The race to replace Redis

> I'm not disagreeing with the point you are making, but it seems to me when it comes to copyright nothing is obvious. In fact the definition of "derivative work" applied to software is downright opaque.

Given that - OF NECESSITY - all copyright licences defer to the law and make no attempt to define it themselves, QUELLE SURPRISE.

The FSF have made it quite clear that they consider linking to create a derivative work, but they have (sensibly) made no attempt to define a linked work as being derivative.

Pick is a p-code engine - I consider the GPL as pretty much useless for trying to get complete works released as GPL. Because it doesn't link, applying the GPL to a Pick program probably is - in practical terms - pretty much identical to applying the MPL, a much weaker copyleft licence.

Yes it's a mess, but that's basically because you're trying to fit mathematical logical concepts into a framework designed for literary not-necessarily-logical works. Round pegs square holes and all that ...

Cheers,
Wol