Homekit broken on ipython 2.7 due to asyncio

[GiantMolecularCloud]

The homekit compatibility is missing a dependency on asyncio:

co2meter_server_homekit -H 192.168.200.100 -P 8000 -N co2
Traceback (most recent call last):
  File "/usr/local/bin/co2meter_server_homekit", line 11, in <module>
    sys.exit(start_server_homekit())
  File "/usr/local/lib/python2.7/dist-packages/co2meter/co2meter.py", line 433, in start_server_homekit
    start()
  File "/usr/local/lib/python2.7/dist-packages/co2meter/server.py", line 342, in start_server_homekit
    from homekit import PORT
  File "/usr/local/lib/python2.7/dist-packages/co2meter/homekit.py", line 9, in <module>
    from pyhap.accessory_driver import AccessoryDriver
  File "/home/pi/.local/lib/python2.7/site-packages/pyhap/accessory_driver.py", line 24, in <module>
    import asyncio
ImportError: No module named asyncio

However, manually installing asyncio (sudo pip install asyncio) on a RPI3B+ also does not work:

co2meter_server_homekit -H 192.168.200.100 -P 8000 -N co2
Traceback (most recent call last):
  File "/usr/local/bin/co2meter_server_homekit", line 11, in <module>
    sys.exit(start_server_homekit())
  File "/usr/local/lib/python2.7/dist-packages/co2meter/co2meter.py", line 433, in start_server_homekit
    start()
  File "/usr/local/lib/python2.7/dist-packages/co2meter/server.py", line 342, in start_server_homekit
    from homekit import PORT
  File "/usr/local/lib/python2.7/dist-packages/co2meter/homekit.py", line 9, in <module>
    from pyhap.accessory_driver import AccessoryDriver
  File "/home/pi/.local/lib/python2.7/site-packages/pyhap/accessory_driver.py", line 24, in <module>
    import asyncio
  File "/usr/local/lib/python2.7/dist-packages/asyncio/__init__.py", line 9, in <module>
    from . import selectors
  File "/usr/local/lib/python2.7/dist-packages/asyncio/selectors.py", line 39
    "{!r}".format(fileobj)) from None
                               ^
SyntaxError: invalid syntax

There is probably no fix to this bug as the asyncio port on 2.7 is not maintained anymore: trollius project on github
Also, the trollius port is not a complete replacement and asyncio is Python 3.4+ only. So co2meter_homekit requires python3 to run.

[GiantMolecularCloud]

After installing co2meter into python3.5 I get these errors instead:

> co2meter_homekit
Traceback (most recent call last):
  File "/usr/local/bin/co2meter_homekit", line 11, in <module>
    sys.exit(start_homekit())
  File "/usr/local/lib/python3.5/dist-packages/co2meter/co2meter.py", line 422, in start_homekit
    from .homekit import start_homekit as start
  File "/usr/local/lib/python3.5/dist-packages/co2meter/homekit.py", line 10, in <module>
    from pyhap.accessory import Accessory, Category
ImportError: cannot import name 'Category'

and

> co2meter_server_homekit
Traceback (most recent call last):
  File "/usr/local/lib/python3.5/dist-packages/co2meter/server.py", line 339, in start_server_homekit
    from .homekit import PORT
  File "/usr/local/lib/python3.5/dist-packages/co2meter/homekit.py", line 10, in <module>
    from pyhap.accessory import Accessory, Category
ImportError: cannot import name 'Category'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/bin/co2meter_server_homekit", line 11, in <module>
    sys.exit(start_server_homekit())
  File "/usr/local/lib/python3.5/dist-packages/co2meter/co2meter.py", line 433, in start_server_homekit
    start()
  File "/usr/local/lib/python3.5/dist-packages/co2meter/server.py", line 342, in start_server_homekit
    from homekit import PORT
ImportError: No module named 'homekit'

[vfilimonov]

To be honest I have not tested it under Python 2.7. It very well could be that some libraries might not be compatible :-( And under Python 3 I don't remember any issues with installation of homekit..
Just checked history - it does not look like I needed much beyond pip install HAP-python

Just in case my setup is:

• Raspbian Stretch 9 (Linux raspberrypi 4.9.59-v7+)
• Python 3.5
• HAP-python (1.1.5)
• hidapi (0.7.99.post21)
• Cython (0.27.3)
• Flask (0.12.2)
• pandas (0.22.0)

[GiantMolecularCloud]

Thanks for your help!
This might be related to related to newer versions of some modules. An installation on Raspbian Stretch 9 (4.14.52-v7+) for python 3.5 this week (23 June 2018) gets these versions:

• HAP-python (2.2.2)
• hidapi (0.7.99post21)
• cython (0.28.4)
• flask (1.0.2)
• pandas (0.23.3)
  Once I have the time, I will try to find a solution.

[GiantMolecularCloud]

Success! Homekit works with HAP-python 1.1.5 instead of 2.2.2
Could you please add that co2meter requires version 1.1.5 of HAP-python?

[vfilimonov]

Great, I'm glad that it worked and thank you for the figuring it out, @GiantMolecularCloud !
I have added the version to the Readme.md