anchor.diff:  in
   stdenv.mkDerivation rec {
     pname = "ns-3";
  -  version = "32";
  +  version = "33";
   
     src = fetchFromGitLab {
       owner = "nsnam";
  
positive.code:     sha256 = "158yjhsrmslj1q4zcq5p16hv9i82qnxx714l7idicncn0wzrfx7k";
    };
  
    nativeBuildInputs = [ wafHook ];
  
    outputs = [ "out" ] ++ lib.optional pythonSupport "py";
  
  
negative.code:     license = licenses.gpl3;
      description = "A discrete time event network simulator";
      platforms = with platforms; unix;
      maintainers = with maintainers; [ teto rgrunbla ];
    };
  }
  