Re: [PATCH v3] Run PipeWire and WirePlumber in the VMs

[Demi Marie Obenour <demiobenour@gmail.com>]

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On 7/14/25 10:54, Alyssa Ross wrote:
> Demi Marie Obenour <demiobenour@gmail.com> writes:
> 
>> WirePlumber is completely overkill as a session manager here, and
>> ideally a trivial session manager would be used instead.  I did build a
>> Spectrum OS image and found that PipeWire and WirePlumber both
>> successfully started.  PipeWire is configured to listen on the
>> PulseAudio socket, so PulseAudio compatibility works.  This does inject
>> a large number of completely unnecessary files into the VM, notably for
>> libcamera and Bluetooth support.
> 
> Yeah, I saw this in the log:
> 
> N 14:27:54.810067 wp-internal-comp-l ../lib/wp/private/internal-comp-loader.c:588:on_component_loaded: <WpCore:0x28d95d30> optional component 'support.logind [module: libwireplumber-module-logind]' failed to load: failed to start systemd logind monitor: -2 (No such file or directory)
> N 14:27:54.811299 wp-internal-comp-l ../lib/wp/private/internal-comp-loader.c:640:wp_component_array_load_task_execute_step: <WpCore:0x28d95d30> skipping component 'monitor.bluez.seat-monitoring [virtual]' because some of its dependencies were not loaded
> E 14:27:54.851210           spa.dbus ../spa/plugins/support/dbus.c:333:impl_connection_get: Failed to connect to system bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
> E 14:27:54.852143         spa.bluez5 ../spa/plugins/bluez5/bluez5-dbus.c:6632:impl_init: failed to get dbus connection
> N 14:27:54.855904          wp-device ../lib/wp/device.c:710:wp_spa_device_new_from_spa_factory: SPA handle 'api.bluez5.enum.dbus' could not be loaded; is it installed?
> N 14:27:54.856657         s-monitors bluez.lua:411:createMonitor: PipeWire's BlueZ SPA plugin is missing or broken. Bluetooth devices will not be supported.
> E 14:27:54.859091    spa.bluez5.midi ../spa/plugins/bluez5/midi-enum.c:805:impl_init: Creating GDBus connection failed: Could not connect: No such file or directory
> N 14:27:54.859810          wp-device ../lib/wp/device.c:710:wp_spa_device_new_from_spa_factory: SPA handle 'api.bluez5.midi.enum' could not be loaded; is it installed?
> N 14:27:54.860524         s-monitors bluez-midi.lua:95:createMonitor: PipeWire's BlueZ MIDI SPA missing or broken. Bluetooth not supported.
> E 14:27:54.861346 spa.bluez5.midi.no ../spa/plugins/bluez5/midi-node.c:1989:impl_init: failed to get dbus connection: Could not connect: No such file or directory
> E 14:27:54.862435        pw.resource ../src/pipewire/resource.c:255:pw_resource_errorf_id: can't create node: Input/output error
> W 14:27:54.863275            wp-node ../lib/wp/node.c:913:wp_impl_node_new_from_pw_factory: failed to create node from factory 'spa-node-factory'
> N 14:27:54.863965         s-monitors bluez-midi.lua:130:createServers: Failed to create BLE MIDI server.
> [0:00:01.314658075] [123]  INFO IPAManager ipa_manager.cpp:137 libcamera is not installed. Adding '/nix/store/src/ipa' to the IPA search path
> [0:00:01.321611889] [123]  INFO Camera camera_manager.cpp:326 libcamera v0.5.0
> 
> Can we set something in a config file or something to disable this extra
> stuff?
I'm working on it, but I ran into a problem: I can't install vim in the guest!
Adding it to the list of packages doesn't work; I still don't have a Vim binary
in the guest.  Without that, I have to rebuild the VM every time I want to make
a change, which makes it very hard to iterate while I figure out how to make
PipeWire talk to an emulated virtio-sound device QEMU provides.
-- 
Sincerely,
Demi Marie Obenour (she/her/hers)

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