Huawei Matebook X Pro Fails silently

In contrast to https://github.com/hadess/iio-sensor-proxy/pull/234 running iio-sensor-proxy fails silently for me, although the fact that other matebook users have it working apparently (like in the aforementioned PR) leads me to believe that I'm doing something wrong. I'm running iio-sensor-proxy from the AUR git package on an updated Arch Linux.

$ sudo G_MESSAGES_DEBUG=all /usr/sbin/iio-sensor-proxysudo G_MESSAGES_DEBUG=all /usr/sbin/iio-sensor-proxy
sudo G_MESSAGES_DEBUG=all /usr/sbin/iio-sensor-proxy
** (process:11603): DEBUG: 12:12:28.309: Could not find any supported sensors

$ iio-sensor-proxy # no output
$ monitor-sensor &
Waiting for iio-sensor-proxy to appear
$ sudo iio-sensor-proxy # running as regular user achieves nothing
**
ERROR:monitor-sensor.c:165:appeared_cb: assertion failed (error == NULL): GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name :1.10616 was not provided by any .service files (g-dbus-error-quark, 2)
fish: “monitor-sensor &” terminated by signal SIGABRT (Abort)

$ udevadm info --export-db | grep --context=1 iio
P: /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:19/PNP0C09:00/ACPI0008:00/iio:device0
N: iio:device0
E: DEVNAME=/dev/iio:device0
E: DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:19/PNP0C09:00/ACPI0008:00/iio:device0
E: DEVTYPE=iio_device
E: MAJOR=242
E: MINOR=0
E: SUBSYSTEM=iio