[Fedora-packaging] Licensing guidelines for AppStream project_license

Hello packagers, During the package review of qvge [1], the following question came up: Are the any requirements placed on the contents of AppStream metadata, particularly the field project_license [2]? It feels natural that is MUST be the same (module differences in notation) as specfile License, since both have the same meaning. However, I cannot find anything in Licensing Guidelines about this. In my experience, this comes up quite often, since upstreams often have bundled dependencies or other copy-pasted code with different license than upstream's own code, yet AppStream metadata, LICENSE file, README and so only list upstream's own license. [1]: https://bugzilla.redhat.com/show_bug.cgi?id=1913870 [2]: https://www.freedesktop.org/software/appstream/docs/chap-Metadata.html#ta... Otto