My google-fu has failed me.
Any ideas why this is failing?
From the Check Home Assistant configuration Plugin:
warning: no previously-included files matching '*.pyc' found anywhere in distribution
warning: no previously-included files found matching 'multidict/_multidict.html'
warning: no previously-included files found matching 'multidict/*.so'
warning: no previously-included files found matching 'multidict/*.pyd'
warning: no previously-included files found matching 'multidict/*.pyd'
no previously-included directories found matching 'docs/_build'
writing manifest file 'multidict.egg-info/SOURCES.txt'
copying multidict/__init__.pyi -> build/lib.linux-armv7l-3.7/multidict
copying multidict/_multidict.c -> build/lib.linux-armv7l-3.7/multidict
copying multidict/py.typed -> build/lib.linux-armv7l-3.7/multidict
creating build/lib.linux-armv7l-3.7/multidict/_multilib
copying multidict/_multilib/defs.h -> build/lib.linux-armv7l-3.7/multidict/_multilib
copying multidict/_multilib/dict.h -> build/lib.linux-armv7l-3.7/multidict/_multilib
copying multidict/_multilib/istr.h -> build/lib.linux-armv7l-3.7/multidict/_multilib
copying multidict/_multilib/iter.h -> build/lib.linux-armv7l-3.7/multidict/_multilib
copying multidict/_multilib/pair_list.h -> build/lib.linux-armv7l-3.7/multidict/_multilib
copying multidict/_multilib/views.h -> build/lib.linux-armv7l-3.7/multidict/_multilib
running build_ext
building 'multidict._multidict' extension
creating build/temp.linux-armv7l-3.7
creating build/temp.linux-armv7l-3.7/multidict
gcc -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -DTHREAD_STACK_SIZE=0x100000 -fPIC -I/usr/local/include/python3.7m -c multidict/_multidict.c -o build/temp.linux-armv7l-3.7/multidict/_multidict.o -O2 -std=c99 -Wall -Wsign-compare -Wconversion -fno-strict-aliasing -pedantic
error: command 'gcc' failed with exit status 1
----------------------------------------
ERROR: Failed building wheel for multidict
ERROR: Could not build wheels for multidict which use PEP 517 and cannot be installed directly
WARNING: You are using pip version 19.2.2, however version 19.3.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
[11:23:46] ERROR: An error occurred while installing Home Assistant:
Looking in links: https://wheels.home-assistant.io/alpine-3.10/armv7/
Collecting homeassistant
Downloading https://files.pythonhosted.org/packages/87/c9/f41fcf931501f07ef9ca12365fd09eb879f6755618f375b058a229d9c94b/homeassistant-0.103.6-py3-none-any.whl (6.0MB)
Collecting async-timeout==3.0.1 (from homeassistant)
Downloading https://files.pythonhosted.org/packages/e1/1e/5a4441be21b0726c4464f3f23c8b19628372f606755a9d2e46c187e65ec4/async_timeout-3.0.1-py3-none-any.whl
Collecting bcrypt==3.1.7 (from homeassistant)
Downloading https://wheels.home-assistant.io/alpine-3.10/armv7/bcrypt-3.1.7-cp37-none-any.whl (57kB)
Collecting pytz>=2019.03 (from homeassistant)
Downloading https://files.pythonhosted.org/packages/e7/f9/f0b53f88060247251bf481fa6ea62cd0d25bf1b11a87888e53ce5b7c8ad2/pytz-2019.3-py2.py3-none-any.whl (509kB)
Collecting voluptuous==0.11.7 (from homeassistant)
Downloading https://wheels.home-assistant.io/alpine-3.10/armv7/voluptuous-0.11.7-py3-none-any.whl
Collecting cryptography==2.8 (from homeassistant)
Downloading https://wheels.home-assistant.io/alpine-3.10/armv7/cryptography-2.8-cp37-none-any.whl (877kB)
Collecting importlib-metadata==0.23 (from homeassistant)
Downloading https://files.pythonhosted.org/packages/f6/d2/40b3fa882147719744e6aa50ac39cf7a22a913cbcba86a0371176c425a3b/importlib_metadata-0.23-py2.py3-none-any.whl
Collecting python-slugify==4.0.0 (from homeassistant)
Downloading https://wheels.home-assistant.io/alpine-3.10/armv7/python_slugify-4.0.0-py2.py3-none-any.whl
Collecting ruamel.yaml==0.15.100 (from homeassistant)
Downloading https://wheels.home-assistant.io/alpine-3.10/armv7/ruamel.yaml-0.15.100-cp37-none-any.whl (656kB)
Collecting jinja2>=2.10.3 (from homeassistant)
Downloading https://files.pythonhosted.org/packages/65/e0/eb35e762802015cab1ccee04e8a277b03f1d8e53da3ec3106882ec42558b/Jinja2-2.10.3-py2.py3-none-any.whl (125kB)
Collecting astral==1.10.1 (from homeassistant)
Downloading https://files.pythonhosted.org/packages/ff/5d/261f49822b7f77c265197d46cdbaaaaf06f458734e9ac55a140dd75bdf29/astral-1.10.1-py2.py3-none-any.whl
