14:27 <ctismer> ronan: Hi. I have worked a lot on type creation, and my modified version of PyType_FromSpec creates the correct types now.

14:30 <ctismer> ronan: Unfortunately, it then crashes immediately when the function `type_new` is called with PySide types. I have a minimum example which shows that things work with Python enums, but crash badly with PySide enums (as any other PySide type as well, but enums are very simple).

14:37 <ctismer> ronan: A minimum example https://www.irccloud.com/pastebin/aJMoKWfS/crash_pypy.py

14:38 <ctismer> ronan: This is the outcome https://www.irccloud.com/pastebin/5eoskXry/result.txt

15:22 <ronan> ctismer: it lokks li

15:22 <ronan> ctismer: it looks like something, ObjectType?, has a tp_itemsize but no __len__

15:32 <ctismer> ronan: No, a simple type spec https://www.irccloud.com/pastebin/p4tazbGc/sbkenum.cpp

15:34 <ctismer> ronan: And here the instance type https://www.irccloud.com/pastebin/Eucu6HgG/sbkenum.cpp

15:34 <ronan> ctismer: that spec has .itemsize=sizeof(PyMemberDef)

15:36 <ctismer> ronan: Ah, I'm blindet 🤪 Thanks, I'll try immediately

15:37 <ctismer> ronan: so the meta type needs a len

16:08 <ctismer> ronan: may I hug you? This is such an improvement 🤗

16:18 <LarstiQ> yay! :)

16:18 <LarstiQ> ctismer: does this now mean PySide completely works on pypy? ;)

16:21 <ctismer> LarstiQ: A few things work. At least the inheritance is now ok. A lot of things don't work, yet.

16:23 <ctismer> LarstiQ: I tried (whatelse?) `examples//corelib/threads/mandelbrot.py` and that computes but shows an empty picture. But no segfault any longer 🤩

16:25 <ctismer> LarstiQ: I'd say, the real work is starting now.

16:44 <ctismer> ronan: I've set itemsize to zero and things work. But is this right? `PyType_Type` has `sizeof(PyMemberDef)`, but `type` has no `__len__`, either?

16:45 <ctismer> ronan: (but is ofc. no heaptype)

16:46 <LarstiQ> ctismer: I get what you're saying, but the work so far has been rather real too :)

16:54 <ctismer> LarstiQ: Yeah, well. At least it seems to be more straightforward now with very few crashes. When Mandelbrot works, I will take a pause ⛱️

16:55 <ronan> ctismer: it's correct for pypy, which basically ignores tp_basicsize and tp_itemsize when allocating types, but I guess not for CPython

16:57 <ctismer> ronan: So I should do an ifdef here? How comes that I did not know that? 😂

17:06 <ronan> ctismer: yes, I think you need an ifdef