This is the ghost library pattern: provide the spec and tests that verify against it, let the user generate their own version and whatever language or ecosystem they want.
I will soon release a ghost library of my own: Cantrip, a spellbook for summoning entities from language
I've never seen a software project say "do NOT use this, please go build your own, here's a prompt" pic.twitter.com/RGdjvmZFYQ
— Matt Popovich (@mpopv) March 4, 2026