Research 027 asked for cups with the printer's driver. Measured: both
Brother queues already print through IPP Everywhere, so cups and
cups-filters are the whole driver, and the AUR vendor packages beside them
serve no queue. The desktop's Canon is the exception: its 2012 driver is
AUR-only and waits for the mesh's package repository; it stays as found.
Seven Go tools: printers (state, device, driverless or not, supply levels),
queue, cancel (the account first, sudo -n when CUPS refuses it), print,
default, resume, and drivers (which packages bring drivers, which are
foreign, which no queue uses).
