This afternoon, Sean Hammond wrote: > They claim on their website (http://panda3d.org/) that Panda3D is free > software, and the license looks fine to me, This section: > > "Licensor hereby grants to any person obtaining a copy of the > Software a nonexclusive license to use, copy, modify, merge, publish, > distribute, sublicense, and/or sell copies of the Software, and to > permit persons to whom the Software is furnished to do so, on an "AS > IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or > implied, subject to these terms and the License." > > seems to me to provide free software compliance, and I don't see > anything elsewhere in the license that violates it. I've never had to > assess a license before though, and I'm a little distrustful of > Disney, so if anyone can point out that this short license is not in > fact free software I'd appreciate the help: > > PANDA 3D SOFTWARE LICENSE AND DOWNLOAD TERMS <snip> > An electronic copy of the source code for all modifications > made to the Software are to be forwarded to Licensor at > email@example.com within 90 days of the date of the > modifications. This clause makes it non-free, unfortunately. It fails the 'Desert Island' test that provides guidence on the Gnu project's third freedom and/or the DFSG/Open Source Definition's third criterion, that of freedom to make derived works. Specifically, the notice requirement means that you are /not/ free to make derived works, there are extra requirements to fulfill if you want to do so. OK, -- Andrew Aylett firstname.lastname@example.org | www.aylett.co.uk 1.79 x 10^12 furlongs per fortnight... -- it's not just a good idea, it's the law!
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