anchor.diff:      owner = "pborman";
       repo = "uuid";
       sha256 = "1yk7vxrhsyk5izazdqywzfwb7iq6b5lwwdp0yc4rl4spqx30s0f9";
  +  };
  +
  +  satori_uuid = buildFromGitHub {
  +    rev = "v1.1.0";
  +    owner = "satori";
  +    repo = "uuid";
  +    sha256 = "19xzrdm1x07s7siavy8ssilhzyn89kqqpprmql1vsbplzljl4zgl";
     };
   
     vault = buildFromGitHub rec {
  
positive.code:     owner  = "inconshreveable";
      repo   = "log15";
      sha256 = "042icbwjrvnm7rn8i4hjkplgaxbwv9kj488b1zynl7s26fd3b57g";
      goPackageAliases = [
        "gopkg.in/inconshreveable/log15.v2"
      ];
      propagatedBuildInputs = [
        go-colorable
        stack
      ];
      date = "2016-08-10";
    };
  
    log = buildFromGitHub {
  
negative.code:   };
  
    golang-lru = buildFromGitHub {
      date = "2016-08-13";
      rev = "0a025b7e63adc15a622f29b0b2c4c3848243bbf6";
      owner  = "hashicorp";
      repo   = "golang-lru";
      sha256 = "1nq6q2l5ml3dljxm0ks4zivcci1yg2f2lmam9kvykkwm03m85qy1";
    };
  
    golang-petname = buildFromGitHub {
  