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Suggest to sign the release commit itself (to keep us in sync with the Handbook; https://handbook.gnome.org/maintainers/making-a-release.html); and allow `git tag -s` if `git evtag` is not available (also as per the Handbook). Signed-off-by: Philip Withnall <pwithnall@gnome.org> Fixes: #3424
107 lines
4.4 KiB
Markdown
107 lines
4.4 KiB
Markdown
Making a release
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===
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When to make a release
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---
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Releases are made on a schedule determined in the [roadmap](./roadmap.md). Each
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release corresponds to a [GitLab milestone](https://gitlab.gnome.org/GNOME/glib/-/milestones).
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There is usually some scope to change a release date by plus or minus a week, to
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allow specific merge requests to land if they are deemed as more important to
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release sooner rather than waiting until the next scheduled release. However,
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there is always another release, and releasing on time is more important than
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releasing with everything landed. Releasing on time allows distributors to
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schedule their packaging work efficiently.
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Maintainers should take it in turns to make releases so that the load is spread
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out evenly and every maintainer is practiced in the process.
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How to make a release
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---
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Broadly, GLib follows the same process as [every other GNOME
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module](https://handbook.gnome.org/maintainers/making-a-release.html).
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These instructions use the following variables:
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- `new_version`: the version number of the release you are making, for example `2.73.1`
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- `previous_version`: the version number of the most-recently released version in the same release series, for example `2.73.0`
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- `branch`: the branch which the release is based on, for example `glib-2-72` or `main`
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Make sure your repository is up to date and doesn’t contain local changes:
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```sh
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git pull
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git status
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```
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Check the version in `meson.build` is correct for this release.
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Download
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[gitlab-changelog](https://gitlab.gnome.org/pwithnall/gitlab-changelog) and use
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it to write a `NEWS` entry:
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```sh
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gitlab-changelog.py GNOME/glib ${previous_version}..
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```
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Copy this into `NEWS`, and manually write some highlights of the fixed bugs as
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bullet points at the top. Most changes won’t need to be highlighted — only the
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ones which add APIs, change dependencies or packaging requirements, or fix
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impactful bugs which might affect distros’ decisions of how to prioritise the
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GLib release or how urgent to mark it as.
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You can get review of your `NEWS` changes from other co-maintainers if you wish.
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Commit the release:
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```sh
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git add -p
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git commit -s -m "${new_version}" --gpg-sign
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```
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Test build the release tarball:
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```sh
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meson dist -C build/
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```
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Tag, sign and push the release, using `${new_version}` as the tag message (see below for information about `git evtag`):
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```sh
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git evtag sign ${new_version}
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git push --atomic origin ${branch} ${new_version}
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```
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You will need to **temporarily** allow maintainers to push to the `main` branch on https://gitlab.gnome.org/GNOME/glib/-/settings/repository. To use a specific key add an option `-u ${keyid|email}` after the `sign` argument.
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The `dist-job` CI job will be triggered and will build and upload the final release archive.
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Add the release notes to GitLab and close the milestone:
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- Go to https://gitlab.gnome.org/GNOME/glib/-/releases/${new_version}/edit
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and upload the release notes for the new release from the `NEWS` file
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- Then link the milestone to it, then list the new release tarball and
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`sha256sum` file in the ‘Release Assets’ section as the ‘Other’ types.
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Get the file links from https://download.gnome.org/sources/glib/ and
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name them ‘Release archive’ and ‘Release archive checksum’
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- Go to https://gitlab.gnome.org/GNOME/glib/-/milestones/
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choose the milestone and close it, as all issues and merge requests tagged
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for this release should now be complete
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`git-evtag`
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---
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Releases should be done with `git evtag` rather than `git tag -s`, as it provides
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stronger security guarantees. See
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[its documentation](https://github.com/cgwalters/git-evtag) for more details.
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In particular, it calculates its checksum over all blobs reachable from the tag,
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including submodules; and uses a stronger checksum than SHA-1.
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`git tag -a` must not be used. Releases must be cryptographically signed to
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prove that they were made by a maintainer and have not been modified since
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release.
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You will need a GPG key for this, ideally which has been signed by others so
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that it can be verified as being yours. However, even if your GPG key is
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unsigned, using `git evtag` is still beneficial over using `git tag`.
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It is possible to use an SSH key rather than a GPG key — git supports both,
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although GitLab currently does not support verifying signatures by SSH keys.
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See [the GNOME Handbook](https://handbook.gnome.org/maintainers/signing-releases.html)
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for further information about release signing.
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