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.