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

	config = lib.mkIf cfg.enable {
		virtualisation.libvirtd.enable = true;
		programs.virt-manager.enable   = true;

		# HACK: Fixes bug: https://www.reddit.com/r/NixOS/comments/1afbjiu/i_get_a_nonetype_error_when_trying_to_launch_a_vm/
		# May also need to run: `gsettings set org.gnome.desktop.interface cursor-theme "Adwaita"`
		environment.systemPackages = with pkgs; [
			# glib
			adwaita-icon-theme # default gnome cursors,
		];
	};
}