Install seems to fail on mac os with python 3.7

[ewjoachim]

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For some reason, Poetry seems unable to install packages when they don't have a wheel for our system. This happens on macOS (because wheels are scoped for specific macOS versions) with 3.7 (which is old enough), and apparently, poetry was unable to fallback to the sdist. I guess it doesn't happen on the CI because CI runs on ubuntu.

My workaround was:

export LDFLAGS='-L/usr/local/lib -L/usr/local/opt/openssl/lib -L/usr/local/opt/readline/lib'
pip install 'sqlalchemy[mypy]==1.4.27' coverage==6.2 greenlet==1.1.2 markupsafe==2.0.1 psycopg2-binary==2.9.2 regex==2021.11.10 typed-ast==1.4.3