anchor.diff:      version = 3;
       owner = "moby";
       repo = "moby";
  -    rev = "500d2673560766052dff052ab0b543f62e759856";
  -    date = "2017-05-09";
  -    sha256 = "0ylb3vh9hqmjkwf7nvxpwp1gpbkchnbmxxj8ys8ckampvh6zvs6y";
  +    rev = "69c35dad8e7ec21de32d42b9dd606d3416ae1566";
  +    date = "2017-05-11";
  +    sha256 = "0nbl16xsq2snvpr5s69i6ldbam28rd00979m57c0qcg799ji8qjh";
       goPackageAliases = [
         "github.com/docker/docker"
       ];
  
positive.code:   };
  
    go-multihash = buildFromGitHub {
      version = 2;
      rev = "625115a7fb33ddfafa3efe3ccfef9cfe459936b3";
      owner  = "multiformats";
      repo   = "go-multihash";
      sha256 = "1zi395jd0hjm19pl4ypmf2761lzn1c1dn3im5865f7fmzpkjpbzy";
      goPackageAliases = [ "github.com/jbenet/go-multihash" ];
      propagatedBuildInputs = [
        crypto
  
negative.code: 
    go-ethereum = buildFromGitHub {
      version = 3;
      date = "2017-05-11";
      rev = "7c707d14d16220d9b73af3a4dcd437afb5a10673";
      owner  = "ethereum";
      repo   = "go-ethereum";
      sha256 = "026jdhzlfykh7pcsshxpmv5i8gsm4q2kzwk34fizkpmnakk94b4h";
      subPackages = [
        "crypto/sha3"
      ];
  