Gentoo - SysAdmin - Installation - 2.2
From Kolab Wiki
The core package of the Kolab2-Gentoo Server is represented by app-admin/pardalys. Once you installed the kolab overlay you can install it with:
pardalys currently requires puppet. To install puppet, you may need to add ipv6 to your USE flags for dev-lang/ruby. To do this, simply add the following line to /etc/portage/package.use:
Also, before running the "pardalys" command, you should run "update-eix".