Last month Mark installed Nginx on Hydra, with proper caching of narinfos. After some debugging, wip-http-pipelining is now in a good shape: it has performance comparable to what we currently have, *and* it’s single-threaded and shows a progress report while downloading substitute info (aka. narinfo.)
I would very much welcome further testing. To do that, you need to run the daemon like this (you need both the daemon and ‘guix substitute-binary’ from this branch): sudo ./pre-inst-env guix-daemon --build-users-group=whatever ... Then just use the guix commands with substitutes enabled. To force an update, you can clear the local cache with a command like: sudo rm -rf /var/guix/substitute-binary/cache/ See <http://lists.gnu.org/archive/html/guix-devel/2014-06/msg00069.html> for some background. Thanks, Ludo’.
