MarsSeed [1] filed a deletion request for websocketpp-git [2]: Useless to keep this abandoned package. As upstream's master branch always contains the same release version as what Arch/extra/websocketpp gets built from. Has only 2 votes, and last comment apart from mine is from 4 years ago. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/websocketpp-git/