Hi, > Yes, you’re right of course. But I think in the example above Lars was > reporting the run time of the ‘guix’ command when the graft itself is > already built. Just the extra code to compute the graft derivation (not > actually building them) leads to x2 wall-clock time or so. yes, Ludo is right. The numbers I reported are with grafts already built, warm caches and local socket communication. So we’re only seeing the CPU-bound computation here. Sorry for the confusion. I should have been more specific in the other issue. Cheers, Lars