My personal Gentoo Portage overlay
mkdir /etc/portage/repos.conf
curl https://raw.githubusercontent.com/JoeNyland/gentoo-overlay/master/joenyland.conf -sLo /etc/portage/repos.conf/joenyland.conf
emaint sync -r joenyland
layman -o https://raw.githubusercontent.com/JoeNyland/gentoo-overlay/master/repositories.xml -f -a joenyland