[Debichem-devel] Bug#1036639: libost-base2.3: please add Breaks: libost-base2.2 for smoother upgrades from bullseye

[Andreas Beckmann]

Package: libost-base2.3
Version: 2.3.1-8
Severity: serious
Tags: patch
User: debian-qa at lists.debian.org
Usertags: piuparts

Hi,

the openstructure library stacks from bullseye and bookworm are not
co-installable due to a transitive dependency conflict on
libboost-regex1.74.0-icu67 which is a virtual package provided by
libboost-regex1.74.0 in bullseye only, while the bookworm version
provides libboost-regex1.74.0-icu72. This is hard for apt to figure out
correctly and on some upgrade paths apt prefers to keep the obsolete
library stack installed instead of replacng it with the new one.
Adding a Breaks to the base package which is at the top of the
dependency tree helps apt making the right choice: removing the old
library stack s.t. it can upgrade libboost-regex1.74.0.

Please consider applying the attached patch.


Andreas
-------------- next part --------------
>From 69fc50fdf3bdc26ed5152a7d6ec3c264e279c143 Mon Sep 17 00:00:00 2001
From: Andreas Beckmann <anbe at debian.org>
Date: Tue, 23 May 2023 18:38:19 +0200
Subject: [PATCH] libost-base2.3: add Breaks: libost-base2.2 for smoother
 upgrades from bullseye

---
 debian/changelog | 7 +++++++
 debian/control   | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/debian/changelog b/debian/changelog
index eda78fd..e6970ac 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+openstructure (2.3.1-9) UNRELEASED; urgency=medium
+
+  * libost-base2.3: Add Breaks: libost-base2.2 for smoother upgrades from
+    bullseye.  (Closes: #)
+
+ -- Andreas Beckmann <anbe at debian.org>  Tue, 23 May 2023 18:37:03 +0200
+
 openstructure (2.3.1-8) unstable; urgency=medium
 
   * Install shlibs into multiarch locations using debian/rules.
diff --git a/debian/control b/debian/control
index f7340ea..310d73b 100644
--- a/debian/control
+++ b/debian/control
@@ -41,6 +41,8 @@ Section: libs
 Depends:
  ${misc:Depends},
  ${shlibs:Depends},
+Breaks:
+ libost-base2.2,
 Description: Open-Source Computational Structural Biology Framework
  OpenStructure aims to provide an open-source, modular, flexible, molecular
  modelling and visualization environment. It is targeted at interested method
-- 
2.20.1