anchor.diff:  
     lxd = buildFromGitHub {
       version = 2;
  -    rev = "lxd-2.2";
  +    rev = "lxd-2.3";
       owner  = "lxc";
       repo   = "lxd";
  -    sha256 = "124fzw5hik8hjmy993cw73qk6hc6arzws8vjab0k44sgdz1lj99z";
  +    sha256 = "12gcqh1r7a2vihxj4xidi1nvjy75az4d7g5nj8zg26jnbaxwi2zx";
       excludedPackages = "test"; # Don't build the binary called test which causes conflicts
       buildInputs = [
         crypto
  
positive.code: 
    crypto = buildFromGitHub {
      version = 2;
      rev = "484eb34681af59703e639b971bc307019182c41f";
      date = "2015-11-08";
      owner    = "golang";
      repo     = "crypto";
      sha256 = "10lr2p1p8ln9v89qqz8s2qfyzfl8yxvlasmyxhfirvd3mw0fspch";
      goPackagePath = "golang.org/x/crypto";
      goPackageAliases = [
        "code.google.com/p/go.crypto"
  
negative.code: 
    goleveldb = buildFromGitHub {
      version = 2;
      rev = "8d31aaf25e3fff25a66d0e116a4453ad7ccc7b76";
      date = "2016-10-01";
      owner = "syndtr";
      repo = "goleveldb";
      sha256 = "1xwcr9f4442lr4w0g8j38yi0qr7jnqy6nf6dlxn2na5lfx904kzi";
      propagatedBuildInputs = [ ginkgo gomega snappy ];
    };
  
  