darbackup : Wrapper script for app-backup/dar to make backups easier ( https://faracvs.cs.uni-magdeburg.de/projects/christsc-darbackup/ )
rdup : Generate a file list suitable for full or incremental backups ( http://www.miek.nl/projects/rdup )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a sunrise
For Paludis use this rsync : rsync://gentoo.zugaina.org/sunrise-portage
If you have a problem : ycarus(-at-)zugaina.org