Attached to: OpenSolaris From a Linux Admin and User Perspective
He said 'other nix os's' not 'Linux'. The GPL may be incompatible with the CDDL, but the BSDL isn't, and bits of Solaris, such as ZFS and DTrace, have found their way into FreeBSD.
Saying the CDDL is incompatible with the GPL is misleading - the CDDL doesn't say anything about code not explicitly released under it. It is the GPL which imposes constraints on third-party code. If Linux used a more permissive license then it would be able to use OpenSolaris code, and OpenSolaris would be able to use Linux code just as it used to use a lot of BSD code back in the SunOS days.

