David Joyner wrote: > On 9/24/07, Jaap Spies <[EMAIL PROTECTED]> wrote: >> Jason Martin wrote: >>> My vote would be to change the sage license to "GPLv2 or later" and >>> try to get the Singular developers to do likewise. Mainly because >>> that is less work. >>> >>> Does changing Sage to "v2 or later" require Sage to adopted future GPL >>> changes? My interpretation is that it simply gives users the option >>> to re-distribute it according to later versions of the GPL. It >>> doesn't obligate Sage to adopt those future changes, does it? >>> >> If it says 'GPLv2 or any later version' version 2 still applies! > > "GPLv2 or later" means "you may copy, modify, and > redistribute the code using either license GPLv2 or > GPLv3 (at your preference)". You can't > use both at the same time since they are incompatible. > >
What do you mean by use both? Nobody will copy, modify and redistribute software with two or more incompatible licences. With 'Version 2 of the GPL or any later version', users will always be permitted to use it, and change it, according to the terms of GPL version 2, whatever higher versions are available. Jaap --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://sage.scipy.org/sage/ and http://modular.math.washington.edu/sage/ -~----------~----~----~----~------~----~------~--~---
