anchor.diff:        go-difflib
         go-spew
         objx
  +    ];
  +  };
  +
  +  kr_text = buildFromGitHub {
  +    version = 2;
  +    rev = "7cafcd837844e784b526369c9bce262804aebc60";
  +    date = "2016-05-04";
  +    owner = "kr";
  +    repo = "text";
  +    sha256 = "0qmc5rl6rhafiqiqnfrajngzr7qmwfwnj18yccd8jkpd5ix4r70d";
  +    propagatedBuildInputs = [
  +      pty
       ];
     };
   
  
positive.code:     version = 2;
      owner = "pelletier";
      repo = "go-toml";
      rev = "e32a2e04744250647a72bf17da1b09befc03b6b1";
      sha256 = "024b68s48cfr0q0x1rprn7h6461z7a43q412qxqshdymyiik3j9c";
      propagatedBuildInputs = [
        go-buffruneio
      ];
      meta.useUnstable = true;
      date = "2017-03-29";
    };
  
    go-units = buildFromGitHub {
  
negative.code: 
    google-cloud-go = buildFromGitHub {
      version = 2;
      date = "2017-04-05";
      rev = "ee12de41f35ce1867cec29587f14bd686362e4fa";
      owner = "GoogleCloudPlatform";
      repo = "google-cloud-go";
      sha256 = "01pp7l81969y11d2ij3i7l2q5cggi59cqdw49p9xc08r13l0phm6";
      goPackagePath = "cloud.google.com/go";
      goPackageAliases = [
        "google.golang.org/cloud"
  