lonaowna [1] filed a deletion request for coap-client [2]: This package is obsolete: use libcoap or libcoap-git both contain the coap-client executable. coap-client cannot be installed without libcoap. [1] https://aur.archlinux.org/account/lonaowna/ [2] https://aur.archlinux.org/pkgbase/coap-client/