micmuteled.py

#!/usr/bin/python

import pulsectl


def default_source(pulse):
    default_source_name = pulse.server_info().default_source_name
    for source in pulse.source_list():
        if source.name == default_source_name:
            return source
    return None


def update_led(pulse):
    if source := default_source(pulse):
        with open(
            "/sys/devices/platform/thinkpad_acpi/leds/platform::micmute/brightness",
            "w",
        ) as f:
            print(source.mute, file=f)


while True:
    try:
        with pulsectl.Pulse("event-printer") as pulse:

            def stop_after_one_event(ev):
                raise pulsectl.PulseLoopStop

            pulse.event_mask_set("source")
            pulse.event_callback_set(stop_after_one_event)
            while True:
                update_led(pulse)
                pulse.event_listen(timeout=None)
    except pulsectl.PulseDisconnected as e:
        print("Reconnecting")
        continue