bzip2 : A high-quality data compressor used extensively by Gentoo Linux ( http://www.bzip.org/ )
cpio : A file archival tool which can also read and write tar files ( http://www.gnu.org/software/cpio/cpio.html )
gzip : Standard GNU compressor ( http://www.gnu.org/software/gzip/ )
tar : Use this to make tarballs :) ( http://www.gnu.org/software/tar/ )
xz-utils : utils for managing LZMA compressed files ( http://tukaani.org/xz/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a usr-gentoo
For Paludis use this rsync : rsync://gentoo.zugaina.org/usr-gentoo-portage
If you have a problem : ycarus(-at-)zugaina.org