Bug#1063266: polylib: NMU diff for 64-bit time_t transition

[Lucas Kanashiro]

Source: polylib
Version: 5.22.5-4+dfsg
Severity: serious
Tags: patch pending sid trixie
Justification: library ABI skew on upgrade
User: debian-arm at lists.debian.org
Usertags: time-t

NOTICE: these changes must not be uploaded to unstable yet!

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
polylib 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 polylib
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.



-- System Information:
Debian Release: trixie/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.2.0-39-generic (SMP w/32 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
-------------- next part --------------
diff -Nru polylib-5.22.5/debian/changelog polylib-5.22.5/debian/changelog
--- polylib-5.22.5/debian/changelog	2018-01-26 13:47:38.000000000 -0200
+++ polylib-5.22.5/debian/changelog	2024-02-05 19:17:40.000000000 -0300
@@ -1,3 +1,10 @@
+polylib (5.22.5-4+0.1) experimental; urgency=medium
+
+  * Non-maintainer upload.
+  * Rename libraries for 64-bit time_t transition.
+
+ -- Lucas Kanashiro <kanashiro at debian.org>  Mon, 05 Feb 2024 19:17:40 -0300
+
 polylib (5.22.5-4+dfsg) unstable; urgency=medium
 
   * Team upload.
diff -Nru polylib-5.22.5/debian/control polylib-5.22.5/debian/control
--- polylib-5.22.5/debian/control	2018-01-26 13:47:38.000000000 -0200
+++ polylib-5.22.5/debian/control	2024-02-05 19:17:40.000000000 -0300
@@ -9,7 +9,10 @@
 Vcs-Git: https://salsa.debian.org/science-team/polylib.git
 Homepage: http://icps.u-strasbg.fr/polylib/polylib_src
 
-Package: libpolylib64-8
+Package: libpolylib64-8t64
+Provides: ${t64:Provides}
+Replaces: libpolylib64-8
+Breaks: libpolylib64-8 (<< ${source:Version})
 Architecture: any
 Section: libs
 Depends: ${shlibs:Depends},
@@ -25,7 +28,7 @@
 Package: libpolylib64-dev
 Architecture: any
 Section: libdevel
-Depends: libpolylib64-8 (= ${binary:Version}),
+Depends: libpolylib64-8t64 (= ${binary:Version}),
          ${misc:Depends}
 Description: Development files for the long int version of PolyLib
  Polylib is a free C library for doing computations on polyhedra.
@@ -41,7 +44,7 @@
 Architecture: any
 Section: math
 Depends: ${shlibs:Depends},
-         libpolylib64-8 (=${binary:Version}),
+         libpolylib64-8t64 (=${binary:Version}),
          ${misc:Depends}
 Description: Various tools using libpolylib
  Polylib is a free C library for doing computations on polyhedra.
diff -Nru polylib-5.22.5/debian/libpolylib64-8.install polylib-5.22.5/debian/libpolylib64-8.install
--- polylib-5.22.5/debian/libpolylib64-8.install	2018-01-26 13:47:38.000000000 -0200
+++ polylib-5.22.5/debian/libpolylib64-8.install	1969-12-31 21:00:00.000000000 -0300
@@ -1 +0,0 @@
-usr/lib/*/lib*.so.*
diff -Nru polylib-5.22.5/debian/libpolylib64-8t64.install polylib-5.22.5/debian/libpolylib64-8t64.install
--- polylib-5.22.5/debian/libpolylib64-8t64.install	1969-12-31 21:00:00.000000000 -0300
+++ polylib-5.22.5/debian/libpolylib64-8t64.install	2018-01-26 13:47:38.000000000 -0200
@@ -0,0 +1 @@
+usr/lib/*/lib*.so.*
diff -Nru polylib-5.22.5/debian/libpolylib64-8t64.lintian-overrides polylib-5.22.5/debian/libpolylib64-8t64.lintian-overrides
--- polylib-5.22.5/debian/libpolylib64-8t64.lintian-overrides	1969-12-31 21:00:00.000000000 -0300
+++ polylib-5.22.5/debian/libpolylib64-8t64.lintian-overrides	2024-02-05 19:17:40.000000000 -0300
@@ -0,0 +1 @@
+libpolylib64-8t64: package-name-doesnt-match-sonames libpolylib64-8