anchor.diff:  { stdenv, fetchPypi, buildPythonPackage, service-identity, requests, six
  -, mock, twisted, incremental, pep8 }:
  +, mock, twisted, incremental, pep8, httpbin
  +}:
   
   buildPythonPackage rec {
     name = "${pname}-${version}";
  
positive.code:     sha256 = "ef72d2d5e0b24bdf29267b608fa33df0ac401743af8524438b073e1fb2b66f16";
    };
  
    propagatedBuildInputs = [ twisted requests six incremental service-identity ];
  
    checkInputs = [
      pep8
      mock
    ];
  
    postPatch = ''
  
negative.code:     trial treq
    '';
  
    # Failing tests https://github.com/twisted/treq/issues/208
    doCheck = false;
  
    meta = with stdenv.lib; {
      homepage = http://github.com/twisted/treq;
      description = "A requests-like API built on top of twisted.web's Agent";
  