https://bugzilla.redhat.com/show_bug.cgi?id=1919639
--- Comment #35 from Gregory PAKOSZ gregory.pakosz+redhat@gmail.com --- Though it shouldn't be necessary: IANAL but WTFPL v2 is supposed to be compatible with GPL v2 and v3. It's at least listed as such by Fedora: https://fedoraproject.org/wiki/Licensing:Main?rd=Licensing#Good_Licenses