Package: apt Version: 0.8.10.3 Severity: important A note on the version information for this bug: it is present in both wheezy and squeeze and probably earlier.
The default pkgProblemResolver::Scores::Important is greater than pkgProblemResolver::Scores::Required. According to my reading of the Debian policy document, Priority: required should be higher than Priority: important: http://www.debian.org/doc/debian-policy/ch-controlfields.html#s-f-Priority http://www.debian.org/doc/debian-policy/ch-archive.html#s-priorities Code that needs to be adjusted here is PrioMap in pkgProblemResolver::MakeScores() in apt-pkg/algorithms.cc and if you change the order then probably you also need to adjust the order in PrioList in ./apt-pkg/deb/deblistparser.cc. static debListParser::WordList PrioList[] = {{"important",pkgCache::State::Important}, {"required",pkgCache::State::Required}, {"standard",pkgCache::State::Standard}, {"optional",pkgCache::State::Optional}, {"extra",pkgCache::State::Extra}, {}}; void pkgProblemResolver::MakeScores() { unsigned long Size = Cache.Head().PackageCount; memset(Scores,0,sizeof(*Scores)*Size); // Important Required Standard Optional Extra int PrioMap[] = { 0, _config->FindI("pkgProblemResolver::Scores::Important",3), _config->FindI("pkgProblemResolver::Scores::Required",2), _config->FindI("pkgProblemResolver::Scores::Standard",1), _config->FindI("pkgProblemResolver::Scores::Optional",-1), _config->FindI("pkgProblemResolver::Scores::Extra",-2) }; pabs@chianamo ~ $ sudo apt-get -o Debug::pkgProblemResolver=yes -o Debug::pkgProblemResolver::ShowScores=yes dist-upgrade 2>&1 | head -n30 Reading package lists... Building dependency tree... Reading state information... Starting Settings used to calculate pkgProblemResolver::Scores:: Important => 3 Required => 2 Standard => 1 Optional => -1 Extra => -2 Essentials => 100 InstalledAndNotObsolete => 1 Depends => 1 Recommends => 1 AddProtected => 10000 AddEssential => 5000 Show Scores 24475 libc6 [ amd64 ] < 2.13-37 -> 2.13-38 | 2.16-0experimental1 > ( libs ) 12428 multiarch-support [ amd64 ] < 2.13-37 -> 2.13-38 | 2.16-0experimental1 > ( libs ) -- bye, pabs http://wiki.debian.org/PaulWise
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