FSF[1] as well as SPDX[2] request using the suffixes "-only" or "-or-later" with GNU licenses:
> Therefore, when you use SPDX license indicators, please use these: > GPL-2.0-only or GPL-2.0-or-later DEP-5 uses the bare form, i.e. "GPL-3" or "GPL-3+". I added this difference to the wiki page. What's not clear is how are we going to approach this discrepancy? Shall we a) ignore this, b) adopt SPDX/FSF naming, or c) suggest SPDX to stick to uniform naming convention, which is using "+" to denote later versions of a license? [1] https://www.gnu.org/licenses/identify-licenses-clearly.html [2] https://spdx.dev/ids/
