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Re: [Python] pypy3 integration

From: Jakub Kądziołka
Subject: Re: [Python] pypy3 integration
Date: Mon, 20 Jul 2020 21:42:54 +0200

On Sun, Jul 19, 2020 at 10:27:14AM +0200, Lars-Dominik Braun wrote:
> Hi,
> I’ve been looking into integrating pypy3 (a JIT Python 3 implementation)
> tighter into guix. Right now we have a package, but it’s not that
> useful, because there are no pypy3-* libraries.

pypy3 works somewhat well for me already in this regard:

~$ genv --pure --ad-hoc pypy3 python-sympy python -- pypy3
Python 3.6.9 (?, Jan 01 1970, 00:00:00)
[PyPy 7.3.1 with GCC 7.5.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>> import sympy
>>>> sympy.isprime(694201337)

The `python' package needs to be included in the environment so that
PYTHONPATH gets set, but apart from that, the normal python-prefixed
packages seem to work with pypy. At least, for a sample size of 1 ;)

I suppose it could be worth it to precompile the packages for use in
pypy too, though. I'm not sure what's the best way of solving this. Just
creating separate pypy3-* packages has the big drawback that if you use
python-* instead, you silently get worse loading performance.


Jakub Kądziołka

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