nixos/qmk: add keychron support

let

  cfg = config.hardware.keyboard.qmk;

  inherit (lib) mkEnableOption mkIf;

in

{

  options.hardware.keyboard.qmk = {

    enable = mkEnableOption "non-root access to the firmware of QMK keyboards";

    keychronSupport = mkEnableOption "udev rules for keychron QMK based keyboards";

  };

  config = mkIf cfg.enable {

    services.udev.packages = [ pkgs.qmk-udev-rules ];

    services.udev.packages = [

      pkgs.qmk-udev-rules

    ]

    ++ lib.optionals cfg.keychronSupport [ pkgs.keychron-udev-rules ];

    users.groups.plugdev = { };

  };

}