reassign 819845 libc6 retitle 819845 libc6: support debconf reconfiguration of libraries/restart-without-asking thanks
On Sun, Apr 03, 2016 at 08:02:58AM +0800, 積丹尼 Dan Jacobson wrote: > User sees > > If you just want to see the current configuration of a package, see > debconf-show(1) instead. > > User does > > # debconf-show libc6 > * glibc/restart-services: exim4 cron atd > glibc/kernel-not-supported: > glibc/restart-failed: > glibc/disable-screensaver: > * libraries/restart-without-asking: false > * glibc/upgrade: true > glibc/kernel-too-old: > > User does > # dpkg-reconfigure libc6 > # > > So, kindly on the dpkg-reconfigure man page, mention how to reconfigure > [all!] the items shown by debconf-show! Thank you. No, sorry. There is no such general mechanism beyond simply using dpkg-reconfigure, whose defaults generally arrange to get a package to re-show all of its questions; it's up to the package to implement reconfiguration appropriately. Things do generally work fine if debconf configuration is implemented in the way recommended in the debconf documentation. It is not necessarily appropriate to be able to reconfigure every item shown by debconf-show, because some of them may be used for internal state tracking by the package's maintainer scripts, or depend on the current situation at the time when the maintainer scripts are run; almost all of libc6's questions fall into one of these two categories. Going through them each in detail: * glibc/restart-services: The value of this question is reset and re-detected from the set of currently-running services each time the question is asked. Reconfiguration wouldn't be useful. * glibc/kernel-not-supported, glibc/restart-failed, glibc/disable-screensaver, glibc/kernel-too-old: These are notes or errors; there's nothing to reconfigure. * glibc/upgrade: If you answer no to this question, then the upgrade is stopped and the way to continue it is by getting dpkg to unpack the package again, not by reconfiguring. If you answer yes, then the upgrade continues; a mere reconfiguration wouldn't be able to roll that back, so there's no point offering reconfiguration of this question. Arranging to re-show all of these would have no value other than completism, and almost certainly negative value due to the sheer confusion it would cause. Even if it were possible, which it isn't, I'm not going to provide instructions on doing a thing that shouldn't be done. However, there's one part of this where your request makes sense. libraries/restart-without-asking is more like a normal debconf question. It isn't reset before being asked, and its value influences the behaviour of future upgrades. It seems to me to be a clear bug that it isn't possible to reconfigure this using "dpkg-reconfigure libc6". Doing this might be a little more involved than usual since libc6 has complex maintainer scripts and this question is asked in the preinst, but it should be possible to make it work. -- Colin Watson [cjwat...@debian.org]
