If this were me I’d evaluate the robustness of the client libraries. Is the rust version more feature complete? Would you be the one rolling the elixir version from scratch?
One recent run in I had with this was parsing mp3 id3 tags. There are a few Elixir libraries and one that marshalls to Rust. The rust version takes more to compile and requires some extra hoops but the underlying library is more feature complete than a few of the Elixir versions. I mostly want to grab something and go, especially at the prototype phase I was in. I never strive for dependency-free applications, I have to be reeeallly convinced to roll my own anything. That’s usually a last resort.
If either library saw feature parity and very active code bases I’d choose always Elixir. I’ll generally have an easier experience based on everyone else’s recommendations.
