import (builtins.fetchTarball {
  url = "https://github.com/NixOS/nixpkgs/archive/2deb07f3ac4eeb5de1c12c4ba2911a2eb1f6ed61.tar.gz";
  sha256 = "0036sv1sc4ddf8mv8f8j9ifqzl3fhvsbri4z1kppn0f1zk6jv9yi";
}) {}