Hi. In the code you quoted:
if command -v systemd-sysusers >/dev/null; then
systemd-sysusers ${DPKG_ROOT:+--root="$DPKG_ROOT"} dbus.conf
else
in_sysroot adduser --system --quiet --group "$MESSAGEUSER"
fi
we are inside a build chroot, which has only essential and
build-essential packages, so the command which works is the second one,
and this boils down to this command not working:
adduser --system --quiet --group "messagebus"
When the messagebus user has "!*", this used to work in trixie but it
does not work anymore in forky/sid. That seems to be the regression.
Would it be ok to reassign this to the adduser package?
Thanks.