{ host, rpi4, experimental-users ? false }: { config, pkgs, ... }: let artiq = builtins.getFlake git+https://github.com/m-labs/artiq.git; in { deployment.targetHost = host; deployment.hasFastConnection = true; nix.nixPath = [ "nixpkgs=${pkgs.path}" ]; programs.command-not-found.dbPath = "${pkgs.path}/programs.sqlite"; nixpkgs.system = "aarch64-linux"; boot.loader.grub.enable = false; boot.loader.generic-extlinux-compatible.enable = true; boot.kernelParams = if rpi4 then ["cma=64M"] else []; # work around https://github.com/raspberrypi/linux/issues/3208 boot.initrd.includeDefaultModules = false; fileSystems = { "/" = { device = "/dev/disk/by-label/NIXOS_SD"; fsType = "ext4"; }; }; services.openssh.enable = true; services.openssh.passwordAuthentication = false; services.openssh.gatewayPorts = "clientspecified"; services.openssh.extraConfig = '' StreamLocalBindUnlink yes ''; programs.mosh.enable = true; networking.hostName = host; networking.firewall.allowedTCPPorts = if host == "rpi-2" then [ 6000 ] else []; time.timeZone = "Asia/Hong_Kong"; users.extraGroups.plugdev = { }; users.mutableUsers = false; users.defaultUserShell = pkgs.fish; users.extraUsers = (import ./common-users.nix { inherit pkgs; }) // (pkgs.lib.optionalAttrs experimental-users (import ./experimental-users.nix { inherit pkgs; })) // { nixbld = { isNormalUser = true; extraGroups = ["plugdev" "dialout"]; openssh.authorizedKeys.keys = [ "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGJGICdNM9mHHAa1Cxk9Wz3YLkIEeqrIQGxM0aoy1g5O" ]; }; }; security.sudo.wheelNeedsPassword = false; services.udev.packages = [ artiq.packages.aarch64-linux.openocd-bscanspi ]; services.udev.extraRules = (import ./extra-udev.nix); documentation.enable = false; environment.systemPackages = with pkgs; [ psmisc wget vim git sshfs usbutils uhubctl lm_sensors file mosh tmux artiq.packages.aarch64-linux.openocd-bscanspi xc3sprog screen gdb minicom picocom ]; programs.zsh.enable = true; programs.fish.enable = true; programs.wireshark.enable = true; nix.settings.trusted-public-keys = ["nixbld.m-labs.hk-1:5aSRVA5b320xbNvu30tqxVPXpld73bhtOeH6uAjRyHc="]; nix.settings.substituters = ["https://nixbld.m-labs.hk?priority=10"]; nix.settings.trusted-users = ["root" "sb"]; nix.extraOptions = '' experimental-features = nix-command flakes impure-derivations ''; }