It seems it's not as close as I remembered it, this is the only mention of it I can find right now: https://doc.rust-lang.org/stable/reference/#what-the-reference-is-not
So basically the answer is "we'll get there eventually". I can understand it not being a huge priority, official specs are only useful if you want to have multiple compiler implementations, which I don't think is super important right now anyway.
I haven't heard about Rust working on an official spec, got a link?
It seems it's not as close as I remembered it, this is the only mention of it I can find right now: https://doc.rust-lang.org/stable/reference/#what-the-reference-is-not
So basically the answer is "we'll get there eventually". I can understand it not being a huge priority, official specs are only useful if you want to have multiple compiler implementations, which I don't think is super important right now anyway.