Hi Jeroen, On Wed, Nov 10, 2010 at 8:01 PM, Jeroen Demeyer <jdeme...@cage.ugent.be> wrote: > Short question: it is legal to include code in Sage which is licenced > under GPL version 3 or later? (my impression is no, because Sage is > GPLv2+).
It depends on whether your're talking about the Sage library (i.e. the package sage-x.y.z.spkg) or some other spkg. Components of Sage (spkg's) are covered by GPL compatible licenses. As far as I know, there is no single license that covers the whole of Sage. Anything that goes into Sage must be licensed under a GPL compatible license. For example, the Sage library is covered by GPLv2+ and the policy (as I understand it) is to include only code licensed under GPLv2+. We don't include code under the GPLv3+ in the Sage library. Apart from the Sage library, spkg's must be licensed under a GPL compatible license. This means it can be licensed under the GPLv3+, which is the case with the standard spkg GLPK. -- Regards Minh Van Nguyen -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
