pipewire/src/daemon/systemd/system/pipewire.service.in

[Unit]
Description=PipeWire Multimedia Service

# We require pipewire.socket to be active before starting the daemon, because
# while it is possible to use the service without the socket, it is not clear
# why it would be desirable.
#
# Installing pipewire and doing `systemctl start pipewire` will not get the
# socket started, which might be confusing and problematic if the server is to
# be restarted later on, as the client autospawn feature might kick in. Also, a
# start of the socket unit will fail, adding to the confusion.
#
# After=pipewire.socket is not needed, as it is already implicit in the
# socket-service relationship, see systemd.socket(5).
Requires=pipewire.socket

[Service]
LockPersonality=yes
MemoryDenyWriteExecute=yes
NoNewPrivileges=yes
SystemCallArchitectures=native
SystemCallFilter=@system-service
Type=simple
AmbientCapabilities=CAP_SYS_NICE
ExecStart=@PW_BINARY@
Restart=on-failure
RuntimeDirectory=pipewire
RuntimeDirectoryPreserve=yes
User=pipewire
Environment=PIPEWIRE_RUNTIME_DIR=%t/pipewire

[Install]
Also=pipewire.socket pipewire-manager.socket
WantedBy=default.target