anchor.diff:        inherit
           goPackagePath
           rev;
  -      date = "2017-09-30";
  +      date = "2017-10-05";
       };
  -    rev = "906273f42cdebd65de3a53f30dd9e23de1b55ba9";
  +    rev = "7a7376eff6a51c6a053fcf8e9e50bf01a20f2673";
       goPackagePath = "google.golang.org/api";
       src = fetchzip {
         version = 3;
  
positive.code: 
    aws-sdk-go = buildFromGitHub {
      version = 3;
      rev = "v1.12.2";
      owner  = "aws";
      repo   = "aws-sdk-go";
      sha256 = "1j5gvlm62s812a788byv8ryd74ccqkr6bg1m0p2i3zl57pywy7dl";
      excludedPackages = "\\(awstesting\\|example\\)";
      buildInputs = [
        tools
  
negative.code:     version = 3;
      owner = "coreos";
      repo = "etcd";
      rev = "867e3da0c4fd82491a486c9a2256d0b45083ea4d";
      sha256 = "1n23y6yw80lc1v1c7vh2zy2si4ha8fc46634zfhkljdplg1gr67m";
      propagatedBuildInputs = [
        bbolt
        btree
  