Source: vowpal-wabbit
Version: 8.6.1.dfsg1-1
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
vowpal-wabbit 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 vowpal-wabbit
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 6.5.0-14-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 vowpal-wabbit-8.6.1.dfsg1/debian/changelog 
vowpal-wabbit-8.6.1.dfsg1/debian/changelog
--- vowpal-wabbit-8.6.1.dfsg1/debian/changelog  2018-07-27 23:27:03.000000000 
+0000
+++ vowpal-wabbit-8.6.1.dfsg1/debian/changelog  2024-02-04 18:34:13.000000000 
+0000
@@ -1,3 +1,10 @@
+vowpal-wabbit (8.6.1.dfsg1-1.1) experimental; urgency=medium
+
+  * Non-maintainer upload.
+  * Rename libraries for 64-bit time_t transition.
+
+ -- Steve Langasek <vor...@debian.org>  Sun, 04 Feb 2024 18:34:13 +0000
+
 vowpal-wabbit (8.6.1.dfsg1-1) unstable; urgency=medium
 
   * Fresh upstream release
diff -Nru vowpal-wabbit-8.6.1.dfsg1/debian/control 
vowpal-wabbit-8.6.1.dfsg1/debian/control
--- vowpal-wabbit-8.6.1.dfsg1/debian/control    2018-07-27 23:27:03.000000000 
+0000
+++ vowpal-wabbit-8.6.1.dfsg1/debian/control    2024-02-04 18:34:13.000000000 
+0000
@@ -19,7 +19,7 @@
 
 Package: vowpal-wabbit
 Architecture: any
-Depends: ${shlibs:Depends}, ${misc:Depends}, libvw0 (= ${binary:Version})
+Depends: ${shlibs:Depends}, ${misc:Depends}, libvw0t64 (= ${binary:Version})
 Suggests: vowpal-wabbit-doc
 Description: fast and scalable online machine learning algorithm
  Vowpal Wabbit is a fast online machine learning algorithm. The core
@@ -31,7 +31,10 @@
     computation)
   - feature pairing
 
-Package: libvw0
+Package: libvw0t64
+Provides: ${t64:Provides}
+Replaces: libvw0
+Breaks: libvw0 (<< ${source:Version})
 Section: libs
 Architecture: any
 Depends: ${shlibs:Depends}, ${misc:Depends}
@@ -50,7 +53,7 @@
 Package: libvw-dev
 Section: libdevel
 Architecture: any
-Depends: ${shlibs:Depends}, ${misc:Depends}, libvw0 (= ${binary:Version})
+Depends: ${shlibs:Depends}, ${misc:Depends}, libvw0t64 (= ${binary:Version})
 Description: fast and scalable online machine learning algorithm - development 
files
  Vowpal Wabbit is a fast online machine learning algorithm. The core
  algorithm is specialist gradient descent (GD) on a loss function
diff -Nru vowpal-wabbit-8.6.1.dfsg1/debian/libvw0.install 
vowpal-wabbit-8.6.1.dfsg1/debian/libvw0.install
--- vowpal-wabbit-8.6.1.dfsg1/debian/libvw0.install     2018-07-27 
23:27:03.000000000 +0000
+++ vowpal-wabbit-8.6.1.dfsg1/debian/libvw0.install     1970-01-01 
00:00:00.000000000 +0000
@@ -1 +0,0 @@
-usr/lib/*/*.so.*
diff -Nru vowpal-wabbit-8.6.1.dfsg1/debian/libvw0t64.install 
vowpal-wabbit-8.6.1.dfsg1/debian/libvw0t64.install
--- vowpal-wabbit-8.6.1.dfsg1/debian/libvw0t64.install  1970-01-01 
00:00:00.000000000 +0000
+++ vowpal-wabbit-8.6.1.dfsg1/debian/libvw0t64.install  2018-07-27 
23:27:03.000000000 +0000
@@ -0,0 +1 @@
+usr/lib/*/*.so.*
diff -Nru vowpal-wabbit-8.6.1.dfsg1/debian/libvw0t64.lintian-overrides 
vowpal-wabbit-8.6.1.dfsg1/debian/libvw0t64.lintian-overrides
--- vowpal-wabbit-8.6.1.dfsg1/debian/libvw0t64.lintian-overrides        
1970-01-01 00:00:00.000000000 +0000
+++ vowpal-wabbit-8.6.1.dfsg1/debian/libvw0t64.lintian-overrides        
2024-02-04 18:34:13.000000000 +0000
@@ -0,0 +1 @@
+libvw0t64: package-name-doesnt-match-sonames libvw0

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