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Date: Fri, 02 May 2014 18:29:55 +0400
From: Peter Zotov <whitequark@whitequark.org>
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Subject: [Caml-list] [ANN] ppx_protobuf

Greetings.

I have just released the first version of ppx_protobuf, a complete
Protocol Buffers implementation. Unlike Google's implementation,
ppx_protobuf derives the message structure directly from OCaml type
definitions, which allows a much more seamless integration with
OCaml's types. In particular, ppx_protobuf natively supports
sum types, while maintaining full backwards compatibility with
protoc.

ppx_protobuf uses the extension points API, and thus requires
a recent (>= 2014-04-29) 4.02 (trunk) compiler. It also requires
an unreleased version of ppx_tools. It is probably easiest
to install both from the source repositories[1][2].

The API is extensively documented at [3].

[1]: https://github.com/whitequark/ocaml-ppx_protobuf.git
[2]: https://github.com/alainfrisch/ppx_tools.git
[3]: 
https://github.com/whitequark/ocaml-ppx_protobuf/blob/master/README.md

-- 
   WBR, Peter Zotov.