{ pkgs, config, lib, ... }: let cfg = config.my.roles.virtualisation; in { options.my.roles.virtualisation.enable = lib.mkEnableOption "Enable tools for virtualisation"; config = lib.mkIf (cfg.enable) { # TODO: Think if I ever need virtualisation virtualisation.libvirtd.enable = true; environment.systemPackages = with pkgs; [ qemu_full qemu-utils ]; }; }