Gentoo Packages

media-libs/opencv: Enable <pkg>x11-libs/gtk+</pkg>:3 support
net-misc/spice-gtk: Build the spice client (spicy), requires <pkg>x11-libs/gtk+</pkg>:3

Package	Local Description (use.local.desc)	Metadata Description (metadata.xml)
media-libs/opencv	-	Enable <pkg>x11-libs/gtk+</pkg>:3 support
net-misc/spice-gtk	-	Build the spice client (spicy), requires <pkg>x11-libs/gtk+</pkg>:3

USE Flag: gtk3