anchor.diff:        hashland
         murmur3
       ];
  -    date = "2017-06-28";
  +    date = "2017-07-13";
     };
   
     go-multipart-files = buildFromGitHub {
  
positive.code:     version = 3;
      owner = "libp2p";
      repo = "go-libp2p-net";
      date = "2017-05-27";
      rev = "2680a9894c7aabada540f728a53d7c1a16a1a44a";
      sha256 = "1mjp9k37mj1b8adxl0rh91n3an1spx236z165h073hpsj3cqadgq";
      propagatedBuildInputs = [
        goprocess
        go-libp2p-interface-conn
  
negative.code:     version = 3;
      owner = "libp2p";
      repo = "go-libp2p-host";
      date = "2017-07-12";
      rev = "3e7db6a794e01c2bf7e0438b2aaf23d245603946";
      sha256 = "0vrn4m7acxr16kj07bdmj732p4l2wxr5ggwa6qms1mjc0s03pyn7";
      propagatedBuildInputs = [
        go-libp2p-connmgr
        go-libp2p-net
        go-libp2p-peer
        go-libp2p-peerstore
  