Hi Graham,

> > A possible way to reduce the friction introduced by a new glibc verison
> > would be to delay it until after Feature Freeze: fewer packages would
> > pick up the new symbols and thus wouldn't get blocked waiting for the
> > glibc rdeps autopkgtests to clear.
>
> Does it need to be after Feature Freeze?
>
> You could co-ordinate your upload with the release team such that it
> happens on the day of Feature Freeze, but after the auto-sync from
> Debian is disabled.  I don't think you'd even need a Feature Freeze
> exception for that.

That's essentially what I meant, I tend to think of Feature Freeze as a
singular event that includes turning off the auto-sync, perhaps wrongly
so. Even if I wouldn't *technically* need a FFe, I'd still prefer RT
approval since it has a rather large impact on the whole release
process.

> If I'm reading glibc's publishing history [1] correctly, 2.37-0ubuntu1
> was uploaded to Lunar on 2023-02-03, but only migrated on 2023-03-11,
> after Feature Freeze, which was on 2023-02-23.
>
> 2.37-0ubuntu2 was uploaded to Lunar on 2023-03-16 and migrated on 2023-03-27.
>
> It would be interesting to compare these dates if we do things
> differently for Noble.
>
> > I can see a couple of downsides to that approach:
> >
> > * Fewer packages would pick the new ABIs, which presumably bring in some
> >   sort of improvement in one form or another.
> > * The newer glibc would be tested for less time, although presumably
> >   that's somewhat offset by it taking less time to reach the release
> >   pocket from -proposed.
>
> I would guess glibc would migrate around the same date, whether it was
> uploaded tthree weeks before or on Feature Freeze, so it would get
> about the same amount of testing in the release.
>
> Regards
> Graham
>
>
> [1] https://launchpad.net/ubuntu/+source/glibc/+publishinghistory

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