{ config, ... }: { nix = { enable = true; gc.interval = if config.chvp.base.nix.slowGc then { Hour = 0; Minute = 0; } else { Minute = 0; }; optimise.interval = { Minute = 30; }; settings.sandbox = true; }; nixpkgs.flake = { setFlakeRegistry = false; setNixPath = false; }; }