A Dissabte, 25 de juny de 2011 18:01:54, Cédric Krier va escriure: > On 25/06/11 10:18 -0500, Michael Hipp wrote: > > On 6/25/2011 9:12 AM, Cédric Krier wrote: > > >After that, you must define what you mean by "closed-source app"? > > > > I'm developing a program that will be sold/rented to small > > businesses. The sponsor of the project is not willing (yet) to open > > source our own code. If I were to make use of (make python calls > > into?) Tryton in a program distributed to these businesses, would I > > then be required to open source our code? > > Again INAL, but here is our (B2CK) understanding of the GPL. > > Your code must be under the GPL if it is a derivative work of Tryton. > Once this is said, we must define what is and what is not a derivative work > and there is no simple answer. We think it should be answered case by case. > > There is difference common cases: > > - you modify directly Tryton code, so it must be under the GPL > > - you write a small module that makes simple modifications on the > behavior of existing Tryton modules (like adding few field on Sale Order). > Then it is clearly a derivative work and must be under the GPL. > > - you write an all new module that does something completly new that is > not in Tryton (for example (at this date) a payrol module). Then it > can be seen as an original work and you can release it under the license > of your choice.
I'm not a lawyer either but I don't think that's possible. At least, it is not with C/C++ and compiled applications in general. That's why KDE has it's libraries released under LGPL instead of GPL, because otherwise nobody could create non-GPL applications with their libraries. In the case of Python may be a bit different because it's not compiled but IMHO the same logic would apply. So if you intend to extend Tryton by creating module which uses Tryton libraries, you're enforced to using the GPL license. You would not be forced to that license if you created an application which communicated with Tryton using the RPC interface. -- Albert Cervera i Areny http://www.NaN-tic.com OpenERP Partners Tel: +34 93 553 18 03 http://twitter.com/albertnan http://www.nan-tic.com/blog -- [email protected] mailing list
