tools.
# If you'd like to test out changes to the tools themselves, you can pass
#
# nix-shell --arg nixpkgs ./.
#
let
pinnedNixpkgs = builtins.fromJSON (builtins.readFile ci/pinned-nixpkgs.json);
in
{
system ? builtins.currentSystem,
nixpkgs ? fetchTarball {
url = "https://github.com/NixOS/nixpkgs/archive/${pinnedNixpkgs.rev}.tar.gz";
sha256 = pinnedNixpkgs.sha256;
},
}:
let
pkgs = import nixpkgs {
inherit system;
config = { };
overlays = [ ];
};
in
pkgs.mkShellNoCC {
packages = with pkgs; [
# The default formatter for Nix code
# See https://github.com/NixOS/nixfmt
nixfmt-rfc-style
# Helper to review Nixpkgs PRs
# See CONTRIBUTING.md
nixpkgs-review
];
}