asdf was the closest to this, but the startup time is pretty bad (there is a 300ms+ delay) for apps. It is a giant hack but works well. But I hear about weird dependency issues all the time with Macs (both Intel and the newer Apple Silicon) with Erlang or Elixir.

I'm really excited for nix as true sandboxing would be great. Nix however I couldn't get working properly.. and I've been using Linux for almost 17 years.

Once the UX gets sorted, this is a game changer.