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> Do they just philosophically not agree with PyPy or is it just disinterest?

I think Guido wants the reference implementation to have a simple and straightforward codebase, a JIT is anything but that.

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And that would be fine, and my mind goes to similar examples like Lua where the reference and the JIT versions co-exist but PyPy has not had the impact that LuaJIT has had (for example) on the LUA community.

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