MarsSeed [1] filed a deletion request for jack-stub [2]: Please remove this dummy package. It is dysfunctional and breaks software that depend on jack/jack2. It creates a stub .so ELF library that exports some jack symbols for empty functions. It's been created in 2018 to stub out jack1, and never kept up-to-date. Arch only has jack2 now but this package is harmful for that as well. So it serves no useful purpose, there's no two ways about it. :) [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/jack-stub/