import ((import <nixpkgs> {}).fetchFromGitHub {
    owner  = "NixOS";
    repo   = "nixpkgs";
    rev    = "2eeaa0ae55960832510643bc10f88f5d961c3b6a";
    sha256 = "1z2z3cws2czf0rfpzsl5fkbwm8fjjd1ayaikbm17wskqdmfbhraj";
})
