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Re: Swiss Ephemeris Public License

On Tue, 2003-10-14 at 16:32, Edmund GRIMLEY EVANS wrote:
> Anthony DeRobertis <asd@suespammers.org>:
> > Given:
> >         A := BSD to all
> >         B := BSD to few, GPL rest
> >         C := GPL to all
> >         
> >         A => free
> >         C => free
> >         
> So you disagree with the claim that dual-licensing something under A
> and B is the same as licensing it under B?

Yes. It's different. If its dual licensed under A and B, then I can
chose to release my changes under A, and ignore B.

Just like how Qt was/is dual-licensed under both the QPL and the GPL; I
can use Qt under the GPL, and forget all about the QPL.

> Note that your Pascal-style assignments could be misunderstood. For
> example, licence B does not grant a GPL-licence for the original work
> to anyone; it merely requires that modifications be released under the
> GPL. Similary A, does not grant a BSD-licence for the original work;
> it merely requires modifications to be BSD-licensed (thus allowing the
> original authors to take those modifications proprietary).

If I can't release under than same terms as the original work, then the
license clearly fails DFSG 3 ("...allow them to be distributed under the
same terms...")

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