Difficulty working inside virtualenv

[peter-lucia]

Just an FYI, I had difficulty setting this up in a virtualenv until I installed the following packages:

dbus-python==1.2.16
gatt==0.2.7
pkg-resources==0.0.0
ruamel.yaml==0.16.10
ruamel.yaml.clib==0.2.0
vext==0.7.3
vext.gi==0.7.0

After installing these packages, as well as reinstalling bluetoothd with the instructions provided in the README so that bluetoothd --version is5.44, gattctl --discover worked as expected.
I'm not sure whether the bluetoothd version matters, as I was previously on 5.48