anchor.diff:          protocol = "tcp";
           user = "root";
           server = "${pkgs.tcp_wrappers}/sbin/tcpd";
  -        serverArgs = "${pkgs.heimdal}/sbin/kadmind";
  +        serverArgs = "${pkgs.heimdalFull}/sbin/kadmind";
         };
   
       systemd.services.kdc = {
  
positive.code: 
    inherit (lib) mkOption mkIf singleton;
  
    inherit (pkgs) heimdal;
  
    stateDir = "/var/heimdal";
  in
  
negative.code: 
    config = mkIf config.services.kerberos_server.enable {
  
      environment.systemPackages = [ heimdalFull ];
  
      services.xinetd.enable = true;
      services.xinetd.services = lib.singleton
  