Server String is file name?
I built latest (573e2afd) snapshot from source, installed it, enabled and started pipewire-pulse and pipewire sockets. Work it with audacious.
pactl info | grep -v '^[UH]'
Server String: /run/user/1002/pulse/native
Library Protocol Version: 34
Server Protocol Version: 34
Is Local: yes
Client Index: 75
Tile Size: 65472
Server Name: PulseAudio (on PipeWire 0.3.15)
Server Version: 14.0.0
Default Sample Specification: float32le 2ch 48000Hz
Default Channel Map: front-left,front-right
Default Sink: alsa_output.usb-Panasonic_Corporation_Panasonic_USB_Audio_2_1234-00.analog-stereo
Default Source: alsa_input.pci-0000:00:14.2.analog-stereo
Cookie: 72b1:852b
Server string really /run/user/1002/pulse/native? Is this OK?