{ nix.buildMachines = [ { hostName = "nixos-vm-01"; # Only availalbe on the Headscale network systems = [ "x86_64-linux" "aarch64-linux" ]; protocol = "ssh-ng"; maxJobs = 4; speedFactor = 2; supportedFeatures = [ "nixos-test" "benchmark" "big-parallel" "kvm" ]; mandatoryFeatures = [ ]; } ]; nix.distributedBuilds = true; nix.extraOptions = ''builders-use-substitutes = true''; }