Package: qemu-system-data
Version: 1:6.2+dfsg-2
Severity: serious
User: debian...@lists.debian.org
Usertags: piuparts replaces-without-breaks

Hi,

during a test with piuparts and DOSE tools I noticed your package causes
removal of files that also belong to another package.
This is caused by using Replaces without corresponding Breaks.

The installation sequence to reproduce this problem is

  apt-get install qemu-system-ppc/stable
  # (1)
  apt-get install qemu-system-data
  apt-get remove qemu-system-data
  # (2)

The list of installed files at points (1) and (2) should be identical,
but the following files have disappeared:

  /usr/share/qemu/bamboo.dtb
  /usr/share/qemu/canyonlands.dtb

This is a serious bug violating policy 7.6, see
https://www.debian.org/doc/debian-policy/ch-relationships.html#overwriting-files-and-replacing-packages-replaces
and also see the footnote that describes this incorrect behavior:
https://www.debian.org/doc/debian-policy/ch-relationships.html#id13

The qemu-system-data package has the following relationships with 
qemu-system-ppc:

  Conflicts: n/a
  Breaks:    n/a
  Replaces:  qemu-system-ppc (<< 1:6.1-4~)

Looking at the package relationships of qemu-system-data I see the
following additional inconsistencies:

* The Provides: qemu-keymaps lacks corresponding Conflicts+Replaces: 
qemu-keymaps
* The Replaces: qemu-system-common (<< 1:2.12+dfsg-2~), qemu-system-ppc (<< 
1:6.1-4~), qemu-system-sparc (<< 1:4.2-4~)
  lacks corresponding Breaks: qemu-system-common (<< 1:2.12+dfsg-2~), 
qemu-system-ppc (<< 1:6.1-4~), qemu-system-sparc (<< 1:4.2-4~)


>From the attached log (scroll to the bottom...):

0m29.8s ERROR: FAIL: After purging files have disappeared:
  /usr/share/qemu/bamboo.dtb     owned by: qemu-system-data
  /usr/share/qemu/canyonlands.dtb        owned by: qemu-system-data

0m29.8s ERROR: FAIL: After purging files have been modified:
  /var/lib/dpkg/info/qemu-system-ppc.list        not owned


cheers,

Andreas

Attachment: qemu-system-ppc=1:5.2+dfsg-11+deb11u1_qemu-system-data=1:6.2+dfsg-3.log.gz
Description: application/gzip

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