This new behaviour will break some FAI installations. It would be very good, if such an APT::Get:: option will be added. I'm hoping to have such an option also for apt-get since a long time. This option should also ignore package names which are unknown, for example due to a typo. Using the new option, following command should also result in exit code 0:
# aptitude install xyz123 Couldn't find any package whose name or description matched "xyz123" For automated installations, we would love to have a feature that just ignores unknown package names, or packages names which have no installation candidate. I expect for apt-get/aptitude that if I give a list of package names to be install like # aptitude install a b c d and c is a package name which is not known, using this option the package c will be removed from the list (or just ignored) but packages a, b and d will installed. -- regards Thomas