anchor.diff:      sha256 = "127rpdjgkcyjifmkqbhmqfbzlgi32n54rybrdxja610qr906y40c";
     };
   
  +  patches = [
  +    # fix networkx rename issue of GiGraph.node -> DiGraph.nodes, remove on next bump
  +    ( fetchpatch {
  +      url = "https://github.com/python-streamz/streamz/commit/f8b7bdb6bcb9dd107677e82e755ff4695bf0c4be.patch";
  +      sha256 = "1b2frp0j369gf55plxk2pigblhsc44m0rm9az01y83cjlcm26x2s";
  +    })
  +    # also, fix networkx rename issue of GiGraph.node -> DiGraph.nodes, remove on next bump
  +    ( fetchpatch {
  +      url = "https://github.com/python-streamz/streamz/commit/f7603f4cbea54f1548885881206a3ca9d6e52250.patch";
  +      sha256 = "1125kqiaz6b3cifz0yk1zrkxj5804lfzl4kc58jhqajv8rsrbs45";
  +    })
  +  ];
  +
     propagatedBuildInputs = [
  +    networkx
       tornado
       toolz
       zict
  
positive.code:     confluent-kafka
      distributed
      graphviz
      networkx
      pytest_4
      requests
    ];
  
    # Disable test_tcp_async because fails on sandbox build
    checkPhase = ''
      pytest --deselect=streamz/tests/test_sources.py::test_tcp_async \
        --deselect=streamz/tests/test_sources.py::test_tcp
    '';
  
    meta = with lib; {
      description = "Pipelines to manage continuous streams of data";
      homepage = "https://github.com/mrocklin/streamz";
      license = licenses.bsd3;
      maintainers = [ maintainers.costrouc ];
    };
  
negative.code: { lib, buildPythonPackage, fetchPypi, fetchpatch
  , tornado
  , toolz
  , zict
  , six
  , pytest
  , networkx
  , distributed
  , confluent-kafka
  