The setup instructions using pip don't work in Ubuntu 23.04

[slikts]

Following the instructions results in:

$ pip install powerline-shell
error: externally-managed-environment

There's a number of workarounds, and the cleanest one seems to be to use pipx, so maybe the docs should mention that.

[brianpeiris]

Same on Ubuntu 24.04. pipx didn't work for me. I used:

pip install powerline_shell --break-system-packages