Bug#870582: libscalapack-openmpi-dev: fails to upgrade from 'sid' - trying to overwrite /usr/lib/x86_64-linux-gnu/libscalapack-openmpi.so

[Andreas Beckmann]

Package: libscalapack-openmpi-dev
Version: 2.0.2-1exp3
Severity: serious
User: debian-qa at lists.debian.org
Usertags: piuparts
Control: affects -1 + libscalapack-mpi-dev

Hi,

during a test with piuparts I noticed your package fails to upgrade from
'sid' to 'experimental'.
It installed fine in 'sid', then the upgrade to 'experimental' 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#s-replaces

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

  Selecting previously unselected package libscalapack-openmpi2.0.
  (Reading database ... 
(Reading database ... 7455 files and directories currently installed.)
  Preparing to unpack .../libscalapack-openmpi2.0_2.0.2-1exp3_amd64.deb ...
  Unpacking libscalapack-openmpi2.0 (2.0.2-1exp3) ...
  Selecting previously unselected package libscalapack-openmpi-dev.
  Preparing to unpack .../libscalapack-openmpi-dev_2.0.2-1exp3_amd64.deb ...
  Unpacking libscalapack-openmpi-dev (2.0.2-1exp3) ...
  dpkg: error processing archive /var/cache/apt/archives/libscalapack-openmpi-dev_2.0.2-1exp3_amd64.deb (--unpack):
   trying to overwrite '/usr/lib/x86_64-linux-gnu/libscalapack-openmpi.so', which is also in package libscalapack-mpi-dev 1.8.0-14
  Preparing to unpack .../libscalapack-mpi-dev_2.0.2-1exp3_amd64.deb ...
  Unpacking libscalapack-mpi-dev (2.0.2-1exp3) over (1.8.0-14) ...
  Errors were encountered while processing:
   /var/cache/apt/archives/libscalapack-openmpi-dev_2.0.2-1exp3_amd64.deb

cheers,

Andreas
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