I think it would be nice if DirectFB would show the availiable/selected input devices on "emerge DirectFB -pv", the same way xorg-server does. This way it wouldn't be necessary to inspect the ebuild to figure out that it actually requires some input devices to be defined, and which devices would be supported once built. It would take something like this to get the desired effect: IUSE="${IUSE_INPUT_DEVICES} useflag1 useflag2 (...)"
*** This bug has been marked as a duplicate of 133327 ***
*** Bug 168699 has been marked as a duplicate of this bug. ***