final: prev: {
  # qmk_firmware = prev.callPackage ../pkgs/qmk_firmware.nix {};

  qmk_firmware = prev.fetchFromGitHub {
    owner = "qmk";
    repo = "qmk_firmware";
    fetchSubmodules = true;
    rev = "0.30.5";
    hash = "sha256-TdStj8Hf5seH/5SMDqG7B3JLXHCvlL58AJlRqydaNJ0=";
  };

  qmk_firmware-modelf = prev.fetchFromGitHub {
    owner = "matthew-wolf-n4mtt";
    repo = "qmk_firmware";
    fetchSubmodules = true;
    rev = "93734d1";
    hash = "sha256-E5zVcfELcFTqJspAyQmnD2qGRzFw4Y48Ce5c9FHl7Bk=";
  };
}