{ config, pkgs, lib, ... }: { services.hydra = { enable = true; hydraURL = "localhost:3000"; buildMachinesFiles = [ "/etc/nix/machines" ]; notificationSender = "hydra@localhost"; useSubstitutes = true; }; nix.buildMachines = [ { hostName = "localhost"; protocol = null; # system = "x86_64-linux"; systems = [ "x86_64-linux" "aarch64-linux" ]; supportedFeatures = ["kvm" "nixos-test" "big-parallel" "benchmark"]; maxJobs = 8; } ]; }