I wonder how the ecosystem will change once we have this. Would existing Erlang modules add support for records, or would we have to switch between records, maps, and tuples depending on what function we are using?

I wonder how it’ll work with Elixir’s structs too.

Everyone using the same data structure could be really valuable, hopefully it unifies us all somewhat.

Wishful thinking, but using Ash directly from Lustre w/o a JSON bridge would be awesome - as far as I understand, currently there is exactly this mismatch between essentially maps/structs in Elixir and records in Gleam that make this prohibitively difficult.

This very much. Gleam is a really pleasant language to use but I can’t build Ash in gleam using the same patterns and I can’t use Ash from gleam w/o a runtime translation cost so I’m kind of just waiting until that’s possible at that point.