Release Pillow 9.0.0 on January 2, 2022

[aclark4life]

Main Release

Released quarterly on January 2nd, April 1st, July 1st and October 15th.

• Open a release ticket e.g. Release Pillow 5.2.0 on July 1, 2018 #3154
• Develop and prepare release in main branch.
• Check GitHub Actions and AppVeyor to confirm passing tests in main branch.
• Check that all of the wheel builds Pillow Wheel Builder pass the tests in Travis CI and GitHub Actions.
• In compliance with PEP 440, update version identifier in src/PIL/_version.py
• Update CHANGES.rst.
• Run pre-release check via make release-test in a freshly cloned repo.
• Create branch and tag for release e.g.:

  git branch 9.0.x
  git tag 9.0.0
  git push --all
  git push --tags

• Create and check source distribution:

  make sdist
  twine check dist/*

• Create binary distributions
• Check and upload all binaries and source distributions e.g.:

  twine check dist/*
  twine upload dist/Pillow-9.0.0*

• Publish the release on GitHub
• In compliance with PEP 440, increment and append .dev0 to version identifier in src/PIL/_version.py

Binary Distributions

Windows

• Contact @cgohlke for Windows binaries via release ticket e.g. Release 2.9.0 on July 1, 2015 #1174.
• Download and extract tarball from @cgohlke and copy into dist/

Mac and Linux

• Use the Pillow Wheel Builder:

  git clone https://github.com/python-pillow/pillow-wheels
  cd pillow-wheels
  ./update-pillow-tag.sh [[release tag]]

• Download wheels from the Pillow Wheel Builder release
  and copy into dist/

Publicize Release

• Announce release availability via Twitter e.g. https://twitter.com/PythonPillow/status/1013789184354603010

Documentation

• Make sure the default version for Read the Docs is up-to-date with the release changes

Docker Images

• Update Pillow in the Docker Images repository

  git clone https://github.com/python-pillow/docker-images
  cd docker-images
  ./update-pillow-tag.sh [[release tag]]

[radarhere]

A note for when we request the Windows binaries - #5697 (comment) should now be fixed with the release of freetype 2.11.1.

[radarhere]

Ok, @cgohlke, could we kindly have the Windows binaries for 9.0.0?

[cgohlke]

Here you go.

[radarhere]

Thanks very much!

Released, and announced!

[h-vetinari]

Hey all, congratulations on the release! 🥳

I'm getting

    from PIL import Image
  File "D:\bld\pillow_1641174407982\_test_env\lib\site-packages\PIL\Image.py", line 93, in <module>
    "The _imaging extension was built for another version of Pillow or PIL:\n"
ImportError: The _imaging extension was built for another version of Pillow or PIL:
Core version: "9.0.0"
Pillow version: 9.0.0

in conda-forge/pillow-feedstock#104 for windows with cpython 3.7 & 3.8 (not for 3.9, 3.10 or pypy though), seems like an issue with some extra quotes? Should I raise an issue for that?

[radarhere]

Hi. Yes, a new issue would be helpful, thanks.

This would be connected to

Pillow/setup.py

Lines 843 to 850 in 05b6336

	if (
	sys.platform == "win32"
	and sys.version_info < (3, 9)
	and not (PLATFORM_PYPY or PLATFORM_MINGW)
	):
	defs.append(("PILLOW_VERSION", f'"\\"{PILLOW_VERSION}\\""'))
	else:
	defs.append(("PILLOW_VERSION", f'"{PILLOW_VERSION}"'))

I created a different PR to test this problem - conda-forge/pillow-feedstock#105. Like your PR, it also fails with Python 3.7 and 3.8 on Windows, so this isn't related to any change from this release.

[homm]

Pillow-SIMD 9.0.0.post0 released as well.
https://pypi.org/project/Pillow-SIMD/9.0.0.post0/