l...@gnu.org (Ludovic Courtès) skribis: > No, but it’s true that it’s surprisingly slow to start: > > $ time ./pre-inst-env guix-package > > real 0m1.084s > user 0m0.904s > sys 0m0.058s
This is actually the time it takes to connect to the daemon, and to compute the derivation of Guile (which is then used to build the profile, if a profile gets built.) Queries (-I and -A) don’t need this, so I just rearranged the code accordingly. Both now take less than .2s on my laptop. In the roll-back case, neither is necessary, except when rolling back to generation 0 for the first time. All other actions need it. So I just kept it for all the actions, including roll-back. Thanks, Ludo’.
