anchor.diff:      version = 2;
       owner = "minio";
       repo = "cli";
  -    date = "2016-11-25";
  -    rev = "bf72f027481f5fadaf8800f62c72904e6bd7a200";
  -    sha256 = "01cdjaaf4lfr1y555nczvqzaq8ng8caap7c4p9sp1f16by9p8fa3";
  +    date = "2017-02-15";
  +    rev = "cea7bbb0e52ac4d24c1de3f450545f38246075a2";
  +    sha256 = "0bzsbm6ydai9qvmqjj92paca17d0f7wqs74qzpjsh4g96vhlggc8";
       buildInputs = [
         elastic_v5
         toml
  
positive.code:     version = 2;
      owner = "coreos";
      repo = "etcd";
      rev = "2510a1488c51eb503c396c7e4e44ee910e4857a6";
      sha256 = "06lnn9dk8vjpyi9fcka0mvpx1pza5rgvp4vcdyam8ajkjcbdcgxb";
      buildInputs = [
        bolt
        btree
  
negative.code: 
    color = buildFromGitHub {
      version = 2;
      rev = "v1.4.0";
      owner  = "fatih";
      repo   = "color";
      sha256 = "1f39nxq92dwvjipr05kfgri3hvq4nsm8ciq4sp3p6s6950wqn6ry";
      propagatedBuildInputs = [
        go-colorable
        go-isatty
  