Hi, I'm using Mint 18.1 and trying to parse the metadata with appstreamcli. It doesn't like the 'launchable' tag in the xml. Research suggest this is because my repo's appstream is too old (0.10.6). I cloned the appstream repo to build and

      meson.build:63:0: ERROR:  Invalid version of dependency, need 'glib-2.0' ['>=2.54'] found '2.48.2'.

The README needs to be updated with this value. I'm not going to update my system to match - I like to use an older system to build my project with. It looks like a dead-end for metadata in my appimages.