anchor.diff:    };
   
     go-libp2p-gostream = buildFromGitHub {
  -    version = 3;
  +    version = 5;
       owner = "hsanjuan";
       repo = "go-libp2p-gostream";
  -    date = "2017-10-23";
  -    rev = "c75991eb05a4915abc8184d27df230858e07d600";
  -    sha256 = "0j1hg8l6yrcxb5hh57qy6nb35fhakpglazlby909bqwc6yanw76b";
  +    date = "2018-02-05";
  +    rev = "679345668c02d41245e4a5ab839606657663f3d0";
  +    sha256 = "01i2japa2x13iwr82458y27r5pzdgalsjppc37ffpivk2j7pxsmy";
       propagatedBuildInputs = [
         go-libp2p-host
         go-libp2p-net
  
positive.code: 
    ipfs = buildFromGitHub {
      version = 5;
      rev = "b37f8565134d989fbd1bb96c61d76c981d4be950";
      date = "2018-02-05";
      owner = "ipfs";
      repo = "go-ipfs";
      sha256 = "60fc34b5bf1403f3cc990a489bc4655b41f62aa635fe4844c147c5fb12732a93";
      gxSha256 = "1808faldq3j9cbw9qxn42xdgx4a2kv3d1sf5wa413a8kfvzkqsj4";
      nativeBuildInputs = [
        gx-go.bin
      ];
  
negative.code:       procfs
        perks
      ];
      date = "2018-02-10";
    };
  
    prometheus_client_model = buildFromGitHub {
  