I feel strongly that this is underrated. Basically all compilers should be multi-lingual. Especially, rustc given its abilities with the borrow checker. Ideall

I feel strongly that this is underrated. Basically all compilers should be multi-lingual. Especially, rustc given its abilities with the borrow checker. Ideally (within reason for maintenance reasons), even parsers as “plugins”. Still building the same HIR (or AST if applicable) within rustc, but with different parsers. I’d love to see lot of experiments with Rust syntax in the vein of how CoffeeScript inspired the future of JavaScript. But still getting all the benefits of incremental compilation, cargo, etc.