anchor.diff:        testscenarios testtools mock oslotest
       ];
   
  +    preBuild = ''
  +      # too many transient failures
  +      rm taskflow/tests/unit/test_engines.py
  +    '';
  +
       doInstallCheck = true;
       doCheck = false;
       installCheckPhase = ''
  
positive.code:       six
      ];
      buildInputs = with self; [
        eventlet gevent flake8 nose mock coverage pkgs.openjdk8
      ];
  
      preCheck = ''
        sed -i 's/test_unicode_auth/noop/' kazoo/tests/test_client.py
      '';
  
      ZOOKEEPER_PATH = "${pkgs.zookeeper}";
  
      meta = with stdenv.lib; {
        description = "=====";
        homepage = "https://kazoo.readthedocs.org";
      };
    };
  
negative.code:       substituteInPlace test-requirements.txt --replace 'nose==1.3' 'nose'
      '';
  
      checkPhase = ''
        # Not worth the trouble
        rm test/with_dummyserver/test_proxy_poolmanager.py
        nosetests --cover-min-percentage 70 -v
      '';
  
  
      buildInputs = with self; [ coverage tornado mock nose ];
  
  