[chamomeal]

Not the person you're replying to, but have you tried TypedClojure? I've always thought clojure-with-types would literally be the perfect language, but I also read TypedClojure is more of a research project than a real language that you should use in prod.

[xoxolian]

No sorry, of the things I've listed, I'd never seen nor heard of a project that uses Typed Clojure, nor probably inheritance via dervied/isa?.

For static (partial) typing, I instead use Malli schemas. I do this for every larger Clojure program I make, because there's always something that needs paranoia, or it's handy to generate example data.