{ ... }: {

  # Enable the KDE Plasma Desktop Environment.
  services.displayManager.sddm.enable = true;
  services.desktopManager.plasma6.enable = true;

  # Enable the X11 windowing system.
  # You can disable this if you're only using the Wayland session.
  services.xserver.enable = true;

  # Configure keymap in X11
  services.xserver.xkb = {
    layout = "us";
    variant = "";
  };
}