On Wed, 09 Dec 2020 at 11:55, Pierre Neidhardt <m...@ambrevar.xyz> wrote: > `guix environment` incurs an overhead: > > --8<---------------cut here---------------start------------->8--- > time /gnu/store/a462kby1q51ndvxdv3b6p0rsixxrgx1h-hello-2.10/bin/hello > Hello, world! > > real 0m0.002s > user 0m0.002s > sys 0m0.000s > --8<---------------cut here---------------end--------------->8--- > > --8<---------------cut here---------------start------------->8--- > $ time guix environment --ad-hoc hello -- hello > Hello, world! > > real 0m0.921s > user 0m1.003s > sys 0m0.091s > --8<---------------cut here---------------end--------------->8--- > > It's possible to bypass this overhead by using --root:
It by-passes the computations of derivations and profiles. Somehow, using --root is using a precomputed profile. IIUC. > So is it possible to use a similar trick to run something containerized > "instantly", i.e. with less than, say, 100ms overhead? I see, you would like to be able to run a profile in container, right? Somehow, it is similar to the wanted [1], IIUC. 1: <https://yhetil.org/guix-devel/877dvn10ro....@dustycloud.org> Cheers, simon
