Error installing flask-sqlalchemy "Could not build wheels for greenlet..."

Question

New to Flask, trying to install Flask-SQLAlchemy "pip install flask Flask-SQLAlchemy". Getting error building wheel for greenlet:

error: subprocess-exited-with-error

  × python setup.py bdist_wheel did not run successfully.
  │ exit code: 1

I tried installing greenlet via pip but that fails with the same error. This is in Windows 10 and VSCode. Any help is greatly appreciated.