On 2010-11-11 17:21, Dima Pasechnik wrote:
> On Nov 11, 7:20 pm, Jeroen Demeyer <jdeme...@cage.ugent.be> wrote:
>> On 2010-11-11 11:53, Dr. David Kirkby wrote:
>>
>>> The license must be a GPL version v2+ compatible license.
>>
>> Note that GPLv3 is NOT compaible with GPLv2!  I quote 
>> fromhttp://www.gnu.org/licenses/license-list.html#GNUGPL
> 
> but we talk about GPLv2+ (i.e. GPLv2 or a later version, as you
> please)

That's even worse in terms of compatibility (because then the licence
must be compatible with GPLv2 and also with future versions of the GPL).
 So if code is not compatible with GPLv2, it certainly will not be
compatible with GPLv2+.

This in fact raises a good point: if Sage contains code licenced under
GPLv2 only, we cannot distribute it under GPLv2+!


Jeroen.

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