Bug#1141561: transition: c-blosc2

Dear Emilio,

On Mon, 6 Jul 2026 19:54:28 +0200 Emilio Pozuelo Monfort 
<[email protected]> wrote:
> Control: tags -1 moreinfo
> 
> On 06/07/2026 10:49, Antonio Valentino wrote:
> > Package: release.debian.org
> > Severity: normal
> > X-Debbugs-Cc: [email protected], [email protected]
> > Control: affects -1 + src:c-blosc2
> > User: [email protected]
> > Usertags: transition
> > 
> > Dear release team,
> > 
> > the upgrade from c-blosc2 v2.23.1 to v3.1.5 requires a change in the
> > SONAME and hence a transition. The new version is already in experimental.
> > The following source packages need to be rebuilt:
> > 
> > * adios2
> > * groonga
> > * pytables
> > * zmat
> > 
> > I have tested the above packages with the new version of c-blosc2.
> > Only for pytables it was necessary a small patch that has been already
> > uploaded.
> > 
> > pytables 3.11.1-2 is now in unstable and it should migrate to testing in
> > 5 days.
> > 
> > Apart for that all the packages build successfully with the new c-blosc2
> > version that is currently in experimental.
> 
> There's a few build failures in experimental:
> 
> https://buildd.debian.org/status/package.php?p=c-blosc2&suite=experimental
> 
> Please fix those in experimental first.

Thanks for the quick reply.
According to [1] 32bit architectures are no longer supported in c-blosc2 
v3.x.

My plan would be just to request the removal of c-blosc2 package for 
i386 and armhf from sid.
According to my understanding this should unblock the migration of the 
new new c-blosc2 package to testing in a normal situation.
I'm not sure if this is fine for a transition (like in this case).
Do you have comments or any advice?



[1] https://github.com/Blosc/c-blosc2/issues/790



kind regards