from available package sets

More code, but less thinking to understand what it does.

i.e. if mpsd_release == None

It's not perfect that this needs manual updating. On the other hand, this
provides control over what versions are (trivially) visible to users.

As this is a python package, we now do rely on rich.

due to color

Remove printing of current working directory to debug message: usually the user
will know in which directory they are, so this information detracts from the
interesting content of the error message.

- as screen width may vary, it is best not to break sentences with \n I think.