Is that even possible; how can contributors legally provide patches under a license that is different from the source they are patching? How do you know if there is any "GPLv2 only" code left in the project? Do you track license usage by the code line? Can you add a trailing space to every single line of the code and release it on github as "GPLv2 and later" (hey, it's a patch), thus getting rid of the whole "GPLv2 only" clause?
Can you add a trailing space to every single line of the code and release it on github as "GPLv2 and later" (hey, it's a patch), thus getting rid of the whole "GPLv2 only" clause?
No, a patch that doesn't completely replace existing code can not alter it's copyright. As long as you can insure that your GPLv2 code is in the project and not easily replaced, you control the project's license.
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Is that even possible; how can contributors legally provide patches under a license that is different from the source they are patching? How do you know if there is any "GPLv2 only" code left in the project? Do you track license usage by the code line? Can you add a trailing space to every single line of the code and release it on github as "GPLv2 and later" (hey, it's a patch), thus getting rid of the whole "GPLv2 only" clause?
No, a patch that doesn't completely replace existing code can not alter it's copyright. As long as you can insure that your GPLv2 code is in the project and not easily replaced, you control the project's license.