On 2018-08-01 18:05, Bernhard Schmidt wrote: > So the file is there and not marked as conffile, because it has been > created in postinst. Now in Buster the file is properly shipped as > conffile (since commit 9ddbb41a71236815d246180b454850ec4ef7862d, > included in 9.11.2+dfsg-6. > > It is only appearing now because the named.conf.options has now been > changed from the version contained in Stretch in 9.11.4+dfsg-2.
> But the > underlying bug is in Stretch. Not really. There is nothing wrong with the handling in stretch. Using conffiles is just superior :-) You just need to migrate properly ... > I have no idea how to properly deal with this. Suggestion: In the preinst check whether you are upgrading from << 9.11.2+dfsg-6 and whether the file matches the version installed in stretch (md5sum/...) and move it aside (maybe there were more possible files installed by older versions, check for all of them). In the postinst delete the backup. Restore it on failed-upgrade. If the file was manually modified (i.e. does not match any known hash), do nothing and let dpkg prompt the user. I don't mind reviewing some patches. Andreas
