anchor.diff:  
     gcloud-golang = buildFromGitHub {
       version = 2;
  -    date = "2016-10-07";
  -    rev = "5af4269f950e91e917bab77f1138139023c868c2";
  +    date = "2016-10-10";
  +    rev = "daafb8782bb0c3cc73c413c1a11a140989243b31";
       owner = "GoogleCloudPlatform";
       repo = "gcloud-golang";
  -    sha256 = "0z82ksxpyhw6k6j1vswb1x4an8hiz5w1grq1161w1gilla1p3s45";
  +    sha256 = "1v8nmdwsfg3lqj1abb10yvfb4l9cdz7lcgj4bcnbm43nlx2fjagk";
       goPackagePath = "cloud.google.com/go";
       goPackageAliases = [
         "google.golang.org/cloud"
  
positive.code: 
    dns = buildFromGitHub {
      version = 2;
      rev = "b96e5025a30182bdc85b3bdf971a8c9f785c0c50";
      date = "2016-10-05";
      owner  = "miekg";
      repo   = "dns";
      sha256 = "13gjq9b6hdjx81jvvpp471wiy6j955k3x20qk2l03vzjj9rxydg2";
    };
  
    weppos-dnsimple-go = buildFromGitHub {
  
negative.code: 
    google-api-go-client = buildFromGitHub {
      version = 2;
      rev = "45c1c8fbb52e06888fad4b269d9e1c280d638f42";
      date = "2016-10-10";
      owner = "google";
      repo = "google-api-go-client";
      sha256 = "1nahlny5vgyrb71npqbk3dhc6k4m7cl8wlf3f9hzz49jzvspjjd8";
      goPackagePath = "google.golang.org/api";
      goPackageAliases = [
        "github.com/google/google-api-client"
  