anchor.diff:      repo   = "go-version";
       sha256 = "13jrvfmg7vx1zzsjbwyfaxh06y8si7f9drcpy0400pv9fv9fxfs7";
       date = "2016-10-31";
  +  };
  +
  +  go-wordwrap = buildFromGitHub {
  +    version = 2;
  +    rev = "ad45545899c7b13c020ea92b2072220eefad42b8";
  +    owner  = "mitchellh";
  +    repo   = "go-wordwrap";
  +    sha256 = "0yj17x3c1mr9l3q4dwvy8y2xgndn833rbzsjf10y48yvr12zqjd0";
  +    date = "2015-03-14";
     };
   
     go-zookeeper = buildFromGitHub {
  
positive.code:       go-immutable-radix go-memdb ugorji_go go-multierror go-reap go-syslog
        golang-lru hcl logutils memberlist net-rpc-msgpackrpc raft_v2 raft-boltdb_v2
        scada-client yamux muxado dns mitchellh_cli mapstructure columnize
        copystructure hil hashicorp-go-uuid crypto sys aws-sdk-go
      ];
  
      propagatedBuildInputs = [
  
negative.code:     date = "2014-07-04";
    };
  
    go-sockaddr = buildFromGitHub {
      version = 2;
      rev = "c97459b5a66774ed49deb0cc739f035fb7860bcf";
      owner  = "hashicorp";
      repo   = "go-sockaddr";
      sha256 = "13p98glbz0xaxs4i55fln0c71sazaxh0f5hnir2zr3z0sjmdxs7s";
      date = "2016-12-03";
      propagatedBuildInputs = [
        mitchellh_cli
        columnize
        errwrap
        go-wordwrap
      ];
    };
  
    go-spew = buildFromGitHub {
      version = 2;
      rev = "v1.1.0";
  