anchor.diff:    };
   
     prometheus_client_golang = buildFromGitHub {
  -    rev = "b90ee0840e8e7dfb84c08d13b9c4f3a794586a21";
  +    rev = "d38f1ef46f0d78136db3e585f7ebe1bcc3476f73";
       owner = "prometheus";
       repo = "client_golang";
  -    sha256 = "019963h05d0c7qwhbki01jbdfm0cpgjxrpych8y5w1kmwnsfifyl";
  +    sha256 = "12h8k14hr6g62j642xr0ci9hhgmmhzw82a9yw234wsv9z1p6x1v4";
       propagatedBuildInputs = [
         goautoneg
         net
  
positive.code:       prometheus_procfs
        beorn7_perks
      ];
      date = "2016-05-13";
    };
  
    prometheus_client_model = buildFromGitHub {
  
negative.code:   };
  
    groupcache = buildFromGitHub {
      date = "2016-05-15";
      rev = "02826c3e79038b59d737d3b1c0a1d937f71a4433";
      owner  = "golang";
      repo   = "groupcache";
      sha256 = "093p9jiid2c03d02g8fada7bl05244caddd7qjmjs0ggsrardc46";
      buildInputs = [ protobuf ];
    };
  
    grpc = buildFromGitHub {
      rev = "b0b7afa173ab8030774fdf383cac027c3c5077d2";
      date = "2016-05-17";
      owner = "grpc";
      repo = "grpc-go";
      sha256 = "01vmparkz8sjplwc7prbgiwdrvavdn618g4gw5gw61k6094pdx20";
      goPackagePath = "google.golang.org/grpc";
      goPackageAliases = [ "github.com/grpc/grpc-go" ];
      propagatedBuildInputs = [ http2 net protobuf oauth2 glog ];
  