Suppose a package XX has a version-A under GPL-V2 and a forthcoming
version-B. Suppose also that version -B is a severe modification of
version-A. Now if version-B is to be released under GPL-V3 and suppose
the earlier version is also to be maintained for some time, then I
believe that the code from version-A would not be usable in version-B.
Or how is this migration handled ?
Member, Cal. Math. Soc