anchor.diff:      ++ lib.optional (!isPy3k) enum34;
   
     dontWrapQtApps = true;
  +
  +  # Configure only needed when building with sip 4 (python 2)
  +  dontConfigure = isPy3k;
   
     configurePhase = ''
       runHook preConfigure
  
positive.code: 
  let
  
    inherit (pythonPackages) buildPythonPackage python isPy3k pyqt5 enum34;
    inherit (pyqt5) sip;
    # source: https://www.riverbankcomputing.com/pipermail/pyqt/2020-June/042985.html
    patches = lib.optional (lib.hasPrefix "5.14" pyqt5.version)
  
negative.code: in buildPythonPackage rec {
    pname = "PyQtWebEngine";
    version = "5.15.4";
    format = if isPy3k then "pyproject" else "other";
  
    src = pythonPackages.fetchPypi {
      inherit pname version;
  