nixpkgs/shell.nix

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# 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
{
system ? builtins.currentSystem,
}:
let
pinnedNixpkgs = builtins.fromJSON (builtins.readFile ci/pinned-nixpkgs.json);
nixpkgs = fetchTarball {
url = "https://github.com/NixOS/nixpkgs/archive/${pinnedNixpkgs.rev}.tar.gz";
sha256 = pinnedNixpkgs.sha256;
};
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
];
}