[bugsbunnyak]

Cython, not CPython. I took it as a given that it will run "pure" CPython-compatible code. I meant that the ability to JIT down Cython code (without the C translation step) would be a strong hook to get some people interested. There have been steps toward this in PyPy, and I expect it will happen in Numba sooner or later.

This would actually be even more compelling that I initially thought, since you pointed out that mypy run in stock CPython (I overlooked that and assumed it would have separate interpreter). All hypothetical, of course -- where's the github link?