./node_modules/.bin/electron-builder --arm --linux deb
And it failed with the message:
Unknown argument: arm
It also dumped all the permitted commands, as if I had specified “–help”, and there are clearly only two arm-related choices, which are:
--armv7l Build for armv7l [boolean] --arm64 Build for arm64 [boolean]
So, I’m going to try armv7l, just to see what happens.