argparse : Python command-line parsing library ( http://code.google.com/p/argparse/ )
catkin_pkg : Standalone Python library for the Catkin package system. ( http://wiki.ros.org/catkin_pkg )
distribute : distribute legacy wrapper ( http://packages.python.org/distribute )
kitchen : Kitchen contains a cornucopia of useful code ( https://fedorahosted.org/kitchen )
rosdistro : A tool to work with rosdistro files ( http://wiki.ros.org/rosdistro )
rosinstall : The installer for ROS ( http://wiki.ros.org/rosinstall )
rosinstall_generator : A tool for generating rosinstall files. ( http://wiki.ros.org/rosinstall_generator )
vcstools : Library for managing source code trees. ( http://wiki.ros.org/vcstools )
wstool : A tool for managing a workspace of multiple heterogenous SCM repositories ( http://wiki.ros.org/wstool )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a ros-gentoo
For Paludis use this rsync : rsync://gentoo.zugaina.org/ros-gentoo-portage
If you have a problem : ycarus(-at-)zugaina.org