anchor.diff:      doxygen
       wxGTK.gtk
       pkg-config
  +    setuptools
     ] ++ lib.optionals stdenv.isLinux [
       autoPatchelfHook
     ];
  
positive.code: , stdenv
  , fetchPypi
  , buildPythonPackage
  , which
  , pkg-config
  , python
  
negative.code:   pname = "wxPython";
    version = "4.1.1";
    disabled = isPy27;
    format = "other";
  
    src = fetchPypi {
      inherit pname version;
  