Bug#1099470: colord: upgrade to colord 1.4.7-3 fails: The user `colord' already exists, but is not a system user.

[Vincent Lefevre]

Package: colord
Version: 1.4.7-3
Severity: serious

When upgrading colord with aptitude:

Setting up colord (1.4.7-3) ...
warn: The home dir /var/lib/colord you specified already exists.

fatal: The user `colord' already exists, but is not a system user. Exiting.
dpkg: error processing package colord (--configure):
 installed colord package post-installation script subprocess returned error exit status 13
[...]
Errors were encountered while processing:
 colord
[...]
E: Sub-process /usr/bin/dpkg returned an error code (1)
Setting up colord (1.4.7-3) ...
warn: The home dir /var/lib/colord you specified already exists.

fatal: The user `colord' already exists, but is not a system user. Exiting.
dpkg: error processing package colord (--configure):
 installed colord package post-installation script subprocess returned error exit status 13
Errors were encountered while processing:
 colord

-- System Information:
Debian Release: trixie/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable-debug'), (500, 'proposed-updates-debug'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.11.10-amd64 (SMP w/12 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages colord depends on:
ii  acl                                          2.3.2-2+b1
ii  adduser                                      3.143
ii  colord-data                                  1.4.7-3
ii  dconf-gsettings-backend [gsettings-backend]  0.40.0-5
ii  libc6                                        2.41-3
ii  libcolord2                                   1.4.7-3
ii  libcolorhug2                                 1.4.7-3
ii  libdbus-1-3                                  1.16.2-1
ii  libglib2.0-0t64                              2.83.5-1
ii  libgudev-1.0-0                               238-6
ii  libgusb2                                     0.4.9-1+b1
ii  liblcms2-2                                   2.16-2
ii  libpolkit-gobject-1-0                        126-2
ii  libsane1                                     1.3.1-1
ii  libsqlite3-0                                 3.46.1-1
hi  libsystemd0                                  256.7-1
ii  polkitd                                      126-2

colord recommends no packages.

Versions of packages colord suggests:
pn  colord-sensor-argyll  <none>

-- no debconf information

-- 
Vincent Lefèvre <vincent at vinc17.net> - Web: <https://www.vinc17.net/>
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Work: CR INRIA - computer arithmetic / Pascaline project (LIP, ENS-Lyon)