Thanks to thorough feedback from our community, we now have a reasonably comprehensive answer to the question of what 32-bit compatibility library packages are needed on x86 for Ubuntu 20.04.
https://discourse.ubuntu.com/t/community-process-for-32-bit-compatibility/12598/46 Some developers will have noticed changes this week to the behavior of focal builds in Launchpad. Out of 30,000 source packages in focal, there is now a whitelist of about 1,700 source packages which will trigger builds on i386 in Launchpad. This means that other packages which previously built on i386 will need to have the binaries from the old version of the package removed before they will be migratable from focal-proposed to focal. As a side note, the implementation of this also affects PPA builds, because the whitelist applies to the focal series as a whole. In general, you should not expect to need i386 builds of third-party packages in PPAs for focal either, given that i386 in focal exists solely for compatibility with legacy binary software. However, if you have a third-party package that you believe it's important to continue producing i386 binary builds of in Launchpad for Ubuntu 20.04, please contact the Ubuntu archive admins (ubuntu-rele...@lists.ubuntu.com, or #ubuntu-devel on freenode.net for best results), and we can evaluate including your PPA package in the whitelist. At the moment, I am doing some manual removals of the i386 binaries as I see them show up as blockers on https://people.canonical.com/~ubuntu-archive/proposed-migration/update_excuses.html and as I'm able to determine that the removals aren't going to cause near-term knock-on problems. But if some i386 binaries aren't being removed fast enough and this is blocking your work, feel free to reach out to an archive admin to ask for their removal. In the slightly less near term, the plan is to do a mass binary removal of all of the i386 binary packages in focal built from sources other than those in the whitelist. However, before pulling the trigger on this mass removal, there are some changes that should be landed to our autopkgtest infrastructure, so that we can continue to run autopkgtests for those remaining 1700 packages. In summary: the plan is not to retain the test dependencies of those 1700 packages on i386, but instead to cross-test the i386 libraries on an amd64 host, which ultimately means testing them in an environment that better models the expected real-world usage. The work is in progress for this change and I'm currently anticipating landing it next week. In the meantime, if you need any help getting packages migrating to the focal release from -proposed, please reach out on #ubuntu-release on IRC. Thanks, -- Steve Langasek Give me a lever long enough and a Free OS Debian Developer to set it on, and I can move the world. Ubuntu Developer https://www.debian.org/ slanga...@ubuntu.com vor...@debian.org
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