allow custom driver factories

bumble/drivers/__init__.py

@@ -61,7 +61,7 @@ async def get_driver_for_host(host):
     """Probe all known diver classes until one returns a valid instance for a host,
     or none is found.
     """
-    if (driver := await rtk.Driver.for_host(host)):
+    if driver := await rtk.Driver.for_host(host):
         logger.debug("Instantiated RTK driver")
         return driver
 

bumble/drivers/rtk.py

@@ -256,7 +256,7 @@ class Firmware:
                     chip_id,
                     firmware[patch_offset : patch_offset + patch_length - 4]
                     + struct.pack("<I", self.version),
-                    svn_version
+                    svn_version,
                 )
             )