Bug#1099474: colord: On update dpkg colord exits with fatal: The user `colord' already exists, but is not a system user. Exiting.

[Vincent Bernat]

On Tue, 4 Mar 2025 06:28:52 +0100 Petter Reinholdtsen <pere at hungry.com> 
wrote:

> I ran into this too.  I got around it by removing the user before doing the upgrade.
> 
> # getent passwd colord
> colord:x:105:112:colord colour management daemon,,,:/var/lib/colord:/bin/false
> # deluser colord
> # apt dist-upgrade
> [...]
> # getent passwd colord
> colord:x:105:112:colord colour management daemon,,,:/var/lib/colord:/usr/sbin/nologin

It's odd to complain it is not a system user while it is. I have also 
tried to change just the login shell to /usr/sbin/nologin but the error 
still happens.