ubuntu / # emerge xorg-server $(qlist -IC x11-drivers)

Calculating dependencies... done!

emerge: there are no ebuilds built with USE flags to satisfy "x11-libs/libdrm[libkms,video_cards_vmware]".
!!! One of the following packages is required to complete your request:
- x11-libs/libdrm-2.4.23 (Change USE: +video_cards_vmware)
(dependency required by "x11-drivers/xf86-video-vmware-11.0.3" [ebuild])
(dependency required by "x11-drivers/xf86-video-vmware" [argument])
ubuntu / #
ubuntu / #
ubuntu / # nano /etc/portage/package.use
ubuntu / # emerge -av xorg-server $(qlist -IC x11-drivers)

These are the packages that would be merged, in order:

Calculating dependencies... done!

!!! All ebuilds that could satisfy ">=x11-libs/libdrm-2.4.24[video_cards_nouveau]" have been masked.
!!! One of the following masked packages is required to complete your request:
- x11-libs/libdrm-2.4.25 (masked by: package.mask)
- x11-libs/libdrm-2.4.24 (masked by: package.mask)

(dependency required by "x11-drivers/xf86-video-nouveau-0.0.16_pre20110323" [ebuild])
(dependency required by "x11-drivers/xf86-video-nouveau" [argument])
For more information, see the MASKED PACKAGES section in the emerge
man page or refer to the Gentoo Handbook.