anchor.diff:            -e 's|<standard_system_servicedirs/>|${systemServiceDirs}|' \
             -e 's|<includedir>system.d</includedir>|${systemIncludeDirs}|'
   
  -      cp ${dbus}/etc/dbus-1/session.conf $out/session.conf
  +      cp ${pkgs.dbus_daemon}/etc/dbus-1/session.conf $out/session.conf
         
         # Add the services and session.d directories to the session bus
         # search path.
  
positive.code: 
      security.setuidOwners = singleton
        { program = "dbus-daemon-launch-helper";
          source = "${dbus}/libexec/dbus-daemon-launch-helper";
          owner = "root";
          group = "messagebus";
          setuid = true;
  
negative.code: 
    config = mkIf cfg.enable {
  
      environment.systemPackages = [ pkgs.dbus_daemon pkgs.dbus_tools ];
  
      environment.etc = singleton
        { source = configDir;
  