anchor.diff:      lrelease GPXLab/locale/*.ts
     '';
   
  +  postInstall = lib.optionalString stdenv.isDarwin ''
  +    mkdir -p $out/Applications
  +    mv GPXLab/GPXLab.app $out/Applications
  +    wrapQtApp $out/Applications/GPXLab.app/Contents/MacOS/GPXLab
  +  '';
  +
     enableParallelBuilding = true;
   
     meta = with lib; {
  
positive.code:     '';
      license = licenses.gpl3;
      maintainers = with maintainers; [ sikmir ];
      platforms = platforms.linux;
    };
  }
  
negative.code: { stdenv, mkDerivation, lib, fetchFromGitHub, qmake, qttools, qttranslations }:
  
  mkDerivation rec {
    pname = "gpxlab";
  