[Debian-med-packaging] Bug#1062201: gwyddion: NMU diff for 64-bit time_t transition

[Graham Inggs]

Source: gwyddion
Version: 2.64-1
Severity: serious
Tags: patch pending
Justification: library ABI skew on upgrade
User: debian-arm at 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
gwyddion 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 gwyddion
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'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 6.5.0-15-generic (SMP w/8 CPU threads; PREEMPT)
Kernel taint flags: TAINT_OOT_MODULE
Locale: LANG=C, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: unable to detect
-------------- next part --------------
diff -Nru gwyddion-2.64/debian/changelog gwyddion-2.64/debian/changelog
--- gwyddion-2.64/debian/changelog	2023-11-27 19:30:09.000000000 +0000
+++ gwyddion-2.64/debian/changelog	2024-01-31 16:52:32.000000000 +0000
@@ -1,3 +1,10 @@
+gwyddion (2.64-1.1) experimental; urgency=medium
+
+  * Non-maintainer upload.
+  * Rename libraries for 64-bit time_t transition.
+
+ -- Graham Inggs <ginggs at debian.org>  Wed, 31 Jan 2024 16:52:32 +0000
+
 gwyddion (2.64-1) unstable; urgency=medium
 
   * New upstream version
diff -Nru gwyddion-2.64/debian/control gwyddion-2.64/debian/control
--- gwyddion-2.64/debian/control	2023-11-27 19:30:09.000000000 +0000
+++ gwyddion-2.64/debian/control	2024-01-31 16:52:31.000000000 +0000
@@ -58,7 +58,10 @@
  This package contains architecture-independent files for Gwyddion - a modular
  program for Scanning Probe Microscopy data visualization and analysis.
 
-Package: libgwyddion2-0
+Package: libgwyddion2-0t64
+Provides: ${t64:Provides}
+Replaces: libgwyddion2-0
+Breaks: libgwyddion2-0 (<< ${source:Version})
 Architecture: any
 Multi-Arch: same
 Section: libs
@@ -85,7 +88,7 @@
 Multi-Arch: same
 Section: libdevel
 Depends: ${misc:Depends},
-         libgwyddion2-0 (= ${binary:Version})
+         libgwyddion2-0t64 (= ${binary:Version})
 Suggests: libgwyddion20-doc
 Description: header files for Gwyddion SPM analysis tool
  Gwyddion is a modular program for Scanning Probe Microscopy (SPM) data
diff -Nru gwyddion-2.64/debian/libgwyddion2-0.install gwyddion-2.64/debian/libgwyddion2-0.install
--- gwyddion-2.64/debian/libgwyddion2-0.install	2023-11-27 19:30:09.000000000 +0000
+++ gwyddion-2.64/debian/libgwyddion2-0.install	1970-01-01 00:00:00.000000000 +0000
@@ -1 +0,0 @@
-usr/lib/*/libgwy*2.so.*
diff -Nru gwyddion-2.64/debian/libgwyddion2-0.links gwyddion-2.64/debian/libgwyddion2-0.links
--- gwyddion-2.64/debian/libgwyddion2-0.links	2023-11-27 19:30:09.000000000 +0000
+++ gwyddion-2.64/debian/libgwyddion2-0.links	1970-01-01 00:00:00.000000000 +0000
@@ -1,4 +0,0 @@
-usr/share/doc/gwyddion-common/AUTHORS.gz	usr/share/doc/libgwyddion2-0/AUTHORS.gz
-usr/share/doc/gwyddion-common/README		usr/share/doc/libgwyddion2-0/README
-usr/share/doc/gwyddion-common/THANKS		usr/share/doc/libgwyddion2-0/THANKS
-usr/share/doc/gwyddion-common/TODO		usr/share/doc/libgwyddion2-0/TODO
diff -Nru gwyddion-2.64/debian/libgwyddion2-0t64.install gwyddion-2.64/debian/libgwyddion2-0t64.install
--- gwyddion-2.64/debian/libgwyddion2-0t64.install	1970-01-01 00:00:00.000000000 +0000
+++ gwyddion-2.64/debian/libgwyddion2-0t64.install	2023-11-27 19:30:09.000000000 +0000
@@ -0,0 +1 @@
+usr/lib/*/libgwy*2.so.*
diff -Nru gwyddion-2.64/debian/libgwyddion2-0t64.links gwyddion-2.64/debian/libgwyddion2-0t64.links
--- gwyddion-2.64/debian/libgwyddion2-0t64.links	1970-01-01 00:00:00.000000000 +0000
+++ gwyddion-2.64/debian/libgwyddion2-0t64.links	2023-11-27 19:30:09.000000000 +0000
@@ -0,0 +1,4 @@
+usr/share/doc/gwyddion-common/AUTHORS.gz	usr/share/doc/libgwyddion2-0/AUTHORS.gz
+usr/share/doc/gwyddion-common/README		usr/share/doc/libgwyddion2-0/README
+usr/share/doc/gwyddion-common/THANKS		usr/share/doc/libgwyddion2-0/THANKS
+usr/share/doc/gwyddion-common/TODO		usr/share/doc/libgwyddion2-0/TODO
diff -Nru gwyddion-2.64/debian/libgwyddion2-0t64.lintian-overrides gwyddion-2.64/debian/libgwyddion2-0t64.lintian-overrides
--- gwyddion-2.64/debian/libgwyddion2-0t64.lintian-overrides	1970-01-01 00:00:00.000000000 +0000
+++ gwyddion-2.64/debian/libgwyddion2-0t64.lintian-overrides	2024-01-31 16:52:31.000000000 +0000
@@ -0,0 +1 @@
+libgwyddion2-0t64: package-name-doesnt-match-sonames libgwyddion2-0