I have a package on Arch Linux with valid desktop and appdata files, but the package is completely missing from the output of appstream-generator: vokoscreen

It doesn't even mention that could be interesting or no interesting files found. No hints or anything else, so I have no idea what actually happens. I didn't experience something like this with other packages.

Also, it would be great so see a way to test individual packages for compliance with apptream-generator without processing the whole repository.