dseg [1] filed a deletion request for rabbitmq-web-stomp [2]: This package is redundant because the RabbitMQ package (of community) includes this. % pacman -Ql rabbitmq|grep web_stomp rabbitmq /usr/lib/rabbitmq/lib/rabbitmq- server-3.6.6/plugins/rabbitmq_web_stomp-3.6.6.ez rabbitmq /usr/lib/rabbitmq/lib/rabbitmq- server-3.6.6/plugins/rabbitmq_web_stomp_examples-3.6.6.ez [1] https://aur.archlinux.org/account/dseg/ [2] https://aur.archlinux.org/pkgbase/rabbitmq-web-stomp/