Collecting aiohttp==3.6.1 (from homeassistant)
Downloading https://wheels.home-assistant.io/alpine-3.10/armv7/aiohttp-3.6.1-cp37-none-any.whl (1.2MB)
Collecting PyJWT==1.7.1 (from homeassistant)
Downloading https://files.pythonhosted.org/packages/87/8b/6a9f14b5f781697e51259d81657e6048fd31a113229cf346880bb7545565/PyJWT-1.7.1-py2.py3-none-any.whl
Requirement already satisfied: pip>=8.0.3 in /usr/local/lib/python3.7/site-packages (from homeassistant) (19.2.2)
Collecting pyyaml==5.1.2 (from homeassistant)
Downloading https://wheels.home-assistant.io/alpine-3.10/armv7/PyYAML-5.1.2-cp37-none-any.whl (44kB)
Collecting voluptuous-serialize==2.3.0 (from homeassistant)
Downloading https://wheels.home-assistant.io/alpine-3.10/armv7/voluptuous_serialize-2.3.0-py3-none-any.whl
Collecting requests==2.22.0 (from homeassistant)
Downloading https://files.pythonhosted.org/packages/51/bd/23c926cd341ea6b7dd0b2a00aba99ae0f828be89d72b2190f27c11d4b7fb/requests-2.22.0-py2.py3-none-any.whl (57kB)
Collecting attrs==19.3.0 (from homeassistant)
Downloading https://files.pythonhosted.org/packages/a2/db/4313ab3be961f7a763066401fb77f7748373b6094076ae2bda2806988af6/attrs-19.3.0-py2.py3-none-any.whl
Collecting certifi>=2019.9.11 (from homeassistant)
Downloading https://files.pythonhosted.org/packages/b9/63/df50cac98ea0d5b006c55a399c3bf1db9da7b5a24de7890bc9cfd5dd9e99/certifi-2019.11.28-py2.py3-none-any.whl (156kB)
Collecting six>=1.4.1 (from bcrypt==3.1.7->homeassistant)
Downloading https://files.pythonhosted.org/packages/65/26/32b8464df2a97e6dd1b656ed26b2c194606c16fe163c695a992b36c11cdf/six-1.13.0-py2.py3-none-any.whl
Requirement already satisfied: cffi>=1.1 in /usr/local/lib/python3.7/site-packages (from bcrypt==3.1.7->homeassistant) (1.12.3)
Collecting zipp>=0.5 (from importlib-metadata==0.23->homeassistant)
Downloading https://files.pythonhosted.org/packages/74/3d/1ee25a26411ba0401b43c6376d2316a71addcc72ef8690b101b4ea56d76a/zipp-0.6.0-py2.py3-none-any.whl
Collecting text-unidecode>=1.3 (from python-slugify==4.0.0->homeassistant)
Downloading https://files.pythonhosted.org/packages/a6/a5/c0b6468d3824fe3fde30dbb5e1f687b291608f9473681bbf7dabbf5a87d7/text_unidecode-1.3-py2.py3-none-any.whl (78kB)
Collecting MarkupSafe>=0.23 (from jinja2>=2.10.3->homeassistant)
Downloading https://wheels.home-assistant.io/alpine-3.10/armv7/MarkupSafe-1.1.1-cp37-none-any.whl
Collecting yarl<2.0,>=1.0 (from aiohttp==3.6.1->homeassistant)
Downloading https://wheels.home-assistant.io/alpine-3.10/armv7/yarl-1.4.2-cp37-none-any.whl (255kB)
Collecting multidict<5.0,>=4.5 (from aiohttp==3.6.1->homeassistant)
Downloading https://files.pythonhosted.org/packages/b6/22/ae21cedaa0e6d35e84e8ab57700dcf3d4609421ebe113e1aaafc468eec42/multidict-4.7.4.tar.gz (50kB)
Installing build dependencies: started
Installing build dependencies: finished with status 'done'
Getting requirements to build wheel: started
Getting requirements to build wheel: finished with status 'done'
Preparing wheel metadata: started
Preparing wheel metadata: finished with status 'done'
Collecting chardet<4.0,>=2.0 (from aiohttp==3.6.1->homeassistant)
Downloading https://files.pythonhosted.org/packages/bc/a9/01ffebfb562e4274b6487b4bb1ddec7ca55ec7510b22e4c51f14098443b8/chardet-3.0.4-py2.py3-none-any.whl (133kB)
Collecting urllib3!=1.25.0,!=1.25.1,<1.26,>=1.21.1 (from requests==2.22.0->homeassistant)
Downloading https://files.pythonhosted.org/packages/b4/40/a9837291310ee1ccc242ceb6ebfd9eb21539649f193a7c8c86ba15b98539/urllib3-1.25.7-py2.py3-none-any.whl (125kB)
Collecting idna<2.9,>=2.5 (from requests==2.22.0->homeassistant)
Downloading https://files.pythonhosted.org/packages/14/2c/cd551d81dbe15200be1cf41cd03869a46fe7226e7450af7a6545bfc474c9/idna-2.8-py2.py3-none-any.whl (58kB)
Requirement already satisfied: pycparser in /usr/local/lib/python3.7/site-packages (from cffi>=1.1->bcrypt==3.1.7->homeassistant) (2.19)
Collecting more-itertools (from zipp>=0.5->importlib-metadata==0.23->homeassistant)
Downloading https://files.pythonhosted.org/packages/bc/e2/3206a70758a21f9878fcf9478282bb68fbc66a5564718f9ed724c3f2bb52/more_itertools-8.1.0-py3-none-any.whl (41kB)
Building wheels for collected packages: multidict
Building wheel for multidict (PEP 517): started
Building wheel for multidict (PEP 517): finished with status 'error'
Running setup.py clean for multidict
Failed to build multidict