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RELEASING.md

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Release Checklist

Main Release

Released quarterly on the first day of January, April, July, October.

    PIL/__init__.py setup.py _imaging.c appveyor.yml
  • 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 2.9.x
    $ git tag 2.9.0
    $ git push --all
    $ git push --tags
  • Create and upload source distributions e.g.:
    $ make sdist
    $ make upload

Point Release

Released as needed for security, installation or critical bug fixes.

  • Make necessary changes in master branch.
  • Update CHANGES.rst.
  • Cherry pick individual commits from master branch to release branch e.g. 2.9.x.
  • Check Travis CI to confirm passing tests in release branch e.g. 2.9.x.
  • Checkout release branch e.g.:
    git checkout -t remotes/origin/2.9.x
    PIL/__init__.py
    setup.py
    _imaging.c
    appveyor.yml
  • Run pre-release check via make release-test.
  • Create tag for release e.g.:
    $ git tag 2.9.1
    $ git push --tags
  • Create and upload source distributions e.g.:
    $ make sdistup

Embargoed Release

Released as needed privately to individual vendors for critical security-related bug fixes.

  • Prepare patch for all versions that will get a fix. Test against local installations.
  • Commit against master, cherry pick to affected release branches.
  • Run local test matrix on each release & Python version.
  • Privately send to distros.
  • Run pre-release check via make release-test
  • Amend any commits with the CVE #
  • On release date, tag and push to GitHub.
    git checkout 2.5.x
    git tag 2.5.3
    git push origin 2.5.x
    git push origin --tags
  • Create and upload source distributions e.g.:
    $ make sdistup

Binary Distributions

Windows

  • Contact @cgohlke for Windows binaries via release ticket e.g. python-pillow#1174.
  • Download and extract tarball from @cgohlke and twine upload *.

OS X

    $ git checkout https://github.com/python-pillow/pillow-wheels
    $ cd pillow-wheels
    $ git submodule init
    $ git submodule update
    $ cd Pillow
    $ git fetch --all
    $ git commit -a -m "Pillow -> 2.9.0"
    $ git push

Linux

Publicize Release

Documentation