I get this error when I try to add BLE device tracker support to my config file.
2017-07-26 23:13:09 ERROR (SyncWorker_7) [homeassistant.util.package] Unable to install package gattlib==0.20150805: Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-rolxqr9d/gattlib/
2017-07-26 23:13:09 ERROR (MainThread) [homeassistant.setup] Not initializing device_tracker.bluetooth_le_tracker because could not install dependency gattlib==0.20150805
2017-07-26 23:13:09 ERROR (MainThread) [homeassistant.setup] Unable to prepare setup for platform device_tracker.bluetooth_le_tracker: Could not install all requirements.
Also I’m not able to use my MiFlora with hass.io, but it works just fine with Raspbian.