Code listing 2.1: echo "x11-base/xorg-x11 static" >> /etc/portage/package.use emerge x11-base/xorg-x11 Code listing 2.2: echo "x11-base/xorg-x11 dlloader" >> /etc/portage/package.use echo "x11-base/xorg-x11 ~x86" >> /etc/portage/package.keywords emerge x11-base/xorg-x11 This seems to be outdated because newer x11-base/xorg-x11 ebuilds don't have these USE flags (dlloader and static).
Already fixed thanks to Zaid A. and Alexander Gabert.