Doing a release

Doing a release of cryptography requires a few steps.

Verifying and upgrading OpenSSL version

The release process uses a static build for Windows and OS X wheels. Check that the Windows and OS X Jenkins builders have the latest version of OpenSSL installed before performing the release. If they do not:

Upgrading Windows

Run the openssl-release Jenkins job, then copy the resulting artifacts to the Windows builders and unzip them in the root of the file system.

Upgrading OS X

brew update and then brew upgrade openssl --universal --build-bottle to build a universal library (32-bit and 64-bit) compatible with all Intel Macs. This can be confirmed by using lipo -info /usr/local/opt/openssl/lib/libssl.dylib to see the available architectures.

Bumping the version number

The next step in doing a release is bumping the version number in the software.

  • Update the version number in src/cryptography/__about__.py.
  • Update the version number in vectors/cryptography_vectors/__about__.py.
  • Set the release date in the Changelog.
  • Do a commit indicating this.
  • Send a pull request with this.
  • Wait for it to be merged.

Performing the release

The commit that merged the version number bump is now the official release commit for this release. You will need to have gpg installed and a gpg key in order to do a release. Once this has happened:

  • Run invoke release {version}.

The release should now be available on PyPI and a tag should be available in the repository.

Verifying the release

You should verify that pip install cryptography works correctly:

>>> import cryptography
>>> cryptography.__version__
'...'
>>> import cryptography_vectors
>>> cryptography_vectors.__version__
'...'

Verify that this is the version you just released.

For the Windows wheels check the builds for the cryptography-wheel-builder job and verify that the final output for each build shows it loaded and linked the expected OpenSSL version.

Post-release tasks

  • Update the version number to the next major (e.g. 0.5.dev1) in cryptography/__about__.py and vectors/cryptography_vectors/__about__.py.
  • Close the milestone for the previous release on GitHub.
  • Add new Changelog entry with next version and note that it is under active development
  • Send a pull request with these items
  • Check for any outstanding code undergoing a deprecation cycle by looking in cryptography.utils for DeprecatedIn** definitions. If any exist open a ticket to increment them for the next release.
  • Send an email to the mailing list and python-announce announcing the release.