Bug#860045: [Pkg-utopia-maintainers] Bug#860045: Bug#860045: Please don't use /var/run/$foo in network-manager anymore

[Alf Gaida]

> Please use the actual path, not some non-existing abbreviation.
will do so
> This is upgrade code from pre-jessie. This can be dropped.
i'm fine with - but we need some kind of daemon restart


> We should probably check for both paths here, for upgrade safety, i.e
> whether /etc/resolv.conf points to the old *or* new path.
ok, better safe than sorry.
diff --git a/debian/network-manager.preinst b/debian/network-manager.preinst
index 9fff61d..b4c8a05 100644
--- a/debian/network-manager.preinst
+++ b/debian/network-manager.preinst
@@ -45,6 +45,11 @@ case "$1" in
        if dpkg --compare-versions "$2" lt "1.2.2-2"; then
            deb-systemd-helper purge NetworkManager-wait-online.service
        fi
+
+       # Delete a symlink that points to /var/run
+       if [ "$(readlink /etc/resolv.conf)" = 
/var/run/NetworkManager/resolv.conf ] ; then
+           rm -f /etc/resolv.conf
+       fi
Why is that necessary? This appears to be a risky change with no clear
explanation why it's needed.

in case the symlink points to the old location just remove the symlink - 
an alternative would be the empty file - so NetworkManger can recreate 
the link to the new location at the next start - there is no risk in 
this. this is the same as in the other p-scripts - but you are right, 
the intention should be documented

Will rework the patch