rasa-demo Errors doing `make install`

I'm trying to setup rasa-demo on python 3.7.13 in a pyenv-virtualenv on macOS Big Sur non-M1. If I just do make install, it will be a very slow install process about 30min, ending with a sklearn error ERROR: Command errored out with exit status 1:. If i edit Makefile to use python -m pip install --upgrade "pip==22.0.4" instead of "pip<20", it will be way faster, but end up with

INFO: pip is looking at multiple versions of <Python from Requires-Python> to determine which version is compatible with other requirements. This could take a while.
INFO: pip is looking at multiple versions of rasa to determine which version is compatible with other requirements. This could take a while.
ERROR: Cannot install -r actions/requirements-actions.txt (line 5) and rasa because these package versions have conflicting dependencies.

The conflict is caused by:
    requests 2.24.0 depends on urllib3!=1.25.0, !=1.25.1, <1.26 and >=1.21.1
    rasa-sdk 2.8.5 depends on urllib3<2.0.0 and >=1.26.5
    requests 2.24.0 depends on urllib3!=1.25.0, !=1.25.1, <1.26 and >=1.21.1
    rasa-sdk 2.8.4 depends on urllib3<2.0.0 and >=1.26.5
    requests 2.24.0 depends on urllib3!=1.25.0, !=1.25.1, <1.26 and >=1.21.1
    rasa-sdk 2.8.3 depends on urllib3<2.0.0 and >=1.26.5
    requests 2.24.0 depends on urllib3!=1.25.0, !=1.25.1, <1.26 and >=1.21.1
    rasa-sdk 2.8.2 depends on urllib3<2.0.0 and >=1.26.5
    requests 2.24.0 depends on urllib3!=1.25.0, !=1.25.1, <1.26 and >=1.21.1
    rasa-sdk 2.8.1 depends on urllib3<2.0.0 and >=1.26.5

To fix this you could try to:
1. loosen the range of package versions you've specified
2. remove package versions to allow pip attempt to solve the dependency conflict

ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/topics/dependency-resolution/#dealing-with-dependency-conflicts
make: *** [install] Error 1

Finally, if i edit make to use python -m pip install --upgrade "pip==20.2" it installs without error. Checking to see whether the aforemention conflicts were resolved, i'm surprised to see from pip list

rasa-sdk 2.8.5
requests 2.24.0
urllib3 1.25.11 which still breaks the rule rasa-sdk 2.8.5 depends on urllib3<2.0.0 and >=1.26.5 , so why did pip 22.0.4 error out while pip 20.2 have no issues?

More importantly, how do we know which Rasa projects have been tested on what OS/environments?