The goal of this section is to make sure that the icalendar library receives a clear maintenance structure with it that is transparent.


Currently, the maintainers are

Maintainers need this:

  • Admin access to the repository.

    These can be enabled by a current maintainer or an GitHub organisation administrator in the settings.

  • Maintainer or Owner access to the PyPI project.

    The new maintainer needs a PyPI account for this with Two Factor Authentication (2FA) enabled because icalendar is a critical project on PyPI. The access can be given in the collaboration Section on PyPI.

  • Maintainer access to the Read The Docs project.

    This can be given by existing maintainers listed on the project’s page. TODO: link to the settings

  • PyPI environment access for GitHub Actions grant new releases from tags.

    This access can be granted in Settings → Environments → PyPI by adding the GitHub username to the list of “Required Reviewers”.


Collaborators are people with write access to the repository. As a collaborator, you can

  • merge Pull Requests,

  • initiate a new release, see below.

We want to have as many knowledgeable people with write access taking responsibility as possible for these reasons:

  • a constant flow of fixes and new features

  • better code review

  • lower bus factor and backup

  • future maintainers

Nobody should merge their own pull requests. If you like to review or merge pull requests of other people and you have shown that you know how to contribute, you can ask for becoming a collaborator or a maintainer asks you if you would like to become one.

New Releases

This explains how to create a new release on PyPI.

Since collaborators and maintainers have write access the the repository, they can start the release process. However, only people with PyPI environment access for GitHub Actions can approve an automated release to PyPI.

  1. Check that the CHANGES.rst is up to date with the latest merged pull requests and the version you want to release is correctly named.

  2. Change the __version__ variable in

    • the src/icalendar/ file and

    • in the docs/install.rst file (look for icalendar.__version__)

  3. Create a commit on the release branch (or equivalent) to release this version.

    git checkout master
    git pull
    git checkout -b release master
    git add CHANGES.rst src/icalendar/ docs/install.rst
    git commit -m"version 5.0.0"
  4. Push the commit and create a pull request Here is an example pull request #457.

    git push -u origin release
  5. See if the CI-tests are running on the pull request. If they are not running, no new release can be issued. If the tests are running, merge the pull request.

  6. Clean up behind you!

    git checkout master
    git pull
    git branch -d release
    git push -d origin release
  7. Create a tag for the release and see if the CI-tests are running.

    git checkout master
    git pull
    git tag v5.0.0
    git push upstream v5.0.0 # could be origin or whatever reference
  8. Once the tag is pushed and its CI-tests are passing, maintainers will get an e-mail:

    Subject: Deployment review in collective/icalendar
    tests: PyPI is waiting for your review
  9. If the release is approved by a maintainer. It will be pushed to PyPI. If that happens, notify the issues that were fixed about this release.

  10. Copy this to the start of CHANGES.rst:

    5.0.2 (unreleased)
    Minor changes:
    - ...
    Breaking changes:
    - ...
    New features:
    - ...
    Bug fixes:
    - ...
  11. Push the new CHANGELOG so it is used for future changes.

git checkout master
git pull
git add CHANGES.rst
git commit -m"Add new CHANGELOG section for future release

git push upstream master # could be origin or whatever reference