Bug#983014: manpages-de: Fails to upgrade from 4.2.0-1 to 4.9.1-5: This installation run will require temporarily removing the essential package manpages-de:amd64 due to a Conflicts/Pre-Depends loop.

[Axel Beckert <abe@debian.org>]

Package: manpages-de
Version: 4.9.1-5
Severity: serious

On several of my systems, manpages-de fails to upgrade from 4.2.0-1 to
4.9.1-5 as follows:

Get:1 https://debian.ethz.ch/debian sid/main amd64 manpages-de all 4.9.1-5 [2750 kB]
Fetched 2750 kB in 0s (12.8 MB/s)
E: This installation run will require temporarily removing the essential package manpages-de:amd64 due to a Conflicts/Pre-Depends loop. This is often bad, but if you really want to do it, activate the APT::Force-LoopBreak option.
E: Internal Error, Could not early remove manpages-de:amd64 (2)

I though have no idea why apt regards manpages-de as
essential. X-Debbugs-Cc'ing the APT developers at
deity@lists.debian.org.

-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (990, 'unstable'), (600, 'testing'), (500, 'unstable-debug'), (500, 'buildd-unstable'), (110, 'experimental'), (1, 'experimental-debug'), (1, 'buildd-experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.18.0-1-amd64 (SMP w/4 CPU threads)
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)
LSM: AppArmor: enabled

manpages-de depends on no packages.

manpages-de recommends no packages.

Versions of packages manpages-de suggests:
ii  man-db [man-browser]  2.9.4-1
ii  manpages              5.10-1

-- no debconf information