anchor.diff:      # lots of networking and other fails
       buildInputs = with self; [ mock pytest nose ];
       propagatedBuildInputs = with self; [
  -      requests2 six pyyaml texttable docopt docker dockerpty websocket_client
  +      requests six pyyaml texttable docopt docker dockerpty websocket_client
         enum34 jsonschema
       ];
       patchPhase = ''
  
positive.code:       md5 = "90cf4d029d58ad58d19ea17a16e59c34";
      };
  
      propagatedBuildInputs = [ self.msgpack self.requests2 self.flask self.gevent self.pyzmq ];
      buildInputs = [ self.mock self.unittest2 ];
  
      meta = {
  
negative.code:     '';
  
      propagatedBuildInputs = with self; [
        requests
        cgroup-utils docker-custom docutils lti mock pygments
        pymongo pyyaml rpyc sh simpleldap sphinx_rtd_theme tidylib
        websocket_client watchdog webpy-custom
  