This package defines tools for working with protocol buffers version 3 in Haskell.

This library provides a higher-level API to the proto3-wire library that supports:

• Type classes for encoding and decoding messages, and instances for all wire formats identified in the specification
• A higher-level approach to encoding and decoding, based on GHC.Generics
• A way of creating .proto files from Haskell types.

See the Proto3.Suite.Tutorial module for more details.

We test inter-language interop using protoc's built-in Python code generation. In order to successfully run these tests, you'll need to install the google protobuf Python library. It's best to create a virtualenv and then use pip to install the right version (virtualenv is a python utility which can be installed with pip).

$ virtualenv pyenv
$ source pyenv/bin/activate
$ pip install protobuf==3.0.0b3  # Need the latest version for the newest protoc

brew install python may also work.