joposter [1] filed a deletion request for mopidy-youtube [2]: mopidy-youtube as of now does not provide a stable release for python3. Since the official repos no longer contain python2-pykka, this package is broken. Therefore mopidy-youtube-git is the only valid paket (for now) . [1] https://aur.archlinux.org/account/joposter/ [2] https://aur.archlinux.org/pkgbase/mopidy-youtube/