@tlaurion @mkukri Anyway, I'm not touching this until Mate does. He told me on IRC earlier that he'll do the upstreaming when he gets round to it - we're not going to rush it just for Heads.
I did ask Mate to prioritise upstreaming though - and that's what he told me.
Yes, your point is well taken, Re build artiffacts. Libreboot's lbmk design is the opposite, as you correctly identify: it builds clean, per board.
This is slower and lbmk uses more disk space, but I priorite clean code in lbmk.