x11-apps/xrandr-1.3.0 installs the program xkeystone that seems to be something to help with transform computation, but it is written in the "nickle" language, which is a "toy" language Keith Packard uses. I'm not sure if xkeystone is useful for our users or not. In any case this is installed and can't work right now, so either nickle should be packaged and added to xrandr'd RDEPEND, the program removed from installation, or split out into a separate package to not impose a nickle dependency on those that don't need to compute transforms.
Fixed in -1.3.0 and -9999 without a revbump. Thanks