Source: mathicgb
Version: 1.0~git20231121-1
Severity: serious
Tags: patch pending sid trixie
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
mathicgb 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 mathicgb
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
diff -Nru mathicgb-1.0~git20231121/debian/changelog 
mathicgb-1.0~git20231121/debian/changelog
--- mathicgb-1.0~git20231121/debian/changelog   2023-12-21 13:58:50.000000000 
+0000
+++ mathicgb-1.0~git20231121/debian/changelog   2024-02-03 20:27:40.000000000 
+0000
@@ -1,3 +1,10 @@
+mathicgb (1.0~git20231121-1.1) experimental; urgency=medium
+
+  * Non-maintainer upload.
+  * Rename libraries for 64-bit time_t transition.
+
+ -- Graham Inggs <gin...@debian.org>  Sat, 03 Feb 2024 20:27:40 +0000
+
 mathicgb (1.0~git20231121-1) unstable; urgency=medium
 
   * New upstream release (git snapshot).
diff -Nru mathicgb-1.0~git20231121/debian/control 
mathicgb-1.0~git20231121/debian/control
--- mathicgb-1.0~git20231121/debian/control     2023-12-21 13:51:27.000000000 
+0000
+++ mathicgb-1.0~git20231121/debian/control     2024-02-03 20:27:40.000000000 
+0000
@@ -32,7 +32,7 @@
 Package: libmathicgb-dev
 Section: libdevel
 Architecture: any
-Depends: libmathicgb0 (= ${binary:Version}), ${misc:Depends}
+Depends: libmathicgb0t64 (= ${binary:Version}), ${misc:Depends}
 Multi-Arch: same
 Description: Compute Groebner bases (developer tools)
  Mathicgb is a program for computing Groebner basis and signature Groebner
@@ -44,7 +44,10 @@
  .
  This package contains the developer tools.
 
-Package: libmathicgb0
+Package: libmathicgb0t64
+Provides: ${t64:Provides}
+Replaces: libmathicgb0
+Breaks: libmathicgb0 (<< ${source:Version})
 Section: libs
 Architecture: any
 Depends: ${misc:Depends}, ${shlibs:Depends}
diff -Nru mathicgb-1.0~git20231121/debian/libmathicgb0.install 
mathicgb-1.0~git20231121/debian/libmathicgb0.install
--- mathicgb-1.0~git20231121/debian/libmathicgb0.install        2023-12-21 
13:50:32.000000000 +0000
+++ mathicgb-1.0~git20231121/debian/libmathicgb0.install        1970-01-01 
00:00:00.000000000 +0000
@@ -1 +0,0 @@
-usr/lib/*/libmathicgb.so.*
diff -Nru mathicgb-1.0~git20231121/debian/libmathicgb0t64.install 
mathicgb-1.0~git20231121/debian/libmathicgb0t64.install
--- mathicgb-1.0~git20231121/debian/libmathicgb0t64.install     1970-01-01 
00:00:00.000000000 +0000
+++ mathicgb-1.0~git20231121/debian/libmathicgb0t64.install     2023-12-21 
13:50:32.000000000 +0000
@@ -0,0 +1 @@
+usr/lib/*/libmathicgb.so.*
diff -Nru mathicgb-1.0~git20231121/debian/libmathicgb0t64.lintian-overrides 
mathicgb-1.0~git20231121/debian/libmathicgb0t64.lintian-overrides
--- mathicgb-1.0~git20231121/debian/libmathicgb0t64.lintian-overrides   
1970-01-01 00:00:00.000000000 +0000
+++ mathicgb-1.0~git20231121/debian/libmathicgb0t64.lintian-overrides   
2024-02-03 20:27:40.000000000 +0000
@@ -0,0 +1 @@
+libmathicgb0t64: package-name-doesnt-match-sonames libmathicgb0

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