Installation problems (with solutions)

1. Some OS dependencies were missing on my debian image for my unusual single board computer: apt-get install gettext-base zlib1g-dev libffi-dev libssl-dev
2. Python dependency problem. uvicorn doesn't have a version in requirements.txt. Changing to uvicorn==0.8.6 in requirements.txt fixes the problem, because it depends on "websockets==7.*". websockets 7.0 is the latest version that supports python 3.5, which according to the documentation should work. uvicorn 9.0 requires websockets 8.0 which requires python >=3.6. All python dependencies should be version contrained. I've had good experience with pip-tools.

Also, not a problem or solution, would you be interested in a patch for importing from the frontend rather than the CLI? Is there a ticket?