00-verify-setup fails with pip 21.3.1 or newer

[Atihinen]

Workaround was to run command pip3 install pip==21.2.4 jazzband/pip-tools#1503 (comment)

[asimell]

This could and should be documented in 00_getting_started.md. Based on feedback on the training session on 8.2. installation and verification took too long, since the instructions were a bit unclear. The feedback suggested some What if... FAQ style troubleshooting when people have trouble with the installation.

[Atihinen]

The FAQ in 00 would really make sense since there are known things to happen.

[Tattoo]

In setup/verify_env.py, we do the following:

from pip._internal.utils.misc import get_installed_distributions

This relies, as the line implies, on internals of pip which probably have changed.

Rather, we should probably do something like:

try:
   import robotframework
except ImportError:
   print('"robotframework" is not correctly installed!')