anchor.diff:    };
   
     dockerpty = buildPythonPackage rec {
  -    name = "dockerpty-0.3.2";
  +    name = "dockerpty-0.3.4";
   
       src = pkgs.fetchurl {
         url = "https://pypi.python.org/packages/source/d/dockerpty/${name}.tar.gz";
  -      md5 = "1f97b24d2f4b2c345f176f91655002dd";
  -    };
  +      md5 = "92fb66d28aa19bf5268e7e3935670e5d";
  +    };
  +
  +    propagatedBuildInputs = with self; [ six ];
   
       meta = {
         description = "Functionality needed to operate the pseudo-tty (PTY) allocated to a docker container";
  
positive.code: 
  
    websocket_client = buildPythonPackage rec {
      name = "websocket-client-0.17.0";
  
      src = pkgs.fetchurl {
        url = "https://pypi.python.org/packages/source/w/websocket-client/${name}.tar.gz";
        md5 = "c86591719085eaf4a01c2275e0c834fc";
      };
  
      propagatedBuildInputs = with self; [ six backports_ssl_match_hostname_3_4_0_2 unittest2 argparse ];
  
negative.code:   };
  
    docker_compose = buildPythonPackage rec {
      version = "1.4.0";
      name = "docker-compose-${version}";
      namePrefix = "";
      disabled = isPy3k || isPyPy;
  
      src = pkgs.fetchurl {
        url = "https://pypi.python.org/packages/source/d/docker-compose/${name}.tar.gz";
        md5 = "a93e801ebe829c2f869cb23d0b606272";
      };
  
      propagatedBuildInputs = with self; [
        six requests pyyaml texttable docopt docker dockerpty websocket_client
        (requests2.override {
          src = pkgs.fetchurl {
            url = "https://pypi.python.org/packages/source/r/requests/requests-2.6.1.tar.gz";
            md5 = "da6e487f89e6a531699b7fd97ff182af";
          };
        })
      ];
  