cros-sommelier/sommelier@.service

[Unit]
Description=Master sommelier listening on socket wayland-%i

[Service]
Environment="WAYLAND_DISPLAY_VAR=WAYLAND_DISPLAY"
Environment="SOMMELIER_SCALE=1.0"
Type=notify
ExecStart=/usr/bin/sommelier \
              --master \
              --sd-notify="READY=1" \
              --socket=wayland-%i \
              /bin/sh -c \
                  "systemctl --user set-environment ${WAYLAND_DISPLAY_VAR}=$${WAYLAND_DISPLAY}; \
                   systemctl --user import-environment SOMMELIER_VERSION"
Restart=always

[Install]
WantedBy=default.target
DefaultInstance=0