nixos-servers/configuration.nix

{ pkgs, config, lib, machine, disko, agenix, nixos-hardware, ... }: {
  imports = [
    ./nixos-modules
    machine.nixosModule
    disko.nixosModules.disko
    agenix.nixosModules.default
  ] ++ lib.lists.optional (machine.isRaspberryPi) nixos-hardware.nixosModules.raspberry-pi-4;

  config = {
    time.timeZone = "Europe/Amsterdam";
    hardware.cpu.intel.updateMicrocode = lib.mkIf (! machine.isRaspberryPi) config.hardware.enableRedistributableFirmware;
    age.identityPaths = [ "/etc/age_ed25519" ];
    nixpkgs.config.allowUnfree = true;

    i18n = {
      defaultLocale = "en_US.UTF-8";

      extraLocaleSettings = let extraLocale = "nl_NL.UTF-8"; in {
        LC_ADDRESS = extraLocale;
        LC_IDENTIFICATION = extraLocale;
        LC_MEASUREMENT = extraLocale;
        LC_MONETARY = extraLocale;
        LC_NAME = extraLocale;
        LC_NUMERIC = extraLocale;
        LC_PAPER = extraLocale;
        LC_TELEPHONE = extraLocale;
        LC_TIME = extraLocale;
      };
    };

    services = {
      openssh = {
        enable = true;
        openFirewall = true;

        settings = {
          PasswordAuthentication = false;
          KbdInteractiveAuthentication = false;
        };
      };

      xserver = {
        layout = "us";
        xkbVariant = "";
      };
    };

    users.users.root.openssh.authorizedKeys.keys = [
      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOodpLr+FDRyKyHjucHizNLVFHZ5AQmE9GmxMnOsSoaw pimkunis@thinkpadpim"
      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINUZp4BCxf7uLa1QWonx/Crf8tYZ5MKIZ+EuaBa82LrV user@user-laptop"
    ];

    programs.neovim = {
      enable = true;
      vimAlias = true;
      viAlias = true;
    };

    environment.systemPackages = with pkgs; [
      neofetch
      wget
      git
      btop
      htop
      ripgrep
      dig
      tree
      file
      tcpdump
      lsof
      parted
      radvd
      minicom
      socat
      pciutils
      dmidecode
      openssl
      nfs-utils
      rsync
      fio
      libva-utils
    ];

    boot = lib.mkIf (! machine.isRaspberryPi) {
      kernelModules = [ "kvm-intel" ];
      extraModulePackages = [ ];

      initrd = {
        kernelModules = [ ];

        availableKernelModules = [
          "ahci"
          "xhci_pci"
          "nvme"
          "usbhid"
          "usb_storage"
          "sd_mod"
          "sdhci_pci"
        ];
      };

      loader = {
        systemd-boot.enable = true;
        efi.canTouchEfiVariables = true;
      };
    };

    nix = {
      package = pkgs.nixFlakes;

      extraOptions = ''
        experimental-features = nix-command flakes
      '';
    };

    system = {
      stateVersion = "23.05";

      activationScripts.diff = ''
        if [[ -e  /run/current-system ]]; then
          ${pkgs.nix}/bin/nix store diff-closures /run/current-system "$systemConfig"
        fi
      '';
    };
  };
}