So Swapnut uses an old snapshot, not GPLed? This means that Swapnut can not be updated without becoming GPL too, since all the new code is GPLed. When someone or LW itself does patch or improve LW code, then this patch can't be apllied to Swapnut (patches on GPL are GPLed too, since they build up on GPLed code). It could be theoretically different, when someone innovates brand new code (not reusing GPLed code), but I guess all the LW code is GPLed?

Greets, Moak