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

  qmk_firmware-modelf = final.qmk_firmware.overrideAttrs {
    version = "model_f_labs";

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