This is a bit of a tricky situation I think. Let me elaborate.
We allow new upstream releases for certain projects because of a certain trust
shift - for upstream projects that have a sufficient quality assurance story
and clear bugfix policy, we allow updating the whole version instead of
requiring testing of every single change separately. Basically this is this
section of the policy, even though it's a bit vague:
https://wiki.ubuntu.com/StableReleaseUpdates#New_upstream_microreleases
In this case, when the upstream branch of libreoffice is EOL and us
switching to an unofficial branch with fixes, I think we no longer fit
this policy. We can put certain level of trust to upstream developers
preparing upstream releases, by shifting trust to upstream we can skip
certain parts of our SRU review and verification, simply assuming that -
for instance - the bugfixes listed in the changes are accurate with
what's actually in the tarball. I don't think we can say the same thing
about a version that is officially EOL in the mind of upstream. We
certainly can't blindly trust what's in that codebase, and therefore
just running the usual 'autopkgtests' + usual test-case won't work from
the SRU perspective, sadly.
In this case, I think I only see two options:
a) Switching users of focal to a non-EOL version of libreoffice. This would of
course require much more testing (maybe even a call for testing from other
users), but as you already mentioned on IRC: there is risk that user extensions
would be broken by this. And I think regressing existing users might be a
breach of policy as well... so I'm not sure we can pull this off.
b) Cherry-picking *single fixes* from the aforementioned MIMO branch, each fix
having a separate test-case i.e. following the regular per-bugfix SRU policy.
I know this situation is not ideal, but I don't think we can
realistically do much more. We can pull in more SRU members for comment
though, maybe someone would have a better idea.
** Changed in: libreoffice (Ubuntu Focal)
Status: Triaged => Incomplete
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https://bugs.launchpad.net/bugs/1929999
Title:
[SRU] libreoffice 6.4.7.2.M3 for Focal
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