anchor.diff:      };
     };
   
  +  virtualisation.virtualbox.host.enable = true;
  +
     environment.systemPackages = with pkgs; [
       alsaLib
       alsaTools
  
positive.code:   services = {
      dbus.packages = [ pkgs.blueman ];
      locate.enable = true;
      gnome3.gnome-keyring.enable = true;
  
      printing = {
        enable = true;
  
negative.code:   security = {
      apparmor.enable = true;
      sudo.enable = true;
      pam.services.lightdm.enableGnomeKeyring = true;
      polkit.extraConfig = ''
        // Allow wheel users to mount filesystems
        polkit.addRule(function(action, subject) {
  