Hi, On 10/21/2010 11:25 PM, Zoran Dželajlija wrote: >> Candidate is 7.7.1-4, NOT your wanted 7.8.2-2. > > Indeed, but a downgrade must not be attempted at priority 700 or even 990. > The relevant passage from apt_preferences(5) seem to be:
I know that part of apt_preferences(5) and your assumtion sounds correct. But! ;) I've just installed a plain Squeeze in a VM, added experimental to the sources and ran apt-get update && apt-get -t experimental install libgl1-mesa-dri. The followed apt-get upgrade told me 0 packages to upgrade (expected behaviour). But then I applied your preferences file, and even apt-get wants to downgrade libgl1-mesa-dri now. Even when I lower the priorities of libgl to 500 on all suites, apt still tries to downgrade it. > Since the newer package was explicitely installed manually, and the highest > pinned, target release package does _not_ exceed 1000, I believe a downgrade > _must not_ be attempted at all. Both apt-get and aptitude binaries > interpret the situation in this manner and don't try to downgrade, as > opposed to update-manager. As written above, MY apt does a downgrade, aptitude doesnt. UpdateManager uses APT's python bindings and never does stuff itself, so if any, this bug is to be searched in apt. Digging through src:apt bugs, I found this one: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=543966 Exactly your behaviour (and yes, as soon I pin libgl/testing to 100, it downgrades). I'd say this one is a duplicate of the above, the bug is in apt, not in UM. HOw about merging after raising the priority at apt to serious? > Sure, attaching outputs of "apt-cache policy" and "cat /etc/apt/preferences > /etc/apt/preferences.d/*". My preferences probably are somewhat broken > according to "apt-cache policy libgl-mesa-dri". They don't do what I > expected them to -- that is, make the latest libgl1-mesa-dri from either > testing, unstable or experimental the prefered candidate. However I don't > see a way how they could enable a downgrade. To reach that, it should be enough to have Package: libgl1-mesa-dri Pin: release a=experimental Pin-Priority: 500 Then all suites would have prio 500 (If you drop your handpinning to 300,700 etc) and get always the latest package available. Regards Evgeni -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
