anchor.diff:  
     go-multiaddr-net = buildFromGitHub {
       version = 2;
  -    rev = "97164e677cc0cba05d67defc077f9921bfd85df8";
  +    rev = "b3ee630630aa38429dbf6e7883ea07f963623208";
       owner  = "multiformats";
       repo   = "go-multiaddr-net";
  -    sha256 = "1rr33nb744cg86ndxy74g32ixzbx5584mh0162cvvxyja7rks1r7";
  -    date = "2016-10-03";
  +    sha256 = "04jsiyaqc300qh16xa0rhgwd8svnqv9821p0mkpr2z7fdy32z6d9";
  +    date = "2016-10-04";
       goPackageAliases = [ "github.com/jbenet/go-multiaddr-net" ];
       propagatedBuildInputs = [
         go-multiaddr
  
positive.code: 
    text = buildFromGitHub {
      version = 2;
      rev = "098f51fb687dbaba1f6efabeafbb6461203f9e21";
      date = "2016-09-28";
      owner = "golang";
      repo = "text";
      sha256 = "1xy5igz3am7iqlxwv7gqvy77838839vjs2qsmbhbjr2a1is0gyr7";
      goPackagePath = "golang.org/x/text";
      goPackageAliases = [ "github.com/golang/text" ];
      excludedPackages = "cmd";
  
negative.code: 
    oauth2 = buildFromGitHub {
      version = 2;
      rev = "1e695b1c8febf17aad3bfa7bf0a819ef94b98ad5";
      date = "2016-10-06";
      owner = "golang";
      repo = "oauth2";
      sha256 = "14nkx09h2166111p8yfgaqfgnw22r25iyhfqzcgw3d4iwhib18g8";
      goPackagePath = "golang.org/x/oauth2";
      goPackageAliases = [ "github.com/golang/oauth2" ];
      propagatedBuildInputs = [
  