nixpkgs/shell.nix at master · dominik-lukacs/nixpkgs

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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

# 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 ./.

{

system ? builtins.currentSystem,

nixpkgs ? null,

let

inherit (import ./ci { inherit nixpkgs system; }) pkgs fmt;

# For `nix-shell -A hello`

curPkgs = builtins.removeAttrs (import ./. { inherit system; }) [

# Although this is what anyone may expect from a `_type = "pkgs"`,

# this file is intended to produce a shell in the first place,

# and a `_type` tag could confuse some code.

"_type"

];

curPkgs

// pkgs.mkShellNoCC {

inputsFrom = [

fmt.shell

];

packages = with pkgs; [

# Helper to review Nixpkgs PRs

# See CONTRIBUTING.md

nixpkgs-review

# Command-line utility for working with GitHub

# Used by nixpkgs-review to fetch eval results

];

}