* x11-base/xorg-server
    layman:                  (1.4.0.90-r3 (in ::loongson))X (1.5.2 (in ::loongson))X (1.5.2 (in ::steev))X (1.5.3 (in ::loongson))X (1.5.3 (in ::steev))X (1.5.3-r7 (in ::gpe))X (1.6.0 (in ::loongson))X (1.6.2-r1 (in ::loongson))X (1.6.3 (in ::loongson))X (1.6.3.901 (in ::loongson))X (1.6.3.901-r2 (in ::loongson))X (1.6.5 (in ::loongson))X (9999 (in ::THE))X (9999 (in ::loongson))X (9999 (in ::x11))X {:0} 
    gentoo:                  1.5.3-r6 1.5.3-r7(~) 1.6.3.901-r2 1.6.4(~) 1.6.5(~) 1.7.1(~) {:0} 
    installed:               1.7.1* {:0} 
    Description:             X.Org X servers
    Homepage:                http://xorg.freedesktop.org/
    License:                 MIT
    Installed time:          Wed Oct 28 15:36:58 CET 2009
    Use flags:               (-debug) (-dmx) (hal) (ipv6) (-kdrive) (-minimal) (nptl) (-sdl) (-tslib) (xorg) Build Options: -trace
    From repositories:       gentoo
    Installed using:         paludis-0.42.0-git-ebfdfde529f301b31dacf8a5f6e724f25c40b431

Key to mask reasons:

* X: unavailable
* ~: keyword (unstable accepted)