{
	config,
	lib,
	pkgs,
	...
}: let
	cfg = config.module.wayland;
in {
	options.module.wayland.enable = lib.mkEnableOption "the wayland.";

	config = {
		programs.xwayland.enable = true;
		environment = {
			systemPackages = with pkgs; [
				wl-clipboard # CLI clipboard support.
			];
			variables = {
				# Compatibility variables.
				ECORE_EVAS_ENGINE  = "wayland_egl";
				ELM_ENGINE         = "wayland_egl";
				GDK_BACKEND        = "wayland";
				MOZ_ENABLE_WAYLAND = "1";
				QT_QPA_PLATFORM    = "wayland-egl;wayland;xcb";
				QT_WAYLAND_DISABLE_WINDOWDECORATION = "1";
				SAL_USE_VCLPLUGIN = "gtk3";
				SDL_VIDEODRIVER   = "wayland";
				_JAVA_AWT_WM_NONREPARENTING = "1";
			};
		};
	};
}