anchor.diff:      version = 2;
       owner = "spf13";
       repo = "viper";
  -    rev = "a78f70b5b977efe08e313a9e2341c3f5457abdaf";
  -    date = "2016-09-20";
  -    sha256 = "1hh449y372qzizqbcg9kv7knmc0ydd1nrrz5yq7rmy7y7pmgdx7d";
  +    rev = "382f87b929b84ce13e9c8a375a4b217f224e6c65";
  +    date = "2016-09-26";
  +    sha256 = "11q2n6m8sshwq7y3vg3m4hg88i81f34xwv1ic51i69v3gnlalavy";
       buildInputs = [
         crypt
         pflag
  
positive.code:     version = 2;
      owner = "pkg";
      repo = "sftp";
      rev = "8197a2e580736b78d704be0fc47b2324c0591a32";
      date = "2016-09-08";
      sha256 = "11jdqi93ivpp6mr4bxdis20jnjpqf8b2kvn1gd7917n8i9bjdlxj";
      propagatedBuildInputs = [
        crypto
        errors
  
negative.code: 
    prometheus_common = buildFromGitHub {
      version = 2;
      date = "2016-10-02";
      rev = "85637ea67b04b5c3bb25e671dacded2977f8f9f6";
      owner = "prometheus";
      repo = "common";
      sha256 = "02dd278ns2m0gg6kn8fdqq6cjqg30lvd1mwwx71rm5z3dxcfr1hy";
      buildInputs = [
        logrus
        net
  