Clarification of GPL version

[aaronpuchert]

I'm trying to package this plasmoid and have wondered whether I should use GPL-2.0-only or GPL-2.0-or-later as SPDX identifier. The license alone doesn't tell me that, because it's the same for both. The only difference are the file headers, but there aren't any.

[solbu]

In Mageia we use the «or later» identifier (GPLv2+).