anchor.diff:          sha256 = "0s8sqyc72lnc7dxd4cl559gyfx83x71jjpsld3i3nbp3mwwamczp";
         };
   
  -  buildInputs = [python27 makeWrapper];
  +  buildInputs = [ python makeWrapper ];
   
     installPhase = ''
       mkdir -p $out/bin $out/share/
  
positive.code: { stdenv, fetchzip, python27, python27Packages, makeWrapper }:
  
  with python27Packages;
  
  stdenv.mkDerivation rec {
    pname = "google-app-engine-go-sdk";
  
negative.code:     # create wrappers with correct env
      for i in goapp go-app-stager *.py; do
        makeWrapper "$out/share/go_appengine/$i" "$out/bin/$i" \
          --prefix PATH : "${python}/bin" \
          --prefix PYTHONPATH : "$(toPythonPath ${cffi}):$(toPythonPath ${cryptography}):$(toPythonPath ${pyopenssl})"
      done
    '';
  