Release Procedure

Release Procedure

This document describes the procedure for preparing and publishing an umoci release. Note that in order for a release of umoci to be approved, it must follow the approval procedure described in


Before anything else, you must update the to match the release. This boils down to adding a new header underneath the “Unreleased” header so that all of the changes are listed as being part of the new release.

 ## [Unreleased]
+## [X.Y.Z] - 20YY-MM-DD
 - Changed FooBar to correctly Baz.

And then the [X.Y.Z] reference needs to be added and the [Unreleased] reference updated. These links just show the set of commits added between successive versions:


The changes to will be committed in the next section.

Pull Request

Releases need to be associated with a specific commit, with the release commit being voted on by the maintainers (as described in To prepare the pull request, the following steps are necessary:

% git branch release-X.Y.Z origin/master
% vi # make the changes outlined above
% echo "X.Y.Z" > VERSION
% git commit -asm "VERSION: release X.Y.Z" # this is the release commit
% echo "X.Y.Z+dev" > VERSION
% git commit -asm "VERSION: back to development"
% git push # ...

And then open a pull request with the release-X.Y.Z branch. If the release requires a formal vote, the vote motion must specify the release commit which is being considered (preferably both in the body and subject).

Release Notes

The release notes (as published on the releases page) are largely based on the contents of for the relevant release. However, any important information (such as deprecation warnings or security fixes) should be included in the release notes above the changelog.

In addition, the release notes should contain a list of the contributors to the release. The simplest way of doing this is to just use the author information from Git:

% git log --pretty=format:'%aN <%ae>' $1 | sort -u

Thus the final release notes should look something like the following:

**WARNING**: Feature FooBar is now considered deprecated and will be removed in
release X.Y.FOO.

 + Change FooBarBaz to support Xyz.
 * Update documentation of FooBar.
 - Remove broken XyzFoo implementation.

Thanks to all of the people who made this release possible:

 * Jane Citizen <>
 * Joe Citizen <>

Signed-off-by: [Your Name and Email Here]


All release tags must be signed by a maintainer, and annotated with the release notes which will be used on releases page. This can be done with git tag -as. The set of valid keys to sign releases and artefacts is maintained as part of this repository in the gpg-offline format.


Once a release has been approved and tagged, the only thing left is to create the set of release artefacts to attach to the release. This can be easily done with make release, which will run hack/ with the correct version information and the release artefacts will be in release/X.Y.Z.

Note that you may need to explicitly specify the correct GPG key to use to sign the artefacts, which can be done by specifying GPG_KEYID= during the make release invocation.