error: This environment is externally managed

I've followed the instructions, and when running the `install_prereq.sh` , but once it has finished installing the `apt-get` packages, it has an error as below.

error: externally-managed-environment

× This environment is externally managed
╰─> To install Python packages system-wide, try apt install
python3-xyz, where xyz is the package you are trying to
install.

I've copied the line out of the `.sh` file, and edited it from

`sudo python3 -m pip install --user --upgrade paho-mqtt tornado git+https://github.com/drbild/sslpsk.git pycryptodomex`

to

`python3 -m pip install --break-system-packages --user --upgrade paho-mqtt tornado git+https://github.com/drbild/sslpsk.git pycryptodomex`

(i.e. removed `sudo` and added `--break-system-packages`)

This seems to install all of the Python packages correctly, but can the developers confirm that this is correct please??

Start with install_prereq.sh, especially the apt-get section and the Python pip command that installs paho-mqtt, tornado, sslpsk, and pycryptodomex. Reproduce the externally-managed-environment error on the reported setup and verify the supported installation approach; done means the prerequisite script installs these packages successfully without requiring an unconfirmed manual workaround.

Written by the indexing model from the issue text.