Dependencies:
Tested on Python 3.11.8, but the most advanced feature used is probably match.
pcapng (only for scan-usb-hid.py)
pyudev
ioctl-opt

Using it:

USAGE: ./8kbdctl.py [test|force|verbose]... <<command> [args]>...

test - Just go through the motions but do everything except actually updating
       the device.  The device will still be accessed to get the profile.
force - Don't get the profile from the device, making all changes happen
        even if they would be redundant.
verbose - Get a lot of extra information about what's happening.

Command may be:
list-in-codes - List possible codes which relate to keys on the keyboard and
    their names.
list-out-codes - List possible codes which a key may be assigned to and their
    names.
get-profile - Get the profile from the device.
set-name <name> - Set the profile name, as a quirk of the device, setting
    the name to an empty string ("") will disable the profile button.
set-key [<mod-key>+]<in-key> <out-key> - Set a mapping from in-key to
    out-key, with optional mod-key to be pressed at the same time.
set-macro <in-key> <name> <repeats> [events] - Set a macro to <in-key>.
    <repeats> may be 0 to disable a macro, name and any events will be
    accepted, but ignored, except end.
    For each event: up|down <out-key/mod-key> <delay in milliseconds>
                    - or -
                    end
down - Indicate a key press.
up - Indicate a key release.
end - Indicate the end of a macro, this is optional but necessary if
      additional commands are to follow.
set-all-default - Restore all keys to defaults.