AlfredoRamos [1] filed a deletion request for msgpack-c-0.5 [2]: It's no longer needed. It was required only for freeminer [1] but now it works with msgpack 1.1.0 [1]: https://aur.archlinux.org/packages/freeminer/ [1] https://aur.archlinux.org/account/AlfredoRamos/ [2] https://aur.archlinux.org/pkgbase/msgpack-c-0.5/