Sorry if it gets a bit spammy in release thread . Making separate thread via https://github.com/jcrist/msgspec/issues/22 megspec author saids :
> This is not something I plan on supporting in a volunteer-only basis (if someone wanted to pay for this, I _might_ be willing to expand support). > > A few reasons: > > * `msgspec` is heavily tied to the CPython c-api for performance. PyPy does support a subset of the CPython c-api, but it does so in a way that is not very performant, and isn't 100% compatible. We _could_ add shims everywhere that's needed to make `msgspec` PyPy compatible, but that would muddy up the code, increasing our maintenance burden. > * Due to how PyPy's c-api layer works, performance on PyPy would be worse than on CPython. Whether this matters is application dependent. > * CPython is getting faster, reducing the advantages of PyPy > * Other "fast" libraries (e.g. asyncpg, orjson, ...) also don't support PyPy, and people generally seem fine with that. Some of the author's claims seem to be outdated. Since information regarding pypy is a bit outdated can you chime in a bit. For example > Due to how PyPy's c-api layer works, performance on PyPy would be worse than on CPython. Whether this matters is application dependent. I think that has improved a lot in the past year right? > PyPy does support a subset of the CPython c-api, b If we know which parts are missing , can those be supported by pypy? Regards, Phyo. On Sat, Jun 17, 2023 at 3:20 PM Phyo Arkar Lwin <phyo...@hexcode.tech> wrote: > Unfortunately https://github.com/jcrist/msgspec/issues/22 , it dosen't > support pypy. > > On Sat, Jun 17, 2023 at 2:56 PM Phyo Arkar Lwin <phyo...@hexcode.tech> > wrote: > >> I had tried , and it fails at msgspec dependency - which is build using >> gcc . I had opened a bug in their repo but it is working fine on cpython. >> >> https://github.com/jcrist/msgspec/issues/443 >> >> On Fri, Jun 16, 2023 at 3:43 PM Phyo Arkar Lwin <phyo...@hexcode.tech> >> wrote: >> >>> Thanks a lot , i haven't tried with pypy with litestar 2.0-dev which we >>> have moved to msgpack. >>> I will test it this evening and let you know. >>> >>> On Fri, Jun 16, 2023 at 3:26 PM Matti Picus <matti.pi...@gmail.com> >>> wrote: >>> >>>> On 16/6/23 09:50, Phyo Arkar Lwin wrote: >>>> >>>> > Hi guys , grats! >>>> > Long time i haven't use pypy. Question , does pypy support pyo3 now ? >>>> > There are a lot of rust-python binded libs now and i cannot use them >>>> > , when i tried last year. >>>> > I am contribution to development of litestar framework which use >>>> > rusted python libs , which i coin't get pypy to run with it. >>>> > >>>> > Looking forward to use pypy again and we are going to get into tech >>>> > empower benchmarks . >>>> > >>>> > Regards >>>> > >>>> > Phyo. >>>> >>>> >>>> There is support in PyO3 for PyPy. Cryptography uses PyO3 and ships a >>>> PyPy wheel. Perhaps a github issue on the relevant project's repo would >>>> be a better place to discuss this. >>>> >>>> >>>> I see this litestar issue [0] points to orjson, which led me to this >>>> issue in orjson [1], which was closed by adding this to their FAQ [2]: >>>> "Will it support PyPy? Probably not." On the other hand, taht was three >>>> years ago and the maintainer did express a willingness for other >>>> contributors to work on support for PyPy. Do you know what exactly >>>> doesn't work and what is the failure? I see there is support in >>>> litestar >>>> for using alternative json libraries, and truthfully PyPy has a pretty >>>> good reader built in, and PyPy works best when it does not have to call >>>> out to non-python modules. >>>> >>>> >>>> Matti >>>> >>>> [0] https://github.com/litestar-org/litestar/issues/851 >>>> >>>> [1] https://github.com/ijl/orjson/issues/90 >>>> >>>> [2] https://github.com/ijl/orjson#will-it-support-pypy >>>> >>>> _______________________________________________ >>>> pypy-dev mailing list -- pypy-dev@python.org >>>> To unsubscribe send an email to pypy-dev-le...@python.org >>>> https://mail.python.org/mailman3/lists/pypy-dev.python.org/ >>>> Member address: phyo.arkarl...@gmail.com >>>> >>>
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