anchor.diff:  
     ugorji_go = buildFromGitHub {
       version = 2;
  -    date = "2016-09-20";
  -    rev = "b7eff9abce531d6aeda923e759ae668e56601d21";
  +    date = "2016-09-27";
  +    rev = "faddd6128c66c4708f45fdc007f575f75e592a3c";
       owner = "ugorji";
       repo = "go";
  -    sha256 = "02kqy6nndr0x9xfmqsykqcv1bywp2x2yzk72wdasvzdxhb4pbafq";
  +    sha256 = "0gav420a4xglf7p7g9ikm8bnm51y447v6plwyngajmam2ywp16gr";
       goPackageAliases = [ "github.com/hashicorp/go-msgpack" ];
     };
   
  
positive.code: 
    go-oidc = buildFromGitHub {
      version = 2;
      date = "2016-08-29";
      rev = "fe7346e2e6855bda769d5b3db7d917f159c5613c";
      owner  = "coreos";
      repo   = "go-oidc";
      sha256 = "0jdb2k17g58lkv0dfhdchyz9pxs601h4p17rhwzp9bdj5w146jww";
      propagatedBuildInputs = [
        clockwork
        pkg
  
negative.code: 
    net = buildFromGitHub {
      version = 2;
      rev = "cd95c68ba21fc7ee16ee38cc420473e3d8c4afd8";
      date = "2016-10-01";
      owner  = "golang";
      repo   = "net";
      sha256 = "1a9vjy14mdzz9iy47jriq3q38vb3qd3nvzfmvh7yl5ssyi2yhayq";
      goPackagePath = "golang.org/x/net";
      goPackageAliases = [
        "code.google.com/p/go.net"
  