-The Micropython compatibility layers described above are intended to provide a CircuitPython-like API for devices which
-are running Micropython. Since corresponding packages should be built-in to any standard
-CircuitPython image, they have no value on a device already running CircuitPython and would likely conflict in unhappy ways.
+The emulation described above is intended to provide a
+CircuitPython-like API for devices which are running CPython or
+Micropython. Since corresponding packages should be built-in to any
+standard CircuitPython image, they have no value on a device already
+running CircuitPython and would likely conflict in unhappy ways.
+
+The test suites in the test/src folder under **testing.universal** are by design
+intended to run on *either* CircuitPython *or* CPython/Micropython+compatibility layer to prove conformance.
+
+Installing from PyPI
+=====================
+
+On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally `from
+PyPI <https://pypi.org/project/Adafruit-Blinka/>`_. To install for current user:
+
+.. code-block:: shell
+
+ pip3 install Adafruit-Blinka
+
+To install system-wide (this may be required in some cases):
+
+.. code-block:: shell
+
+ sudo pip3 install Adafruit-Blinka