a821 [1] filed a deletion request for deimos [2]: Orphan, no votes, no comments, depends on python2. It seems like that the project is basically dead (last commit in 2019) given this message in their homepage [0]: NOTE: Mesos 0.20.0 shipped with built-in Docker support and this project is no longer actively maintained. [0] https://github.com/mesosphere-backup/deimos [1] https://aur.archlinux.org/account/a821/ [2] https://aur.archlinux.org/pkgbase/deimos/