Repository icons not installed

[mcrha]

Since PackageKit switched to appstream (from libappstream-glib), the repository-provided icons are not installed with as_utils_install_metadata_file() any more, claiming:

• for appstream-icons.tar.gz - Unable to find valid icon size in icon tarball name.
• for appstream-icons.tar - Can not process files of this type. (this comes for example from the RPMFusion)

This leads to the appstream data without proper icons being installed, showing the provided packages in the GUI apps with a fallback icon.

Could you provide some "backward" compatibility, please?

Otherwise the repository providers need to generate the appstream icons in different ways, depending which version (of PackageKit or other appstream repo data consumer) they target, which, in fact, they do not have under their control that much. It means to have different icon files generated in different ways for them, thus currently doubled work.

I mean, do not add more work to the repo providers, please.