I'm pleased to announce the release of proto-lens-0.4.0.0.  The library provides an API for protocol buffers, a language-independent binary file format.  Cabal and Stack projects can use proto-lens to automatically generate Haskell source bindings from the original protocol buffer specifications.

Some significant changes in this new release include:

- Simplifying the overloaded lens instances to improve readability and type error messages (along with the associated release of lens-labels-0.3.0.0)

- Switching to a custom class for default messages

- Hiding the internals of generated message types

- Making the Show instances more readable and concise

- Splitting the Cabal support into finer-grained packages, for better integration with Nix and Bazel

For general library documentation and tutorials:

For assistance in migrating from earlier versions:

For detailed changelogs:

Best,

-Judah