*** This bug is a duplicate of bug 2061175 ***
https://bugs.launchpad.net/bugs/2061175
Public bug reported:
As of right now, https://ubuntu-archive-team.ubuntu.com/nbs.html still
has a very long list of packages that need cleaned up before we release
24.04 LTS in 2 weeks, and none of these packages are considered
candidates for removal yet due to reverse-dependencies.
Most of these reverse-dependencies are amd64-only dependencies on
pre-t64 library packages, due to the fast and highly-parallelized
rebuild of packages in response to xz-utils.
The good news is that, because these libraries are ABI-compatible on
amd64 and declare so via Provides:, the amd64 packages are not
uninstallable if we remove these libraries.
The bad news is, on upgrade from prior releases, apt will not know to
replace the non-t64 library with the t64 library if the user has no
packages installed that depend on the t64 library name; leaving them
islanded on library versions that are installable and compatible, but
not security supported in 24.04.
In order to handle this without doing no-change rebuilds of all of those
reverse-dependencies (which we simply do not have time for before
release), Julian points out that it's possible for us to quirk things to
ensure the libraries are swapped on upgrade:
- for each installed package
- if the package is no longer available, and there is a package which
Replaces+Provides+(Conflicts|Breaks) that package, mark it for install
this should handle all of the t64 library transitions, and should also
be safe against accidentally switching users to a different
implementation of a package than the one they want to keep.
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Critical
Assignee: Nick Rosbrook (enr0n)
Status: Triaged
** Affects: ubuntu-release-upgrader (Ubuntu Noble)
Importance: Critical
Assignee: Nick Rosbrook (enr0n)
Status: Triaged
** Tags: fr-7432
** Changed in: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided => Critical
** Changed in: ubuntu-release-upgrader (Ubuntu)
Assignee: (unassigned) => Nick Rosbrook (enr0n)
** Tags added: fr-7432
** Changed in: ubuntu-release-upgrader (Ubuntu)
Status: New => Triaged
** Also affects: ubuntu-release-upgrader (Ubuntu Noble)
Importance: Critical
Assignee: Nick Rosbrook (enr0n)
Status: Triaged
** This bug has been marked a duplicate of bug 2061175
Handle (t64) package replacements
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https://bugs.launchpad.net/bugs/2061190
Title:
quirk needed for t64 library transitions in 24.04
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