For earlier discussion please see #929552.
Resolvconf preinst has to create run-time directories. Resolvconf postinst has to enable updates. (They of course do other things which aren't relevant here.)
Resolvconf's Upstart job does both; /etc/init/resolvconf.conf contains code like this:
[...]
start on mounted MOUNTPOINT=/run
pre-start script
mkdir -p /run/resolvconf/interface
touch /run/resolvconf/postponed-update
resolvconf --enable-updates
end script
[...]
Now, resolvconf postinst runs the Upstart job by means of
invoke-rc.d resolvconf start
where /etc/init.d/resolvconf is a symlink to /lib/init/upstart-job.
Because resolvconf postinst runs the upstart job which enables updates it is not necessary for the postinst to enable updates itself. Currently it does so by triggering itself and enabling updates when "$1" = triggered. The section of the postinst that does this is redundant and should be removed. See attachment for patch. The file debian/triggers should also be removed.
(Background: In Debian, resolvconf.postinst triggers itself and only enables updates in the "triggered" phase; this avoid redundant update runs when resolvconf is installed along with packages whose postinsts induce resolvconf-updates.)
--
Thomas Hood
The attachment "resolvconf-
[This is an automated message performed by a Launchpad user owned by Brian Murray. Please contact him regarding any issues with the action taken in this bug report.]