anchor.diff:      repo   = "gofuzz";
       sha256 = "1ghcx5q9vsgmknl9954cp4ilgayfkg937c1z4m3lqr41fkma9zgi";
       date = "2017-06-12";
  -  };
  -
  -  gohistogram = buildFromGitHub {
  -    version = 3;
  -    rev = "v1.0.0";
  -    owner  = "VividCortex";
  -    repo   = "gohistogram";
  -    sha256 = "02bikhfr47gp4ww9mmz9pz6q4g6293z0fn8kd83kn0i12x0s8b2l";
     };
   
     goid = buildFromGitHub {
  
positive.code:       golang_protobuf_extensions
        httprouter
        logrus
        kit_for_prometheus
        kingpin_v2
        net
        prometheus_client_golang
  
negative.code:     owner = "go-kit";
      repo = "kit";
      sha256 = "1wf764qbq7apl4sri8924qxkipw544hbcx9vkvqbxx41wf88w905";
    };
  
    kit_logging = kit.override {
      subPackages = [
        "log"
        "log/level"
  