I'm not sure if there's a better alternative, to be honest. Given how large a portion of the time compiler authors will be writing code for the compiler, many o

I'm not sure if there's a better alternative, to be honest. Given how large a portion of the time compiler authors will be writing code for the compiler, many of them might not spend any time working in the language they're designing if it isn't what the compiler itself is written in. If the people who maintained Rust spent all their time writing OCaml and little to none writing Rust, I think that would likely cause far more and worse blind spots than writing Rust all the time but only in a specific domain.