Package: python3-sage
Version: 9.4-1
Severity: serious
User: debian...@lists.debian.org
Usertags: piuparts

Hi,

during a test with piuparts I noticed your package fails to upgrade from
'stable'.
It installed fine in 'stable', then the upgrade to 'sid' fails
because it tries to overwrite other packages files without declaring a
Breaks+Replaces relation.

See policy 7.6 at
https://www.debian.org/doc/debian-policy/ch-relationships.html#overwriting-files-and-replacing-packages-replaces

This test intentionally skipped 'testing' to find file overwrite
problems before packages migrate from 'unstable' to 'testing'.

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

  Preparing to unpack .../python3-sage_9.4-2_amd64.deb ...
  Unpacking python3-sage (9.4-2) ...
  dpkg: error processing archive 
/var/cache/apt/archives/python3-sage_9.4-2_amd64.deb (--unpack):
   trying to overwrite '/usr/lib/python3/dist-packages/sage/__init__.py', which 
is also in package sagemath-common 9.2-2
  dpkg-deb: error: paste subprocess was killed by signal (Broken pipe)
  Errors were encountered while processing:
   /var/cache/apt/archives/python3-sage_9.4-2_amd64.deb

cheers,

Andreas

Attachment: sagemath-common=9.2-2_python3-sage=9.4-2.log.gz
Description: application/gzip

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