On Mon, 28 Sep 2009, dmotd wrote:
i'm just looking at the license now and i'm not sure that this is acutally a problem.. looks like an open style license.. not for resale, non-commerical educaton use only, must credit authors and distribute license.
GPL forbids any clauses about non-commercial, non-military, education-only, and any other clauses restricting the freedom to use. (section 7 out of 17)
http://www.gnu.org/copyleft/gpl.html
But some other documents may be easier to interpret (but the following are about what is a free license, they aren't about GPL-compatibility per se).
FSF's Free Software Definition lists four essential freedoms, the first one being: «The freedom to run the program, for any purpose».
http://www.gnu.org/philosophy/free-sw.html
OSI's Open Source Definition's sixth item (out of ten) states: «the license must not restrict anyone from making use of the program in a specific field of endeavor.»
http://www.opensource.org/docs/definition.php
I think that it's clear enough.
What's more difficult to grasp is how all the different licenses interact with each other when you use or don't use plugins together...
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