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RELEASING.md

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Releasing Tycho

This describes the steps to perform a release of Tycho:

  • Make sure all fixed issues and merged PRs have the correct milestone for this release, to finding PRs without milestone you can use the following filter is:pr is:merged no:milestone issues without milestone can be found with is:issue no:milestone is:closed
  • Prepare the release notes which should provide a quick overview of new features and bug fixes
  • When no more incoming change is expected for this release, create branch tycho-N.M.x (e.g. tycho-2.4.x) for upcoming release and push it to remote; this branch should remain frozen until the release, only major fixes for regressions could be merged in before release. Work can still happen regularly for the following version on the master branch.
  • Create release record on https://projects.eclipse.org/projects/technology.tycho projects.eclipse.org, link the N&N to https://github.com/eclipse-tycho/tycho/blob/[branch-name]/RELEASE_NOTES.md release notes]
  • Update the Jenkinsfile on the tycho-N.M.x and adjust the stage('Deploy Snapshot') to reference the new branch in the when conditional.
  • Update versions on master to future release with mvn org.eclipse.tycho:tycho-versions-plugin:set-version -DnewVersion=<NEXT_VERSION>-SNAPSHOT and push to remote
  • Announce the intent to release and request feedback about snapshots on the GitHub discussions:
Subject: Tycho <VERSION> release

We plan to release Tycho <VERSION> next week. For details of new features and bugfixes, see [release notes](https://github.com/eclipse-tycho/tycho/blob/tycho-x.y.z/RELEASE_NOTES.md).
Please help by testing the SNAPSHOTS build. To use it, change your tycho version to <VERSION>-SNAPSHOT and add the following snippet to your pom.

<pluginRepositories>
    <pluginRepository>
      <id>tycho-snapshots</id>
      <url>https://repo.eclipse.org/content/repositories/tycho-snapshots/</url>
    </pluginRepository>
</pluginRepositories>


We plan to promote this release in one week unless major regressions are found.

Regards,
Tycho team

... Wait until review date (usually a week later)...

  • make sure all tags are fetched with git fetch -t
  • Make sure you have everything setup (GPG installed!) for deploying to the Nexus OSS repository, see https://central.sonatype.org/pages/ossrh-guide.html guide
  • Add your credentials for server sonatype-nexus-staging in ~/.m2/settings.xml
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
   <!-- ... -->
   <servers>
    <server>
      <id>sonatype-nexus-staging</id>
      <username>mickael.istria</username>
      <password>securePassword</password> <!-- use `mvn --encrypt-password` to not store plain text -->
    </server>
    <!-- ... -->
   </servers>
</settings>
</source>
  • git fetch eclipse tycho-N.M.x && git checkout FETCH_HEAD to get the branch to be released
  • Update version to remove -SNAPSHOT with mvn org.eclipse.tycho:tycho-versions-plugin:set-version -DnewVersion=<VERSION>
  • Update versions in tycho-demo folder
  • git add * && git commit version change
  • Deploy to nexus staging repository (check that the correct pgp key is used and published to the key-servers eg. https://keys.openpgp.org/):
mvn clean deploy -Prelease -DskipTests -Dsource=8 -DjdetectJavaApiLink=false \
     -DforgeReleaseId=sonatype-nexus-staging \
     -DforgeReleaseUrl=https://oss.sonatype.org/service/local/staging/deploy/maven2/ \
     -Dgpg.keyname=<your e-mail of pgpg key>
  • In the meantime...
    • git fetch --all --tags
    • git tag tycho-<TYCHO_VERSION>
    • Find out who contributed to the release:
git log --pretty=format:%an tycho-<previousVersion>..tycho-<newVersion> | sort | uniq
git log --grep="Also-[bB]y:" tycho-<previousVersion>..tycho-<newVersion> | grep -i also-by | sed -e 's/.*Also-[bB]y:\s*\(.*\)/\1/' | sort | uniq
  • Find out who has sponsored something in this release:
is:closed is:issue label:sponsored milestone:<version mile stone> 

Subject: Tycho <VERSION> is released

Tycho <VERSION> has been released and is available from Maven Central repository.

🆕 https://github.com/eclipse-tycho/tycho/blob/master/RELEASE_NOTES.md#xyz
🏷️ https://github.com/eclipse-tycho/tycho/tree/tycho-x.y.z
👔 https://projects.eclipse.org/projects/technology.tycho/releases/x.y.z
🙏 contributors who contributed patches for this release:
    <contributors>
💰 we would like to also thank <list of sponsors> for sponsoring contributions in this release

and thanks to everyone who helped us with testing the snapshot version.

Regards,

 The Tycho Team
  • close the staging repository on https://oss.sonatype.org/#stagingRepositories
  • Wait until all checks are done (this takes some time, see Activity tab). If all checks have passed, release the repository.
  • Wait for artifacts to be available on Maven central, e.g. by looking at https://repo1.maven.org/maven2/org/eclipse/tycho/tycho-core/
  • push tag git push origin tycho-<TYCHO_VERSION>
  • Documentation
    • Generate site docs using mvn install site site:stage -DskipTests and check the result from target/staging seems viable.
    • Prepare documentation on the webite, using git repo https://git.eclipse.org/c/www.eclipse.org/tycho.git/ : copy the local site docs folders target/staging/sitedocs to the existing sitedocs folder and then submit as Gerrit review (don't merge yet)
  • Announce the release
    • Publish the draft release you made above. This will also send an email to watchers of the project.
    • Forward the above email to [email protected]
    • Add a link to the above release on the discussion started earlier.
    • Optionally, announce on other medias (Twitter)
  • Create, push and merge patch changing the bootstrap Tycho version for Tycho build (eg https://git.eclipse.org/r/c/tycho/org.eclipse.tycho/+/174964 )