Thanks for the replies.

Well...

After some research.   (And still as yet unable to locate "The Pipx people".)

(The most informative site I found is at:- https://pipx.pypa.io/stable/troubleshooting/ But I've not yet found a way to locate, let alone to reach out to the Pipx crew.)

Anyway, after reading through that page, and also several other similar sites.

I uninstalled/purged the antique distro version of Chirp.

Then removed/purged python3-venv and python3-pip

That also removed pipx.

System restart, no issues.

I then :- sudo apt install python3-venv python3-pip    Completed with no error.

Pipx still didn't exist, so...

sudo apt install pipx   Also completed with no errors.

pipx list now returns

:*~*$ pipx list nothing has been installed with pipx 😴

System restart again, no issues.

Then retried... $ pipx install --system-site-packages ./Downloads/chirp-20240827-py3-none-any.whl

The install still fails in the same way as before.

:-(

Looking at the structure of the .whl file, it "seems" to be a simple compressed archive of a folder structure that contains the application.

So, how to install that manually, and invoke it correctly?

Or, how to install from sources?

Otherwise, I'm stumped.

73.

Dave G0WBX.