Thanks Matthias. Now I understand. So a package like gimp-data-extras (which gimp suggests in Debian) needs to have a metainfo file defining that this software is an addon which extends the functionality of another software. It's defined here https://www.freedesktop.org/software/appstream/docs/sect-Metadata-Addon.html
Thanks Matthias. Now I understand. So a package like gimp-data-extras (which gimp suggests in Debian) needs to have a metainfo file defining that this software is an addon which extends the functionality of another software. It's defined here https:/ /www.freedeskto p.org/software/ appstream/ docs/sect- Metadata- Addon.html