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Re: A use case of GPLv3 section 7b

Le jeudi 06 septembre 2007 à 00:10 +0200, Francesco Poli a écrit :
> Hi all,
> I've just found out a real case where section 7b of GNU GPL v3 is
> actually used to impose specific restrictions.
> PySoy[1] is a Python library for 3D game development.
> It is released under the terms of the GNU GPL v3.
> Its licensing page[2] states:
> | Under section 7 of the GPLv3 we require additional terms specific to
> | the types of software created using PySoy. The term game authors
> | should be aware of is that the PySoy and GPLv3 logos must be presented
> | to players in a legible manner and the GPLv3 text be accessible to
> | players (section 7b).
> | 
> [...]
> | We provide textures for these logos and an easy mechanism to display
> | the GPLv3 license text as builtin classes so that this is as painless
> | as possible.
> Now I wonder: is this restriction really within the bounds of what
> section 7b allows to impose?

I think the authors have completely misunderstood the purpose of section
7. This section doesn't allow to add further restrictions, but to add
further *permissions*. Like, for example, permitting to link the program
with a library that requires preservation of reasonable legal notices.

 .''`.           Josselin Mouette        /\./\
: :' :           josselin.mouette@ens-lyon.org
`. `'                        joss@debian.org
  `-  Debian GNU/Linux -- The power of freedom

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