There were two lines of enigma machines. IIRC the naval ones were much more difficult to crack, which is what Turing was instrumental in solving.

I think you're right!

https://en.wikipedia.org/wiki/Enigma-M4

Wind has the same problem, because the actual generator is not spinning at line frequency. It has a rectifier plus inverter.

Namespace every package, so you install "somebody/thing" instead of just "thing"