Source: libtar
Version: 1.2.20-8
Severity: serious
Tags: patch pending
Justification: library ABI skew on upgrade
User: debian-...@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
libtar 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 libtar
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'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 6.5.0-14-generic (SMP w/12 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, 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: systemd (via /run/systemd/system)
diff -Nru libtar-1.2.20/debian/changelog libtar-1.2.20/debian/changelog
--- libtar-1.2.20/debian/changelog      2019-08-25 16:49:41.000000000 +0000
+++ libtar-1.2.20/debian/changelog      2024-02-02 08:10:49.000000000 +0000
@@ -1,3 +1,10 @@
+libtar (1.2.20-8.1) experimental; urgency=medium
+
+  * Non-maintainer upload.
+  * Rename libraries for 64-bit time_t transition.
+
+ -- Steve Langasek <vor...@debian.org>  Fri, 02 Feb 2024 08:10:49 +0000
+
 libtar (1.2.20-8) unstable; urgency=low
 
   * Convert debian/rules to modern dh style and upgrade to compat level
diff -Nru libtar-1.2.20/debian/control libtar-1.2.20/debian/control
--- libtar-1.2.20/debian/control        2019-08-25 16:49:41.000000000 +0000
+++ libtar-1.2.20/debian/control        2024-02-02 08:10:48.000000000 +0000
@@ -13,18 +13,18 @@
 Architecture: any
 Multi-Arch: same
 Section: libdevel
-Depends: libtar0 (= ${binary:Version}), ${misc:Depends}
+Depends: libtar0t64 (= ${binary:Version}), ${misc:Depends}
 Description: C library for manipulating tar archives (development files)
  Contains static library, headers, example code and development manpages
  for libtar
 
-Package: libtar0
+Package: libtar0t64
 Architecture: any
 Multi-Arch: same
 Depends: ${shlibs:Depends}, ${misc:Depends}
-Replaces: libtar
-Breaks: libtar
-Provides: libtar
+Replaces: libtar0, libtar
+Breaks: libtar0 (<< ${source:Version}), libtar
+Provides: ${t64:Provides}, libtar
 Description: C library for manipulating tar archives
  libtar allows programs to create, extract and test tar archives.
  It supports both the strict POSIX tar format and many of the commonly-used
diff -Nru libtar-1.2.20/debian/libtar0.install 
libtar-1.2.20/debian/libtar0.install
--- libtar-1.2.20/debian/libtar0.install        2019-08-25 16:25:54.000000000 
+0000
+++ libtar-1.2.20/debian/libtar0.install        1970-01-01 00:00:00.000000000 
+0000
@@ -1 +0,0 @@
-usr/lib/*/lib*.so.*
diff -Nru libtar-1.2.20/debian/libtar0t64.install 
libtar-1.2.20/debian/libtar0t64.install
--- libtar-1.2.20/debian/libtar0t64.install     1970-01-01 00:00:00.000000000 
+0000
+++ libtar-1.2.20/debian/libtar0t64.install     2019-08-25 16:25:54.000000000 
+0000
@@ -0,0 +1 @@
+usr/lib/*/lib*.so.*
diff -Nru libtar-1.2.20/debian/libtar0t64.lintian-overrides 
libtar-1.2.20/debian/libtar0t64.lintian-overrides
--- libtar-1.2.20/debian/libtar0t64.lintian-overrides   1970-01-01 
00:00:00.000000000 +0000
+++ libtar-1.2.20/debian/libtar0t64.lintian-overrides   2024-02-02 
08:10:48.000000000 +0000
@@ -0,0 +1 @@
+libtar0t64: package-name-doesnt-match-sonames libtar0

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