Python 3.11 Support

[blink1073]

I tried to enable Python 3.11 beta for jupyter_server, but got this error when building pyzmq:

             gcc -pthread -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -DHAVE_SYS_UN_H=1 -Ibundled/zeromq/include -Izmq/utils -I/opt/hostedtoolcache/Python/3.11.0-beta.1/x64/include/python3.11 -c zmq/backend/cython/_device.c -o build/temp.linux-x86_64-cpython-311/zmq/backend/cython/_device.o
            zmq/backend/cython/_device.c:217:12: fatal error: longintrepr.h: No such file or directory
              217 |   #include "longintrepr.h"
                  |            ^~~~~~~~~~~~~~~
            compilation terminated.
            error: command '/usr/bin/gcc' failed with exit code 1
            [end of output]

FWIW it looks like that file still exists

[minrk]

I've been waiting for Cython 0.29.29 to fix the 3.11 builds, but I'm going to make a prerelease with #1696 since that's been taking a while

[blink1073]

Ah, thanks! Yeah it makes sense for us to target Python 3.11 only in our prerelease job.

[minrk]

23.0.0b2 is up and should build on 3.11 (at least it does in CI here)

[blink1073]

In progress

[minrk]

Going to release 23.0 after #1700, now that Cython has a stable release with CPython 3.11 support. It'll still need to compile, but at least a stable release should work. cibuildwheel should have 3.11 support shortly, and I'll publish 3.11 wheels as soon as they are allowed.

[blink1073]

Great!

[minrk]

23.0 is up