anchor.diff:      license = licenses.gpl3;
       description = "A discrete time event network simulator";
       platforms = with platforms; unix;
  -    maintainers = with maintainers; [ teto ];
  +    maintainers = with maintainers; [ teto rgrunbla ];
     };
   }
  
positive.code: in
  stdenv.mkDerivation rec {
    pname = "ns-3";
    version = "32";
  
    src = fetchFromGitLab {
      owner = "nsnam";
  
negative.code: 
    postPatch = ''
      patchShebangs doc/ns3_html_theme/get_version.sh
    '';
  
    wafConfigureFlags = with stdenv.lib; [
  