Change the unversioned atoms in package keywords to the following versioned atoms. (For example, change "x11-base/xorg-x11" to "~x11-base/xorg-x11-7.0".)

~x11-base/xorg-server-1.0.2
~x11-base/xorg-x11-7.0
~x11-drivers/xf86-input-keyboard-1.0.1.3
~x11-drivers/xf86-input-mouse-1.0.4
~x11-drivers/xf86-video-nv-1.0.2.0
~x11-drivers/xf86-video-vesa-1.0.1.3