{
  lib,
  options,
  config,
  ...
}: {
  options.mods.xkb = {
    layout = lib.mkOption {
      default = "enIntUmlaut";
      example = "us";
      type = lib.types.str;
      description = "Your layout";
    };
    variant = lib.mkOption {
      default = "";
      example = "";
      type = lib.types.str;
      description = "Your variant";
    };
  };
  config = lib.optionalAttrs (options ? services.xserver) {
    # Configure keymap in X11
    services.xserver = {
      xkb.layout = "${config.mods.xkb.layout}";
      xkb.variant = "${config.mods.xkb.variant}";
    };
  };
}