@jlward73 I ran into this same problem.

Workaround I used was to run the preinstall script manually in the MMM-KeyBindings directory. The preinstall script successfully installed the required libudev-dev package. Afterwards, the npm install ran without problems (other than the warnings about deprecated modules you mention).

Also worth noting, that the install steps say “If you are not planning to use this module with anything but a standard keyboard. STOP HERE.”, but you still need to run the npm install step if you’re using just the standard keyboard.