Getting the overlay

• Ensure conf_type is set to repos.conf in /etc/layman/layman.cfg:

$ grep '^conf_type' /etc/layman/layman.cfg
conf_type : repos.conf

• Run layman-updater -R to rebuild layman's repo.conf files

# Requires layman 2.3.0 or greater
# layman-updater -R

• Finally, add the overlay:

# Installs (by default) to /var/lib/layman/installed.xml
# layman -o 'https://raw.githubusercontent.com/sirjaren/gentoo-overlay/master/sirjaren.xml' -f -a sirjaren

• Or do it manually

$ cd /etc/layman/overlays/
$ wget 'https://raw.githubusercontent.com/sirjaren/gentoo-overlay/master/sirjaren.xml'
# layman -a sirjaren