I am considering Rust for some time now, but not having had a direct FFI was quite a bit of “friction”.
I am really glad you are creating a proper interface that also complies with the Rust philosophy.
I am looking forward to giving this a try …
Dan
p.s. for beginners like me in Rust an Foreign Predicate development, it would be great if you could have some tutorial style documentation to show how the FFI is used — the very simplest – to help get started –