import (builtins.fetchTarball {
url = "https://github.com/NixOS/nixpkgs/archive/2c66a7a6e036971c4847cca424125f55b9eb0b0b.tar.gz";
sha256 = "sha256:00pdg5mkgqp81n4pfgigd840hvh3fwwkbipcba1p4ds3ffy3xir5";
}) {}