[didip]

wow, that would be a big shame. I hope many of the useful learnings are already ported to CPython.

[mattip]

- The pure python repl started off in PyPy, although a lot of work was done to make it ready for prime time by the COython core devs - The lessons from HPy are slowly making their way into CPython, see https://github.com/py-ni - There were many fruitful interactions in fixing subtle bugs in CPython that stemmed from testing the stdlib on an alternative implementation

And more

[mkl]

Almost none of it will have been ported to CPython, as it's a completely different approach.

[skissane]

I really like PyPy’s approach of using a Python dialect (RPython) as the implementation language, instead of C. From a conceptual perspective, it is much more elegant. And there are other C-like Python dialects now too - Cython, mypy’s mypyc. It would be a shame if PyPy dies.