Releases

The latest stable release of vg can always be found at: https://github.com/vgteam/vg/releases.

Release schedule

vg aims to make a new release available every six weeks.

The next release, 1.44.0, is scheduled for October 10, 2022.

• Release Issue
• Release Milestone
• Draft Changelog

Versioning

vg currently does not implement semantic versioning. We do try to minimize breaking changes but there are no guarantees in place.

We do try to maintain a semantic-like naming scheme for releases (e.g. the major release after 1.7.0 is 1.8.0).

Docker

The vgteam docker register also receives a new docker image when a release is cut. These live at quay.io/vgteam/vg.

Before a release

1. Check that all unit and integration tests (both Travis and GitLab) have been ran.
2. Make note of any breaking changes (e.g. deprecated functions, new submodules, additional dependencies, etc) in the release issue.

Release process

To cut a new release:

1. Create a new release on Github
   1. Look up the next scheduled codename in version.cpp. If we have run to the end of the list of codenames, quickly PR some more to master.
   2. Tag it vX.Y.Z
   3. Title it vg X.Y.Z - Codename Here
   4. Mark it as a prerelease
   5. Publish it (which tags the commit and kicks off the Docker build on Quay)
2. Produce a buildable source tarball, containing code for vg and all submodules, and upload it to the release.

   mkdir source-tarball
   cd source-tarball
   git clone --recursive https://github.com/vgteam/vg.git
   cd vg
   git fetch --tags origin
   LATEST_TAG="$(git describe --tags `git rev-list --tags --max-count=1`)"
   git checkout "${LATEST_TAG}"
   git submodule update --init --recursive
   make include/vg_git_version.hpp
   rm -Rf .git
   find deps -name ".git" -exec rm -Rf "{}" \;
   cd ..
   mv vg "vg-${LATEST_TAG}"
   tar -czf "vg-${LATEST_TAG}.tar.gz" "vg-${LATEST_TAG}"
   rm -Rf "vg-${LATEST_TAG}"
   

3. Build and upload a static Linux binary (/bin/vg file) for the release (Mac OS X can't build static binaries.)

   cd vg
   git remote add upstream https://github.com/vgteam/vg.git || true
   git fetch --tags upstream
   LATEST_TAG="$(git describe --tags `git rev-list --tags --max-count=1`)"
   git checkout "${LATEST_TAG}"
   git submodule sync
   git submodule update --init --recursive
   rm -f lib/libsdsl.a
   sed -i s/march=native/march=nehalem/ deps/sdsl-lite/CMakeLists.txt
   locate libz.a || (sudo apt-get update && make get-deps)
   CXXFLAGS=" -march=nehalem " make -j8 static
   strip -d bin/vg
   bin/vg test
   

4. In the new release:
   1. Copy-paste the description of the previous release.
   2. Edit the links and Docker container names in the description to point to the new release
   3. Insert changes from the draft changelog
   4. List any new dependencies
   5. List any updated, moved, new, or removed submodules It may help to consult the log of commits since the last release, or to use a command like git diff v1.43.0..v1.44.0 deps/.
5. Clear the draft changelog for the next release
6. Create a milestone for the next release here, named vX.Y+1.Z, due in 6 weeks.
7. Create an issue Release vg vX.Y+1.Z for the next release on the Github issues page, using the checklist template under the Release process heading on this wiki page.
   1. Assign it to the milestone.
8. Update this wiki page with the next release version, date, issue, and milestone.
9. After this PR is in, Gitlab should be responsible for building multi-arch (ARM and x86) Docker releases. Make sure that the production-build-job on Gitlab succeeded. If something went wrong, you can build and push the container manually for your current architecture only:

   VG_VERSION="vX.Y.Z"
   
   git clone --recursive https://github.com/vgteam/vg.git
   cd vg
   git checkout ${VG_VERSION}
   git submodule sync
   git submodule update --init --recursive
   make include/vg_git_version.hpp
   docker pull mirror.gcr.io/library/ubuntu:20.04
   docker build --target run -t quay.io/vgteam/vg:${VG_VERSION} -f Dockerfile .
   docker build --target test -f Dockerfile .
   
   docker logout quay.io
   docker login quay.io
   docker push quay.io/vgteam/vg:${VG_VERSION}
   docker logout quay.io
   

   See also this issue for building multi-arch Docker images manually.
10. Edit the release and mark it as no longer a pre-release, to make it the latest stable release.
11. Contact Rose Miyatsu at UCSC by e-mail to promote the release. Send a couple sentences about the milestones reached in the release, a link to the release on Github, and the vg logo or any more relevant image available. Include these relevant Twitters: @BenedictPaten @erikgarrison @jeizenga @jltsiren @amnovak @JMonlong @glenn_hickey
12. Close the previous release issue, and the previous release milestone in the milestone list.

References

• Information on tag finding with Git