[jeremyjh]

Google called Go a "systems language". I agree its not the right term, but people do use it to describe a language used in infrastructure software like Docker or Kubernetes.

To me it makes a lot of sense as a starting point. The world does not need another Rust since we have a perfectly good one. People who like Rust's type system but don't care to think about ownership when writing application code, and who appreciate the language asyncing all the things invisibly have plenty to like here.

I do agree though any serious language MUST have an FFI capability, and macros or at least some form metaprogramming of seem like tablestakes. Green threads are not impressive if they are not preemptive. But its not describing itself as finished, its 0.19. Rust looked completely different at that stage in its development - I think it still had green threads itself at that point.

[librasteve]

does rust have FFI, then? (aka stable ABI)

[jeremyjh]

It can export a stable C ABI. Most languages can - is there any language that has a different stable ABI?

What I was talking about though, was calling into C APIs through FFI, which pretty much every language except Gossamer can do.