It seems to me like there are a number of things that should be able to hint that you want some particular slots of particular packages, such that --depclean doesn't remove them and emerge world updates them.
For example, it shouldn't remove the version of gentoo-sources that your /usr/src/linux symlink points to. It shouldn't remove the version of emacs you've got eselected. It shouldn't remove a version of tomcat that you've got in your default runlevel. It shouldn't remove the Java VM that java-config is set to. For each of these, I think it should handle this information as if the particular slot were in your world file, so long as the system is configured that way (that is, it shouldn't actually record it in the world file that way, but it should act like it saw it there). Would this be a generally good concept, if I came up with a suitable implementation? (Now that the code is set up to carry out the implications of such a setting) -Daniel *This .sig left intentionally blank* -- gentoo-portage-dev@lists.gentoo.org mailing list