pyodide/docs/development/maintainers.md

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(maintainer-information)=
# Maintainer information
## Making a release
For branch organization we use a variation of the [GitHub
Flow](https://guides.github.com/introduction/flow/) with
the latest release branch named `stable` (due to ReadTheDocs constraints).
(making-major-release)=
### Making a major release
1. Make a new PR and for all occurrences of
`https://cdn.jsdelivr.net/pyodide/dev/full/` in `./docs/` replace `dev` with
the release version `vX.Y.Z` (note the presence of the leading `v`). This
also applies to `docs/conf.py`, but you should skip this file and
`docs/usage/downloading-and-deploying.md`.
2. Set the version in:
- `docs/project/about.md`,
- `setup.cfg`,
- `src/js/package.json`,
- `src/py/pyodide/__init__.py`,
- `src/py/setup.cfg`,
- `pyodide-build/setup.cfg`,
After this, try using `ripgrep` to make sure there are no extra old versions
lying around e.g., `rg -F "0.18"`, `rg -F dev0`, `rg -F dev.0`.
3. Make sure the change log is up-to-date.
- Indicate the release date in the change log.
- Generate the list of contributors for the release at the end of the
changelog entry with,
```bash
git shortlog -s LAST_TAG.. | cut -f2- | sort --ignore-case | tr '\n' ';' | sed 's/;/, /g;s/, $//' | fold -s
```
where `LAST_TAG` is the tag for the last release.
Merge the PR.
4. Assuming the upstream `stable` branch exists, rename it to a release branch
for the previous major version. For instance if last release was, `0.20.0`,
the corresponding release branch would be `0.20.X`,
```bash
git fetch upstream
git checkout stable
git checkout -b 0.20.X
git push upstream 0.20.X
git branch -D stable # delete locally
```
5. Create a tag `X.Y.Z` (without leading `v`) and push
it to upstream,
```bash
git tag X.Y.Z
git push upstream X.Y.Z
```
Create a new `stable` branch from this tag,
```bash
git checkout -b stable
git push upstream stable --force
```
Wait for the CI to pass and create the release on GitHub.
6. Release the Pyodide JavaScript package:
```bash
cd src/js
npm publish # Note: use "--tag next" for prereleases
npm dist-tag add pyodide@a.b.c next # Label this release as also the latest unstable release
```
7. Revert Step 1. and increment the version in `src/py/pyodide/__init__.py` to
the next version specified by Semantic Versioning.
### Making a minor release
For a minor release, commits need to be added to the `stable` branch, ideally via a PR.
This can be done with either,
- git cherry picking individual commits,
```bash
git checkout stable
git pull
git checkout -b backport-branch
git cherry-pick <commit-hash>
```
- or with interactive rebase,
```bash
git fetch upstream
git checkout stable
git pull
git checkout -b backport-branch
git rebase -i upstream/main
```
and indicate which commits to take from `main` in the UI.
Then follow steps 2, 3, and 6 from {ref}`making-major-release`.
### Making an alpha release
Follow steps 2, 6, 7, and 9 from {ref}`making-major-release`. Name the first
alpha release `x.x.xa1` and in subsequent alphas increment the final number. For
the npm package the alpha should have version in the format `x.x.x-alpha.1`. For
the node package make sure to use `npm publish --tag next` to avoid setting the
alpha version as the stable release.
If you accidentally publish the alpha release over the stable `latest` tag, you
can fix it with: `npm dist-tag add pyodide@a.b.c latest` where `a.b.c` should be
the latest stable version. Then use
`npm dist-tag add pyodide@a.b.c-alpha.d next` to set the `next` tag to point to the
just-published alpha release.
### Fixing documentation for a released version
Cherry pick the corresponding documentation commits to the `stable` branch. Use
`[skip ci]` in the commit message.