Re: why is graphviz package non-free?
> i have read that graphviz is licensed under the Common Public License
> Version 1.0 . The FSF consider this license as free and also in the
> debian-legal mailing-list archive i couldn't find a statement that debian
> have a different view.
>  http://www.graphviz.org/License.php
This is the Common Public License, version 1.0, with the revision
right solely tied to IBM. This is a bit surprising, but doesn't have
any impact on the DFSG-freeness of the this license.
> So why this package is in non-free?
Historical reasons. The package can probably be moved to main.