Re: [Trisquel-users] Is there something we can do about Virtualbox?

[hd-scania]

CDDL is FSF approved but GPL incompatible, see  
https://www.gnu.org/philosophy/license-list.html#CDDL,
It has a weak per-file copyleft (like version 1 of the MPL) which makes it  
incompatible with our GPL. This means modules covered by the GPL and ones  
covered by the CDDL cannot legally be linked together. We urge you not to use  
the CDDL for this reason.