On Apr 16, 2021, at 21:30, Joshua Root wrote: >> And is this really true that a GPL-2 program like Hydrogen is not >> distributable if it links with a GPL-3 / LGPL-3 library like Qt5? > > Yep. That's why the FSF has always recommended licensing under version n or > later of the GPL rather than just version n. > > <https://www.gnu.org/licenses/gpl-faq.html#AllCompatibility>
Thanks. I think Hydrogen probably is GPL-2 or later since it says that in the source code headers but its README just says GPL-2. I'm asking for clarification from upstream.
