anchor.diff: -{ stdenv, fetchPypi, buildPythonPackage, setuptools_scm, pygccxml }:
  +{ stdenv, fetchPypi, buildPythonPackage, isPy3k, setuptools_scm, pygccxml }:
   buildPythonPackage rec {
     pname = "PyBindGen";
     version = "0.19.0";
  
positive.code:     maintainers = with maintainers; [ teto ];
    };
  }
  
  
  
negative.code:   buildInputs = [ setuptools_scm ];
  
    checkInputs = [ pygccxml ];
    doCheck = (!isPy3k); # Fails to import module 'cxxfilt' from pygccxml on Py3k
  
    meta = with stdenv.lib; {
      homepage = https://github.com/gjcarneiro/pybindgen;
  