$ paludis -pi1 compiz-fusion --dl-reinstall-scm always --compact --show-reasons none
Building target list... 
Building dependency list...

These packages will be installed:

* x11-wm/compiz::desktop-effects [R 9999] dbus -fuse gnome gtk -kde -kde4 svg xcb
* x11-libs/compiz-bcop::desktop-effects [R 9999]
* x11-plugins/compiz-fusion-plugins-main::desktop-effects [R 9999] gnome
* x11-plugins/compiz-fusion-plugins-extra::desktop-effects [R 9999] gnome
* x11-plugins/compiz-fusion-plugins-unsupported::desktop-effects [R 9999]
* x11-wm/emerald::desktop-effects [R 9999]
* x11-themes/emerald-themes::desktop-effects [R 9999]
* x11-libs/libcompizconfig::desktop-effects [R 9999]
* dev-python/compizconfig-python::desktop-effects [R 9999]
* x11-apps/ccsm::desktop-effects [R 9999]
* x11-libs/compizconfig-backend-gconf::desktop-effects [R 9999]
* x11-wm/compiz-fusion::desktop-effects [R 9999] <target> gnome -kde unsupported

Total: 12 packages (12 rebuilds)