anchor.diff:        "lib"
         "tlsutil"
       ];
  -    meta.useUnstable = true;
  +    meta.autoUpdate = false;
     };
   
     consul-template = buildFromGitHub {
  
positive.code:       urfave_cli
        runtime-spec
      ];
      meta.useUnstable = true;
    };
  
    runtime-spec = buildFromGitHub {
  
negative.code: 
    consul_api = buildFromGitHub {
      inherit (consul) owner repo;
      rev = "6af6baf02ced3f3163831290dc559583726770e9";
      date = "2016-07-29";
      sha256 = "a6c14a88a4e613df46b50d87571027dc1ecbccfd3c9382faf9f217f4de091ffb";
      propagatedBuildInputs = [
        go-cleanhttp
        serf
  