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