>>>>> On Sun, 22 Sep 2019, Matt Turner wrote: > An idea to consider: use SPDX license identifiers (see > https://spdx.org/licenses/) > For GPL 2 they are "GPL-2.0-only" and "GPL-2.0-or-later" Yeah, they have a history of using silly names. What does 2.0 mean? There is no such version of the GPL, and with Gentoo versioning rules, 2 is not equal to 2.0. Another funny thing is that they first introduced a "+" operator, but then decided not to use it for the GPL family, but append "-or-later" instead. (And IIUC, "GPL-2.0-only+" is valid in their scheme and equivalent to "GPL-2.0-or-later".) Ulrich