Thanks Ian. There's a whole lot of information at that site!
?
It led me to this:
?
?
?
It says this:
One can distribute flatpaks along with their dependencies on USB drives (or network shares, etc.) which is especially helpful in situations where Internet access is limited or non-existent.
I'm not sure that's as easy as it sounds ... but if it is, then why not just offer the KiCad flatpaks directly rather than forcing people to use flathub?
?
For now I've given up. Instead, I've fired up my old Windows computer (something I hate to do) and the Windows version of KiCad is working fine.
?
Thanks again for your time.