[Python-apps-team] Bug#863594: veusz-helpers: duplicates .../veusz/resources symlink

[Aaron M. Ucko]

Package: veusz-helpers
Version: 1.21.1-1+b1
Severity: grave
Justification: renders package unusable (veusz becomes uninstallable)

The recent binNMU of veusz-helpers for sip-api-11.3 somehow made it
duplicate the /usr/lib/python2.7/dist-packages/veusz/resources symlink
from the main veusz package.  Even though the symlinks are identical,
dpkg tolerates this situation only with --force-overwrite:

  Unpacking veusz-helpers (1.21.1-1+b1) over (1.21.1-1) ...
  dpkg: error processing archive /tmp/user/0/apt-dpkg-install-y5VKrI/28-veusz-helpers_1.21.1-1+b1_amd64.deb (--unpack):
   trying to overwrite '/usr/lib/python2.7/dist-packages/veusz/resources', which is also in package veusz 1.21.1-1
[...]
  $ sudo dpkg -i --force-overwrite /var/cache/apt/archives/veusz-helpers_1.21.1-1+b1_amd64.deb
  (Reading database ... 2474063 files and directories currently installed.)
  Preparing to unpack .../veusz-helpers_1.21.1-1+b1_amd64.deb ...
  Unpacking veusz-helpers (1.21.1-1+b1) over (1.21.1-1) ...
  dpkg: warning: overriding problem because --force enabled:
  dpkg: warning: trying to overwrite '/usr/lib/python2.7/dist-packages/veusz/resources', which is also in package veusz 1.21.1-1
  Setting up veusz-helpers (1.21.1-1+b1) ...

Could you please take a look, and ensure that the symlink once again
winds up in only one binary pacakges?

Thanks!

-- System Information:
Debian Release: 9.0
  APT prefers testing
  APT policy: (500, 'testing'), (500, 'stable'), (300, 'unstable')
Architecture: amd64
 (x86_64)
Foreign Architectures: i386, x32

Kernel: Linux 4.9.0-3-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages veusz-helpers depends on:
ii  libc6                             2.24-10
ii  libgcc1                           1:6.3.0-18
ii  libqt4-xml                        4:4.8.7+dfsg-11
ii  libqtcore4                        4:4.8.7+dfsg-11
ii  libqtgui4                         4:4.8.7+dfsg-11
ii  libstdc++6                        6.3.0-18
ii  python                            2.7.13-2
ii  python-numpy [python-numpy-abi9]  1:1.12.1-2
ii  python-qt4                        4.11.4+dfsg-2+b1
ii  python-sip [sip-api-11.3]         4.18.1+dfsg-2

veusz-helpers recommends no packages.

Versions of packages veusz-helpers suggests:
ii  veusz  1.21.1-1

-- no debconf information