anchor.diff:  
   let
     v_maj = "4.8";
  -  v_min = "5";
  +  v_min = "6";
     vers = "${v_maj}.${v_min}";
   in
   
  
positive.code:   src = fetchurl {
      url = "http://download.qt-project.org/official_releases/qt/"
        + "${v_maj}/${vers}/qt-everywhere-opensource-src-${vers}.tar.gz";
      sha256 = "0f51dbgn1dcck8pqimls2qyf1pfmsmyknh767cvw87c3d218ywpb";
    };
  
    # The version property must be kept because it will be included into the QtSDK package name
  
negative.code: 
    patches =
      [ ./glib-2.32.patch
        (substituteAll {
          src = ./dlopen-absolute-paths.diff;
          inherit cups icu libXfixes;
  