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fix: macOS compatibility - handle missing BlueZ import #87

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Merged
rbaron merged 1 commit into from
May 26, 2026
Merged

fix: macOS compatibility - handle missing BlueZ import #87

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9 changes: 7 additions & 2 deletions catprinter/ble.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,11 @@
from bleak import BleakClient, BleakScanner
from bleak.backends.scanner import AdvertisementData
from bleak.backends.device import BLEDevice
from bleak.backends.bluezdbus.client import BleakClientBlueZDBus
# In MacOS capture exception trying Linux library import and set a flag
try:
from bleak.backends.bluezdbus.client import BleakClientBlueZDBus
except ImportError:
BleakClientBlueZDBus = None
from catprinter import logger

# For some reason, bleak reports the 0xaf30 service on my macOS, while it reports
Expand Down Expand Up @@ -99,7 +103,8 @@ async def run_ble(data, device: Optional[str]):
async with BleakClient(address) as client:
# XXX: BlueZ incorrectly reports a fixed MTU of 23; force MTU negotiation manually.
# https://bleak.readthedocs.io/en/latest/api/client.html#bleak.BleakClient.mtu_size
if isinstance(client, BleakClientBlueZDBus):
# Only use this library on Linux, not MacOS
if BleakClientBlueZDBus and isinstance(client, BleakClientBlueZDBus):
await client._acquire_mtu()

logger.info(f"✅ Connected: {client.is_connected}; MTU: {client.mtu_size}")
Expand Down
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