anchor.diff:    checkPhase = ''
       py.test -vs tests
    '';
  -  checkInputs = with pythonPackages; [ py pytest pytest-datafiles mock pytest-mock pytestrunner ];
  -  propagatedBuildInputs = with pythonPackages; [ requests click arrow ];
  +
  +  patches = [
  +    (fetchpatch {
  +      url = https://github.com/TailorDev/Watson/commit/f5760c71cbc22de4e12ede8f6f7257515a9064d3.patch;
  +      sha256 = "0s9h26915ilpbd0qhmvk77r3gmrsdrl5l7dqxj0l5q66fp0z6b0g";
  +    })
  +  ];
  +
  +  checkInputs = [ py pytest pytest-datafiles mock pytest-mock pytestrunner ];
  +  propagatedBuildInputs = [ requests click arrow ];
   
     meta = with stdenv.lib; {
       homepage = https://tailordev.github.io/Watson/;
  
positive.code: { stdenv, pythonPackages }:
  
  pythonPackages.buildPythonApplication rec {
    pname = "td-watson";
    name = "${pname}-${version}";
    version = "1.4.0";
  
    src = pythonPackages.fetchPypi {
      inherit version pname;
      sha256 = "1py0g4990jmvq0dn7jasda7f10kzr41bix46hnbyc1rshjzc17hq";
    };
  
    # uses tox, test invocation fails
  
negative.code:     license = licenses.mit;
      maintainers = with maintainers; [ mguentner ] ;
    };
  }
  