anchor.diff:  
     google-api-go-client = buildFromGitHub {
       version = 2;
  -    rev = "3cf64a039723963488f603d140d0aec154fdcd20";
  -    date = "2016-10-06";
  +    rev = "45c1c8fbb52e06888fad4b269d9e1c280d638f42";
  +    date = "2016-10-10";
       owner = "google";
       repo = "google-api-go-client";
  -    sha256 = "087ajxa7acjwmpz31nchw5dm3fgxx9irfki7qlyn9lpcrq8wbgvl";
  +    sha256 = "1nahlny5vgyrb71npqbk3dhc6k4m7cl8wlf3f9hzz49jzvspjjd8";
       goPackagePath = "google.golang.org/api";
       goPackageAliases = [
         "github.com/google/google-api-client"
  
positive.code: 
    tools = buildFromGitHub {
      version = 2;
      rev = "03663480faa767e684bf17d7c45c65f79d7f5ef3";
      date = "2016-10-05";
      owner = "golang";
      repo = "tools";
      sha256 = "0a2byvj9580iam83w3fvcajayhh31dfkyr6yf1mgsklcl1ip19j4";
      goPackagePath = "golang.org/x/tools";
      goPackageAliases = [ "code.google.com/p/go.tools" ];
  
  
negative.code: 
    go-jose = buildFromGitHub {
      version = 2;
      rev = "v1.1.0";
      owner = "square";
      repo = "go-jose";
      sha256 = "0knnpf489rkn8w45dlf1i6vsqyc4hgn6mzca3kqjxgrvd7jc7nmj";
      goPackagePath = "gopkg.in/square/go-jose.v1";
      goPackageAliases = [
        "github.com/square/go-jose"
  