anchor.diff:  
     nativeBuildInputs = [
       cmake
  -    pkgconfig which git python2Packages.wrapPython
  +    pkgconfig which git python2Packages.wrapPython makeWrapper
       (ensureNewerSourcesHook { year = "1980"; })
     ];
     
  
positive.code: 
    postFixup = ''
      wrapPythonPrograms
    '';
  
    enableParallelBuilding = true;
  
negative.code:     ps.pecan
      ps.prettytable
      ps.webob
      ps.cherrypy
  	]);
  
  in
  