sphinx conf.py had an extra autodoc_mock_import setting that cleared out the import mocks

Author: sommersoft

docs/conf.py

@@ -23,9 +23,6 @@
 intersphinx_mapping = {'python': ('https://docs.python.org/3.4', None),
                        'CircuitPython': ('https://circuitpython.readthedocs.io/en/latest/', None)}
 
-# Libraries we depend on but don't need for generating docs.
-autodoc_mock_imports = []
-
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']