I've built ABS (archlinux) packages by having some swap space on my pogoplug mobile's boot drive (1TB USB). It's a slog, but stuff will finish sooner or later,

I've built ABS (archlinux) packages by having some swap space on my pogoplug mobile's boot drive (1TB USB). It's a slog, but stuff will finish sooner or later, and by that I mean later or really late. Now that I'm thinking about it, I'd like to see if going from the RPI's USB3->SATA adapter->M.2 adapter->16GB of Optane ($40+tax locally) would work, and if it did work (a big if), what performance is like. Edit - Scratch that, I just remembered the Pi 3 is still USB 2.