(chroot) jurchen / # emerge --depclean

 * Always study the list of packages to be cleaned for any obvious
 * mistakes. Packages that are part of the world set will always
 * be kept.  They can be manually added to this set with
 * `emerge --noreplace <atom>`.  Packages that are listed in
 * package.provided (see portage(5)) will be removed by
 * depclean, even if they are part of the world set.
 *
 * As a safety measure, depclean will not remove any packages
 * unless *all* required dependencies have been resolved.  As a
 * consequence, it is often necessary to run `emerge --update
 * --newuse --deep @world` prior to depclean.

Calculating dependencies                   ... done!
 * Dependencies could not be completely resolved due to
 * the following required packages not being installed:
 *
 *   media-libs/sdl-mixer pulled in by:
 *     games-arcade/lbreakout2-2.6.3
 *
 *   virtual/awk pulled in by:
 *     app-text/yelp-tools-3.4.1
 *
 *   media-libs/sdl-mixer[vorbis] pulled in by:
 *     games-simulation/lincity-ng-2.0
 *
 *   sys-process/lsof[rpc] pulled in by:
 *     app-forensics/rkhunter-1.4.0
 *
 *   dev-python/beautifulsoup[python_targets_python2_7(-),python_targets_python3_2(-),-python_single_target_python2_6(-),-python_single_target_python2_7(-),-python_single_target_python3_1(-),-python_single_target_python3_2(-),-python_single_target_python3_3(-)] pulled in by:
 *     dev-python/lxml-3.0.1
 *
 *   media-libs/sdl-mixer pulled in by:
 *     games-simulation/simutrans-0.102.2.2
 *
 *   >=sys-auth/polkit-0.110 pulled in by:
 *     sys-auth/consolekit-0.4.5_p20120320-r1
 *
 * Have you forgotten to do a complete update prior to depclean? The
 * most comprehensive command for this purpose is as follows:
 *
 *   emerge --update --newuse --deep --with-bdeps=y @world
 *
 * Note that the --with-bdeps=y option is not required in many
 * situations. Refer to the emerge manual page (run `man emerge`)
 * for more information about --with-bdeps.
 *
 * Also, note that it may be necessary to manually uninstall
 * packages that no longer exist in the portage tree, since it may
 * not be possible to satisfy their dependencies.
(chroot) jurchen / #