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/ slangasek@ubuntu.com vorlon@debian.org

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Source: adns
Followup-For: Bug #1061866

Apologies, an oversight in the conversion script caused us to fail to update strict versioned dependencies on the previous package name. Please find attached a fixed patch.

This has also now been uploaded to experimental.

diff -Nru adns-1.6.0/debian/changelog adns-1.6.0/debian/changelog
--- adns-1.6.0/debian/changelog 2020-08-23 20:25:53.000000000 +0000
+++ adns-1.6.0/debian/changelog 2024-01-31 02:31:47.000000000 +0000
@@ -1,3 +1,11 @@
+adns (1.6.0-2.1~exp2) experimental; urgency=medium
+
+ * Non-maintainer upload.
+ * Rename libraries for 64-bit time_t transition.
+ * Fix uninstallable packages from the previous upload.
+
+ -- Steve Langasek <vorlon@debian.org> Wed, 31 Jan 2024 02:31:47 +0000
+
adns (1.6.0-2) unstable; urgency=medium

* Don't ignore make clean failures.
diff -Nru adns-1.6.0/debian/control adns-1.6.0/debian/control
--- adns-1.6.0/debian/control 2020-08-23 20:25:53.000000000 +0000
+++ adns-1.6.0/debian/control 2024-01-31 02:31:24.000000000 +0000
@@ -10,7 +10,7 @@
Package: libadns1-dev
Section: libdevel
Architecture: any
-Depends: libadns1 (= ${binary:Version}), libc6-dev, ${misc:Depends}
+Depends: libadns1t64 (= ${binary:Version}), libc6-dev, ${misc:Depends}
Conflicts: libadns0
Description: Asynchronous-capable DNS client library (develop

Control: severity -1 important

Ian Jackson writes ("Re: Bug#1061866: adns: NMU diff for 64-bit time_t transition"):

I have just got an alert saying adns is now scheduled for autoremoval
due to #1061866.

My understanding was that you were intending to NMU to unstable after "several days". I have been holding off making an upload myself so as
not to interfere.

I'm not sure if I should:

(i) wait

(ii) apply that patch (on top of what's in experimental)
and upload to experimental

(iii) apply that patch on top of what's in experimental
and upload the result to sid.

For now I am going to downgrade this bug in the hope that the current
answer is (i).

Regards,
Ian.

--
Ian Jackson <ijackson@chiark.greenend.org.uk> These opinions are my own.

Pronouns: they/he. If I emailed you from @fyvzl.net or @evade.org.uk,
that is a private address which bypasses my fierce spamfilter.

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