These ebuilds come from http://www.calculate-linux.org.
If you have some problems, go to the official site first.
tw_cli : 3ware SATA+PATA RAID controller Command Line Interface tool ( http://www.3ware.com/kb/article.aspx?id=14847 )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a calculate
For Paludis use this rsync : rsync://gentoo.zugaina.org/calculate-portage
If you have a problem : ycarus(-at-)zugaina.org