Stephen J. Turnbull
stephen at xemacs.org
Fri Jun 13 10:21:09 BST 2008
Aaron Bentley writes:
> I suspect that adding the "Affero" clause would have induced grave
> backwards-compatibility concerns, since the first two versions did not
> have it.
No more than *any* other change to a copyleft license. All copyleft
licenses are mutually incompatible, that's all there is to it. The
only way out is dual-licensing.
 Yes, GPLv2, GPLv3, and GDFL are pairwise incompatible in all
directions. Don't let the fact that 2 < 3 fool you, it has no
relevance to compatibility. All that matters is that 2 <> 3.
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