It's not like you can just "merge" pypy into python, they are totally different implementations. CPython is written in C and PyPy is written in RPython which is a subset of the python language that gets compiled, into into an interpreter with JIT support. You can actually write an interpreter for any language using RPython and their toolset, for example Ruby https://github.com/topazproject/topaz
Yes. I did come across:
https://github.com/topazproject/topaz
From: "When a Mouse Eats a Python: Smalltalk-style Development for Python and Ruby" https://2017.programming-conference.org/details/MoreVMs-2017...
See also: http://www.hpi.uni-potsdam.de/hirschfeld/publications/index....
But it seems abandoned?
I guess maybe maglev ruby on the gemstone platform does move the needle a bit closer:
Not unlike Topaz[0], a Ruby on RPython started in 2013 which has seen no activity in 3 years.
Ruby on PyPy already exists: https://github.com/topazproject/topaz
Performance is disappointing, though.
This is a great project but unfortunately it seems to be dead - no commits since August last year https://github.com/topazproject/topaz.