The PipeWire developers recommend to use Catia for PipeWire (and JACK) for use-cases that the loopback module serves for PulseAudio: https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/543#note_845943 Their alternative recommendation is Carla, which is also not packaged for Gentoo: https://bugs.gentoo.org/561582 DESCRIPTION="Simple JACK Patchbay" HOMEPAGE="https://kx.studio/Applications:Catia" LICENSE="GPL-2.0" Source: https://github.com/falkTX/Cadence Code is Python and C++ with dependencies on Qt.
The build system uses custom Makefiles. Luckily there is not too much code (Catia seems to have a rather narrow focus), so hopefully it is not too much trouble to build.
Catia is packaged as part of media-sound/cadence already
(In reply to Emily Rowlands from comment #2) > Catia is packaged as part of media-sound/cadence already Thanks! I submitted bug #777408 and bug #777411 in the hopes that solving both will satisfy my use-case (comment #0).