07:49 <LarstiQ> huh, interesting crash in https://github.com/pyqtgraph/pyqtgraph/issues/2270#issuecomment-1107641919 on `class B(A, QGraphicsWidget): pass`

08:19 <cfbolz> LarstiQ: ah

09:38 <arigato> cfbolz: re refcounting, maybe we should get rid of that

09:38 <cfbolz> arigato: yes, I was thinking that too

09:38 <cfbolz> arigato: re gecrefs, I went and tried to do that with fixed and var-sized lists, it seems to work nicely

09:39 <arigato> I guess so

09:40 <arigato> many tests fail, though, because they rely on refcounting, right?

09:40 <cfbolz> no, just a handfull

09:40 <cfbolz> most rtyper tests are fine

09:40 <cfbolz> and pypy-c-jit works nicely

09:41 <arigato> OK

09:42 <cfbolz> arigato: I will try dicts next (we have 74 different ones)

09:48 <cfbolz> (including 3000 functions that operate on them, out of 40000. not sure that that's a quantity that matters)

11:22 <mattip> The geometric average speedup on speed.pypy.org went from ~4.5 to ~4.7. Nice

13:17 <arigato> mattip: yay :-)

13:33 <antocuni> so, tonight I'm going to the "Open Source Hack Night" organized by PyLadies Berlin

13:33 <antocuni> do we have any easy task for newcomers, in case anyone is interested in hacking at PyPy?

13:46 <cfbolz> antocuni: (semi-serious) start on 3.10?

13:47 <antocuni> I admit I'm not very up-to-date with PyPy development :)

13:47 <antocuni> what's the status w.r.t. CPython versions?

13:48 <cfbolz> we've done all 3.9, apart from frustrating tiny things

13:49 <antocuni> that's very good for 3.9, not so good for the hack night :)

13:50 <cfbolz> exactly

13:50 <cfbolz> hence my suggestion

13:50 <antocuni> I'm not sure that starting a brand new 3.10 branch is a good idea for tonight; we need to copy the 3.10 stdlib, fix the conflicts (if any), run tests and see what fails?

13:50 <Corbin> Are there any numpy/micronumpy tasks that are easy? I guess the low-hanging fruit's all gone.

13:50 <cfbolz> antocuni: simpler idea: backport this feature: https://peps.python.org/pep-0618/

13:51 <cfbolz> it's an extra optional argument to zip

13:51 <antocuni> this might be perfect!

13:52 <antocuni> we can do it in a branch of 3.9, and port it to 3.10 when it's time

13:52 <cfbolz> antocuni: yes, we have done several 3.x features like that

13:52 <cfbolz> because importing the stlib is very hard if you can't parse it, for example

13:53 <antocuni> do you mean that pypy 3.9 has features which on CPython are 3.10 only/

13:53 <antocuni> ?

13:53 <cfbolz> antocuni: no

13:54 <cfbolz> antocuni: but eg when I started the 3.9 branch: I branched 3.8, started working on that, imported the 3.9 stdlib *much* later

13:54 <antocuni> I see

13:54 <antocuni> makes sense

13:57 <cfbolz> antocuni: another feature that is a candidate is "or" on types: int | float

13:58 <antocuni> I didn't know about that, is there a PEP? I can't find it with a simple google

13:59 <cfbolz> https://peps.python.org/pep-0604/

14:00 <antocuni> thanks

14:00 <antocuni> ah, I though it was about doing things like 1 | 2.0

14:01 <cfbolz> it's weird typing stuff ;-)

14:01 <cfbolz> zip is much more real

14:01 <antocuni> agreed

14:01 <cfbolz> if you want to do it though: grep for genericalias on the 3.9 branch

14:01 <cfbolz> it's a similar feature for __getitem__ on types

14:02 <antocuni> to do e.g. list[int]?

14:02 <cfbolz> yes

14:02 <cfbolz> in cpython it's all done in C, in pypy mostly pure python

14:02 <cfbolz> apart from the actual __getitem__, but that calls out to pure python

14:06 <antocuni> I can't find the implementation though; grep genericalias shows only tests and cpyext stuff

14:06 <cfbolz> antocuni: lib_pypy/_pypy_generic_alias.py

14:07 <antocuni> thanks

14:07 <cfbolz> I suppose the Union stuff would go in the same file, which should then be renamed

14:09 <cfbolz> antocuni: btw, we already use the new parser and I mostly tried to use the 3.10 grammar in our 3.9. I just removed the pattern matching rules

14:09 <antocuni> I will keep it as the 2nd choice though, the zip thing is much easier to explain and to implement

14:09 <cfbolz> yes

14:10 <antocuni> moreover, we will need to do the usual heptapod dance before being able to push things :(