I am surprised by this take, honestly.

We're a Haskell shop (and have been for over 10 years now) and are finding agentic development with Haskell to work pretty damn well.

Cold compile times in Haskell are painful indeed. Our development practices don't really cause us to do that much - even with agents.

It's unclear to me if the development practices at Scarf that cause them to hit this pain often are worth it if it means giving up Haskell because the compile times are too bad. Maybe they are, but I don't think so.