With a nvidia card and the x11-drivers/nvidia-drivers > 341, you need to emerge nvidia-drivers USE="static-libs tools" first.
vi /scratch/portage/media-video/bino/bino-1.6.1-r2.ebuild
RDEPEND=" [...]
video_cards_nvidia? ( || ( x11-drivers/nvidia-drivers[tools,static-libs] media-video/nvidia-settings ) )
[...]
See:
http://linux.overshoot.tv/media-video/nvidia-settings
External resources
