Module Rig_bin
Machines and addresses, written one way: a name or an address, an IPv6 address in brackets, as URIs write it: h100-b, 10.0.0.2, [fd00::2], [::1]:7000.
rig firmware: a directory filled with a driver's pinned firmware images.
The firmware images each driver-less driver boots with: its gen/headers/firmware.tsv, from which gen/gen.py also makes the driver's pins.
The lines a launched process and a machine's half write to their launcher.