Put this config into /etc/paludis/repositories/pd-overlay.conf:
location = ${ROOT}/usr/local/overlays/pd-overlay/
sync = svn+https://pd-overlay.svn.sourceforge.net/svnroot/pd-overlay/pd-overlay/
master_repository = gentoo
format = ebuild
names_cache = /var/empty
write_cache = /var/empty
Run paludis --sync x-pd-overlay the first time to import the overlay.