- fix library updates special cases: should note all potential library packages as conflicts. Then save_old_libraries can split stuff off old sets to keep libraries that are not in the new packages. There's only one slightly tricky part, which concerns moving stuff that's not really needed out of $set->{older}. - in interactive mode, make it ask questions whenever the user could get frustrated. - finish pulling the pkg_add code into Add.pm/Update.pm. - figure out when to continue after some errors, which should not stop a full update, for instance... or ignore already installed packages (mostly done). - make sure all user-interface is done through a few functions, so that it's easy to plug another interface in (mostly done) - don't close Location unconditionally while looking for updates. In most cases, we're going to install this package right away, so we should try to keep it open to avoid spurious ftp disconnects. - get an update path for libraries to be able to adjust dependencies correctly. - allow pkg_add newpackage to do updates or install.