Hi Ludo, > The patch below is a noticeable improvement for me. On my laptop, > > GUIX_DAEMON_SOCKET=ssh://localhost ./pre-inst-env guix build libreoffice -n > > goes from 5.8s to 3.3s. It just does the same thing as we do for > guix://. > > Could you check what results it gives you? looking pretty good, comparing master without/with patch: ---snip--- N Min Max Median Avg Stddev x 10 16.87 20.77 17.44 17.802 1.1228515 + 10 9.92 13.67 10.19 10.569 1.1254574 Difference at 99.0% confidence -7.233 +/- 1.44688 -40.6303% +/- 6.68735% ---snap--- > There’s a project to rewrite the daemon in Scheme, started by Caleb > Ristvedt (reepa) as part of GSoC a few years ago. This could be an > opportunity to add a new version of the protocol that would support > pipelining. Given how much improvement you’ve achieved so far I’d say we can (for now) probably get away with the current protocol. Still, what’s the status of this daemon? Lars