nix/module/desktop/Wayland.nix

{ pkgs, ... }: {
	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";
		};
	};
}