On 11/26/2013 11:35 PM, Nathaniel Smith wrote:
> I believe R is dual licensed GPLv2 and GPLv3. So it is
> legally possible to take the GPLv3 option and then license
> rpy2 as AGPLv3, because GPLv3 has an
> exception to make it compatible with AGPLv3. But just
> releasing rpy2 with the same (dual) license as R seems
> simpler


What is the R License?

http://cran.r-project.org/doc/FAQ/R-FAQ.html#Legalese

How Permissive?

This conversation started asking about the LGPL (more
permissive) and has moved to talking about the AGPL
(less permissive).  That suggests that the licensing
goals are not very clear.

For a project like RPy, adding restrictions is unlikely
to prove beneficial.  And it would be more than odd for
the license to be more restrictive than R's license.
On this basis, one would say GPL 2 is the least permissive
license RPy should consider.  (Although naturally license
choice is up to whoever produces the code.)

Is RPy a Derivative Work?

Ask a lawyer, but probably not. In my opinion, the LGPL
(or even BSD) is available as a choice, if the project
wants it.  Personally, I would encourage BSD as most
likely to generate code contributions for this project.
It is also most comfortable for the Python scientific
computing community, in my view.

Cheers,
Alan Isaac


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