How is "fairly close to deterministic" anywhere near good enough? LLMS aren't anywhere near cheap enough to do this either.

That said it's so trivial to do, why haven't you done that already?

I have actually, for my personal projects. I have been writing a library called "assume" where you can specify a type signature, give it a prompt, and it generates a function on the fly in the background with Claude Code, so you still write some code, but whenever you need a function you "assume" that such a function exists. I have a Java version that works right now and I will likely be pushing it within the next week.

But more generally, I actually have been building some CI stuff to automate how I'm saying.

I don't have much of a say how this is handled at work so they're just committing the generated code, but I actually am doing what I am talking about.