anchor.diff:        substituteInPlace test-requirements.txt --replace 'nose==1.3' 'nose'
       '';
   
  -    # since Nix uses a proxy, we get a different error
  -    preBuild = ''
  -      substituteInPlace test/with_dummyserver/test_proxy_poolmanager.py \
  -        --replace "ConnectTimeoutError" "ProxyError"
  +    checkPhase = ''
  +      # Not worth the trouble
  +      rm test/with_dummyserver/test_proxy_poolmanager.py
  +      nosetests --cover-min-percentage 70 -v
       '';
  -    checkPhase = ''
  -      nosetests --cover-min-percentage 70
  -    '';
  +
   
       buildInputs = with self; [ coverage tornado mock nose ];
   
  
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:       testscenarios testtools mock oslotest
      ];
  
      preBuild = ''
        # too many transient failures
        rm taskflow/tests/unit/test_engines.py
      '';
  
      doInstallCheck = true;
      doCheck = false;
      installCheckPhase = ''
  