python-pillow fails to build with Python 3.11.0a2.

+ PYTHONPATH=/builddir/build/BUILD/Pillow-8.3.2/build/lib.linux-x86_64-3.11
+ make -C docs html BUILDDIR=_build_py3 SPHINXBUILD=sphinx-build-3.11
make: Entering directory '/builddir/build/BUILD/Pillow-8.3.2/docs'
sphinx-build-3.11 -b html --keep-going -d _build_py3/doctrees   . _build_py3/html
Running Sphinx v4.3.0
making output directory... done
loading intersphinx inventory from https://docs.python.org/3/objects.inv...
WARNING: failed to reach any of the inventories with the following issues:
intersphinx inventory 'https://docs.python.org/3/objects.inv' not fetchable due to <class 'requests.exceptions.ConnectionError'>: HTTPSConnectionPool(host='docs.python.org', port=443): Max retries exceeded with url: /3/objects.inv (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x7fa21a83ce80>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution'))
building [mo]: targets for 0 po files that are out of date
building [html]: targets for 93 source files that are out of date
updating environment: [new config] 93 added, 0 changed, 0 removed
reading sources... [  1%] PIL
reading sources... [  2%] about
reading sources... [  3%] deprecations
reading sources... [  4%] handbook/appendices
reading sources... [  5%] handbook/concepts
reading sources... [  6%] handbook/image-file-formats
reading sources... [  7%] handbook/index
reading sources... [  8%] handbook/overview
reading sources... [  9%] handbook/text-anchors
reading sources... [ 10%] handbook/tutorial
reading sources... [ 11%] handbook/writing-your-own-file-decoder
reading sources... [ 12%] index
reading sources... [ 13%] installation
reading sources... [ 15%] porting
reading sources... [ 16%] reference/ExifTags
reading sources... [ 17%] reference/Image
reading sources... [ 18%] reference/ImageChops
reading sources... [ 19%] reference/ImageCms
reading sources... [ 20%] reference/ImageColor
reading sources... [ 21%] reference/ImageDraw
reading sources... [ 22%] reference/ImageEnhance
reading sources... [ 23%] reference/ImageFile
reading sources... [ 24%] reference/ImageFilter
reading sources... [ 25%] reference/ImageFont
reading sources... [ 26%] reference/ImageGrab
reading sources... [ 27%] reference/ImageMath
reading sources... [ 29%] reference/ImageMorph
reading sources... [ 30%] reference/ImageOps
reading sources... [ 31%] reference/ImagePalette
reading sources... [ 32%] reference/ImagePath
reading sources... [ 33%] reference/ImageQt
make: *** [Makefile:45: html] Segmentation fault (core dumped)
make: Leaving directory '/builddir/build/BUILD/Pillow-8.3.2/docs'

https://docs.python.org/3.11/whatsnew/3.11.html

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.11/fedora-rawhide-x86_64/02992673-python-pillow/

For all our attempts to build python-pillow with Python 3.11, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.11/package/python-pillow/

Testing and mass rebuild of packages is happening in copr. You can follow these instructions to test locally in mock if your package builds with Python 3.11:
https://copr.fedorainfracloud.org/coprs/g/python/python3.11/

Let us know here if you have any questions.

Python 3.11 is planned to be included in Fedora 37. To make that update smoother, we're building Fedora packages with all pre-releases of Python 3.11.
A build failure prevents us from testing all dependent packages (transitive [Build]Requires), so if this package is required a lot, it's important for us to get it fixed soon.
We'd appreciate help from the people who know this package best, but if you don't want to work on this now, let us know so we can try to work around it on our side.