tjh.dev
1# A shell to get tooling for Nixpkgs development
2#
3# Note: We intentionally don't use Flakes here,
4# because every time you change any file and do another `nix develop`,
5# it would create another copy of the entire ~500MB tree in the store.
6# See https://github.com/NixOS/nix/pull/6530 for the future
7{
8 system ? builtins.currentSystem,
9}:
10let
11 pinnedNixpkgs = builtins.fromJSON (builtins.readFile ci/pinned-nixpkgs.json);
12
13 nixpkgs = fetchTarball {
14 url = "https://github.com/NixOS/nixpkgs/archive/${pinnedNixpkgs.rev}.tar.gz";
15 sha256 = pinnedNixpkgs.sha256;
16 };
17
18 pkgs = import nixpkgs {
19 inherit system;
20 config = {};
21 overlays = [];
22 };
23in
24pkgs.mkShellNoCC {
25 packages = [
26 # The default formatter for Nix code
27 # https://github.com/NixOS/nixfmt
28 pkgs.nixfmt-rfc-style
29 ];
30}