{ lib, pkgs, ... }:
{
  nixpkgs = lib.mkForce {
    derivation = ''
      with import <nixpkgs> {};
      pkgs.fetchFromGitHub {
        owner = "nixos";
        repo = "nixpkgs";
        rev = "${(lib.importJSON ../../../krebs/nixpkgs.json).rev}";
        sha256 = "${(lib.importJSON ../../../krebs/nixpkgs.json).sha256}";
      }
    '';
  };
}