Bug#917267: glx-diversions cannot be uninstalled

[Norbert Preining]

Package: glx-diversions
Version: 0.9.0
Severity: serious
Justification: maintainer scripts should not error

Hi all

I recently purged all kind of nvidia* packages from my computer, and now
none of them is actually there, but I still cannot uninstall
glx-diversions:
$ aptitute 
...
Performing actions...
(Reading database ... 961080 files and directories currently installed.)
Removing glx-diversions (0.9.0) ...
dpkg-divert: error: rename involves overwriting '/usr/lib/i386-linux-gnu/libGL.so.1' with
  different file '/usr/lib/mesa-diverted/i386-linux-gnu/libGL.so.1', not allowed
dpkg: error processing package glx-diversions (--remove):
 installed glx-diversions package post-removal script subprocess returned error exit status 2
Removing glx-alternative-mesa (0.9.0) ...
Errors were encountered while processing:
 glx-diversions
E: Sub-process /usr/bin/dpkg returned an error code (1)
..

Same with dpkg --purge ...

Best

-- System Information:
Debian Release: buster/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (200, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.19.11 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages glx-diversions depends on:
ii  dpkg                      1.19.2
pn  glx-alternative-mesa      <none>
ii  nvidia-installer-cleanup  20151021+8

glx-diversions recommends no packages.

glx-diversions suggests no packages.

-- no debconf information