Since development on elixir-grpc has more or less effectively stopped, I’ve used grpcbox | Hex instead. While it’s a tad trickier to work with (given that it’s all Erlang), you can definitely have it interoperate with Elixir code provided that you generate the Erlang stubs. I’ve created an example repository that shows how that can be done rather naively by utilising an umbrella project here: GitHub - nathancyam/boxy: A project showing grpcbox and Elixir compatability · GitHub

If metrics are anything to go by, grpcbox seems to have more downloads if you take a look at the Hex.pm metrics, but since the elixir-grpc documentation actively encourages users to pull directly down from Github, it doesn’t account for much.

This library seems more maintanable than elixir-grpc. I think the best solution is to create wrapper documentation just like the telemetry module, as to avoid elixir wrappers that remain behind in implementation.

I wanted to work too on this library when I had free time. What you need to start with is to ask the maintainer what the actual state of library is, because there are some checked TODOS, however it is not very clear whether they were implemented or not.

On the other side, if you want help on the issues, please make sure the issues are formulated clearly with additional description on what needs to be done.