On Tue, Jan 30, 2024 at 12:34:50AM +0000, Ian Jackson wrote: > > To ensure that inconsistent combinations of libraries with their > > reverse-dependencies are never installed together, it is necessary to > > have a library transition, which is most easily done by renaming the > > runtime library package.
> I'm surprised at
> +Provides: ${t64:Provides}
> +Replaces: libadns1
> +Breaks: libadns1 (<< ${source:Version})
> I don't know why this isn't just a soname transition. But I think
> probably people more involved in this have thoughyt this through.
> (Perhaps this to do with making this a no-op on 64-bit arches.)
Well first, sonames are generally considered upstream's namespace to manage
so we would have to have Debian-specific sonames here which is a bit ugly.
Second, changing the soname requires changes to the upstream build systems
of each of the 1200 different packages, so that would really be incompatible
with mass-NMUing.
And third, yes, the ABI is only changing on 32-bit architectures; so
maintaining compatibility with third-party packages that depend on e.g.
libpam0g on amd64 has at least some value, and thus we maximize this value
by applying compatibility rules consistently rather than trying to suss out
which libraries it's worth keeping compatibility for.
> > If you have any concerns about this patch, please reach out ASAP.
> > Although this package will be uploaded to experimental immediately,
> > there will be a period of several days before we begin uploads to
> > unstable; so if information becomes available that your package should
> > not be included in the transition, there is time for us to amend the
> > planned uploads.
> If what I have written doesn't indicate that something has been
> overlooked, you should go ahead as planned. I guess I should avoid
> uploading myself.
> adns is not an "unusual" package, other than insofar as time_t being
> part of an ABI-exposed struct makes it unusual.
Cheers,
--
Steve Langasek Give me a lever long enough and a Free OS
Debian Developer to set it on, and I can move the world.
Ubuntu Developer https://www.debian.org/
slanga...@ubuntu.com vor...@debian.org
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