localhost kaiser # emerge avant-window-navigator
Calculating dependencies |
!!! All ebuilds that could satisfy "avant-window-navigator" have been masked.
!!! One of the following masked packages is required to complete your request:
- gnome-extra/avant-window-navigator-9999 (masked by: missing keyword)

For more information, see MASKED PACKAGES section in the emerge man page or
refer to the Gentoo Handbook.