anchor.diff:    });
   
     ## OFFICIAL GO PACKAGES
  +
  +  appengine = buildFromGitHub {
  +    rev = "7f9f17f358c21d90f402980f83776898c53cb377";
  +    date = "2015-12-07";
  +    owner = "golang";
  +    repo = "appengine";
  +    sha256 = "0narqlivzvwlwxi96aqyxpvw6zbzy19cjqiglp12rf130x46bydg";
  +    goPackagePath = "google.golang.org/appengine";
  +    propagatedBuildInputs = [ protobuf net ];
  +  };
   
     crypto = buildFromGitHub {
       rev      = "7b85b097bf7527677d54d3220065e966a0e3b613";
  
positive.code:     repo = "go-metrics";
      sha256 = "06gg72krlmd0z3zdq6s716blrga95pyj8dc2f2psfbknbkyrkfqa";
      propagatedBuildInputs = [ stathat ];
    };
  
    appengine = buildFromGitHub {
      rev = "72f4367c4f14a20a98dcc8b762953b40788407be";
      owner = "golang";
      repo = "appengine";
      sha256 = "1phjkb0f0xp08db3irbf5wzdsxzsddsig5wv70wvmnr44ijllh4f";
      goPackagePath = "google.golang.org/appengine";
      buildInputs = [ protobuf net ];
    };
  
    armon.go-metrics = buildGoPackage rec {
  
negative.code:       + stdenv.lib.concatStringsSep "\\|" ([ "testdata" ] ++ stdenv.lib.optionals (stdenv.lib.versionAtLeast go.meta.branch "1.5") [ "vet" "cover" ])
        + "\\)";
  
      buildInputs = [ appengine net ];
  
      # Do not copy this without a good reason for enabling
      # In this case tools is heavily coupled with go itself and embeds paths.
  