does update-manager set something that /var/lib/dpkg/info/lightdm.config can read to see whether this is a dist-upgrade instead of a normal package installation? Or can it be changed to export something which indicates that? Or can lightdm.config just check if update-manager is in its parental chain?
Then the db_input could be guarded:
if [ dist_upgrade running ];
# set default to lightdm
else
db_input
fi
Michael,
does update-manager set something that /var/lib/ dpkg/info/ lightdm. config can read to see whether this is a dist-upgrade instead of a normal package installation? Or can it be changed to export something which indicates that? Or can lightdm.config just check if update-manager is in its parental chain?
Then the db_input could be guarded:
if [ dist_upgrade running ];
# set default to lightdm
else
db_input
fi