I added metainfo.xml files to octave-symbolic and octave-doctest: they have both had them since at least January 2016. But neither shows up in Gnome Software, unless I install them from the command line. If I do install them on the command line, then they both appear under Octave and in searches, as expected. This is true with either "gnome-software --prefer-local" or just "gnome-software". *BUT* I think the desired user experience is that people can see the list of add-ons before they install them. I waited patiently assuming all this would be fixed with a new Fedora release, but its not. I assume there is some tool that runs periodically and gathers all the metadata so that it shows up for **uninstalled** applications. Does that not run often enough? Is there some other validation process other than `appstream-util`?
More info: 1. Seems the aggregator is/was called "appstream-builder". 2. Maybe I should've filed under "appstream-data"? 3. Gimp has various addons listed in Software without me first installing them, so its certainly *possible* to have the UX I describe above.
Hmmm, so I see there may be many more rules other than passing "appstream-glib validate": https://github.com/hughsie/appstream-glib#guidelines-for-applications In particular: > AppData files MUST be installed into /usr/share/appdata Well, the Fedora spec file does that for me... is that not sufficient?
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