{ pkgs, ... }:

{
  imports = [
    ./hardware-configuration.nix
  ];

  nix.settings.experimental-features = [ "nix-command" "flakes" ];

  boot.loader.systemd-boot.enable = true;
  # Raspberry Pi has no NVRAM.
  boot.loader.efi.canTouchEfiVariables = false;

  boot.kernelPackages = pkgs.linuxPackages_rpi4;
  # https://github.com/NixOS/nixpkgs/issues/122130#issuecomment-1568815007
  # It's unclear if these are strictly necessary with the downstream kernel,
  # but let's leave them in to keep working with mainline.
  boot.initrd.availableKernelModules = [ "uas" "pcie-brcmstb" "reset-raspberrypi" ];

  networking.hostName = "creep";
  networking.domain = "mou.fo";

  networking.wireless.enable = true;
  networking.wireless.networks = {
    "Girls Gone Wireless".psk = "Paddlepops103!";
    "Cali's internet".psk = "calibanthetempest2019";
  };

  time.timeZone = "Australia/Sydney";
  users.users.joe = {
    isNormalUser = true;
    description = "Joe Mou";
    extraGroups = [ "wheel" ];
    openssh.authorizedKeys.keys = [
      "ssh-rsa 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 joe@sparky"
    ];
  };

  environment.systemPackages = with pkgs; [
    dig
    file
    gitFull
    libraspberrypi
    psmisc
    tmux
    tree
  ];

  programs.vim.defaultEditor = true;
  programs.nano.enable = false;

  services.openssh.enable = true;

  systemd.services.reverse-ssh = {
    description = "SSH reverse tunnel";
    wantedBy = [ "multi-user.target" ];
    after = [ "network-online.target" ];
    serviceConfig = {
      RestartSec = 60;
      Restart = "always";
    };
    script = ''
      ${pkgs.openssh}/bin/ssh \
          -o ServerAliveInterval=60 -o ExitOnForwardFailure=yes \
          -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no \
          -i /etc/ssh/ssh_host_ed25519_key \
          -N -R 19422:localhost:22 joe@popfresh.mou.fo
    '';
  };

  systemd.services.dyndns = {
    description = "Dynamic DNS update";
    after = [ "network-online.target" ];
    serviceConfig = {
      Type = "oneshot";
      TimeoutStartSec = "60s";
    };
    script = ''
      ${pkgs.curl}/bin/curl -4 -fsS https://dyn.dns.he.net/nic/update -d hostname=creep.he.mou.fo -d password=FriE83Y4HPWmwdYn
    '';
  };

  systemd.timers.dyndns = {
    wantedBy = [ "multi-user.target" ];
    timerConfig = {
      OnStartupSec = "10";
      OnUnitActiveSec = "5min";
    };
  };

  # This value determines the NixOS release from which the default
  # settings for stateful data, like file locations and database versions
  # on your system were taken. It's perfectly fine and recommended to leave
  # this value at the release version of the first install of this system.
  # Before changing this value read the documentation for this option
  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
  system.stateVersion = "23.11"; # Did you read the comment?
}