The original idea was to experiment with Zig + Raylib, eventually we wrote a small server in Erlang as well. We started by first interacting with Erlang via its C bindings, but this eventually led to some of us to prototyping our own tooling to better integrate Zig types with Erlang, we called such tool "zerl" as its avaliable here https://github.com/dont-rely-on-nulls/zerl.
Most of the developers are NixOS users, so the tooling heavily relies on Nix as well, including a Postgres running our devshell as well.