Neither of your lawyers are any more right than the other because the GPL language is vague, interpretations are shifty, and what specifically counts as a derivative work in the GPL's terms has not yet been vetted by a US court.
Which is yet another reason to avoid the GPL and the insanity it causes.</flame> :p
Posted Apr 4, 2011 1:47 UTC (Mon) by jhubbard (guest, #5513)
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Your comment applies to any license or contract not just the GPL. If it's not been vetted by a court, it's open to interpretation. Most people try not to end up in court.
While the specific clause about derivative work may not have been cleared up yet, there was a win against Westinghouse. Don't forget all of the victories in Germany as well.