[nextaccountic]

There's an API to call async code in a sync context, it's called block_on. You can just spawn threads and do your block_on on every async API you encounter and go on about your life. Pair it with a good mpsc library for inter thread channels (or just use the stdlib mpsc - even though it's slower and strictly worse than libs, it doesn't matter) and you are good to go

Likewise there's an API to call sync code in async context, it's spawn_blocking (or sometimes block_in_place but, stick with spawn_blocking)