anchor.diff:    };
   
     yamux = buildFromGitHub {
  -    version = 1;
  -    date = "2016-07-20";
  -    rev = "d1caa6c97c9fc1cc9e83bbe34d0603f9ff0ce8bd";
  +    version = 3;
  +    date = "2017-10-05";
  +    rev = "f5742cb6b85602e7fa834e9d5d91a7d7fa850824";
       owner  = "hashicorp";
       repo   = "yamux";
  -    sha256 = "19frd5lldxrjybdj8a3al3bq2wn0bghrnldxvrydr5ysf782qalw";
  +    sha256 = "140jjs68b623wm2snv4fgxylwx1fb0zfssijdw1r2s3apr63ihiv";
     };
   
     xdr = buildFromGitHub {
  
positive.code: 
    gocql = buildFromGitHub {
      version = 3;
      rev = "ce5020aabae349deda77bc1d559ef2300d3c93c5";
      owner  = "gocql";
      repo   = "gocql";
      sha256 = "1k680gmy58ymlrm9l75wxy6qk0vy17rmiz9yz09xmyvdchr7gbi6";
      propagatedBuildInputs = [
        inf_v0
        snappy
        hailocab_go-hostpool
        net
      ];
      date = "2017-09-30";
    };
  
    gofuzz = buildFromGitHub {
  
negative.code:     version = 3;
      owner = "minio";
      repo = "minio";
      rev = "88938340b367c0dd222430692fbe1f014fd7b0e2";
      sha256 = "1smlqi9bim8nkmrd9aimk205yf32422lwpniqx4id9byk71p90xc";
      propagatedBuildInputs = [
        amqp
        atomic
  