nixos-config/modules/system/x-input.nix

{
  config,
  lib,
  ...
}: {
  options.myConfig.x-input.enable = lib.mkEnableOption "";

  config = lib.mkIf config.myConfig.x-input.enable {
    services.xserver = {
      enable = true;
      xkb = {
        layout = "de";
        variant = "nodeadkeys";
      };

      libinput = {
        enable = true;

        touchpad = {
          accelProfile = "adaptive";
          naturalScrolling = true;
          disableWhileTyping = true;
        };

        mouse.accelProfile = "flat";
      };
    };
  };
}