> I've always wondered why the "color" of a function can't be a property of its call site instead of its definition. That would completely solve this problem - you declare your functions once, colorlessly, and then can invoke them as async anywhere you want.
If you have a non-joke type system (which is to say, Haskell or Scala) you can. I do it all the time. But you need HKT and in Rust each baby step towards that is an RFC buried under a mountain of discussion.
