On Tue, 30 Jan 2024 19:18:12 +0000 mwhudson@debian.org wrote:

Source: czmq
Version: 4.2.1-1
Severity: serious
Tags: patch pending
Justification: library ABI skew on upgrade
User: debian-arm@lists.debian.org
Usertags: time-t

Dear maintainer,

As part of the 64-bit time_t transition required to support 32-bit architectures in 2038 and beyond (https://wiki.debian.org/ReleaseGoals/64bit-time), we have identified
czmq as a source package shipping runtime libraries whose ABI
either is affected by the change in size of time_t, or could not be
analyzed via abi-compliance-checker (and therefore to be on the safe
side we assume is affected).

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.

Since turning on 64-bit time_t is being handled centrally through a

change

to the default dpkg-buildflags (https://bugs.debian.org/1037136), it

is

important that libraries affected by this ABI change all be uploaded

close

together in time.  Therefore I have prepared a 0-day NMU for czmq
which will initially be uploaded to experimental if possible, then to unstable after packages have cleared binary NEW.

Please find the patch for this NMU attached.

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.

The package is in the 'debian' section of Salsa, so feel free to the
changes push directly there when uploading to unstable.

--
Kind regards,
Luca Boccassi

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