Re: Heads up: Another targeted mass rebuild of ~4k Python packages will happen in Fedora 43+

[Miro Hrončok]

On 14. 08. 25 12:02, Miro Hrončok wrote:
> On 12. 08. 25 22:22, Miro Hrončok wrote:
> > On 12. 08. 25 13:00, Miro Hrončok wrote:
> > > Hello Fedora packagers.
> > >
> > > Unfortunately, we need to rebuild all Fedora 43 (and 44) packages with 
> > > Python 3.14 .pyc files. To obtain a list, use:
> > >
> > > $ repoquery --repo=rawhide --refresh -f *.cpython-314.pyc --source
> > >    (3931 unique packages)
> > >
> > > This is needed because Python 3.14 just bumped the pyc "magic 
> > > number" (version) due to a severe bugfix [1].
> > >
> > > Packages with old .pyc files will have slower import times and might report 
> > > AVC denials in restricted contexts. However, they remain functional, there 
> > > is no need to panic.
> > >
> > > The plan, as of now, is:
> > >
> > > 1. Either wait for Python 3.14.0rc2 release or backport the change.
> >
> > Let's wait. rc2 should be released on Thursday.
> >
> > https://discuss.python.org/t/early-3-14-0-rc2-and-extra-rc3/102151
> > > 2. Wait for the Fedora 43 branching to finish.
> >
> > That's more or less done now it seems and will likely officially be done by 
> > Thursday.
> > > 3. Bump and build all 3931 packages in rawhide (except kernel).
> > >   4. FF-merge into f43 and build all packages that match the criteria:
> > >      a) the rawhide and f43 branches were not different before 3.
> > >      b) they have no update stuck in bodhi/gating.
> >
> > Considering the rebuilds will go trough bodhi, we don't actually need to do 
> > that :)
> > > 5. Open bugzillas for the remaining packages (failed or skipped rebuild).
> > >
> > > The rebuild can be done in any order (i.e. all at once) and does not need to 
> > > happen in a side tag.
> > >
> > > I will follow up when things start moving. Let me know if I should alter the 
> > > plan somehow.
> > >
> > > [1] https://github.com/python/cpython/pull/137427
>
> The current plan is, for each affected package:
>
> 1. check if a f44 build is running, abort if so
>   2. check if the latest f44 build is completed but tagged in a side tag only,
>      abort if so
>   3. check if rawhide and f43 branches are different, abort f43 build if so
>   4. check builds for f43 as we did in first two steps, abort f43 is so
>   5. bump + push + build (and optionally ff merge + push + build f43)
>
> All builds will go trough bodhi, so any fatal gating failures would not be 
> ignored.

The rebuild has started.