~ # emerge -s sabayon-sources
Searching...   
[ Results for search key : sabayon-sources ]
[ Applications found : 1 ]
 
*  sys-kernel/sabayon-sources
      Latest version available: 2.6.23-r1
      Latest version installed: 2.6.22
      Size of files: 44,650 kB
      Homepage:      http://www.sabayonlinux.org
      Description:   Full sources including the Gentoo patchset and SabayonLinux ones for the 2.6 kernel tree
      License:       GPL-2
~ # ls /usr/src/