{
  inputs,
  outputs,
  lib,
  config,
  pkgs,
  ...
}: let
  my-python-packages = python-packages:
    with python-packages; [
      pip
      # pipx
      python-dateutil
      setuptools
      requests
      docx2txt
    ];
  python-with-my-packages = pkgs.python3Full.withPackages my-python-packages;
in {
  nix = {
    settings = {
      experimental-features = ["nix-command" "flakes"];
      warn-dirty = false;
      auto-optimise-store = true;
      trusted-users = ["root" "don"];
    };
    gc = {
      automatic = true;
      dates = "weekly";
      options = "--delete-older-than 7d";
    };
  };
  imports = [
    ../../home
    ../../home/gui
    ./detect-reboot-needed.nix
    ./systemd.nix
    ./tailscale.nix
    ./upgrade-diff.nix
    ../wm/greetd
  ];

  # Enable networking
  networking.networkmanager.enable = true;
  networking.enableIPv6 = true;
  networking.networkmanager.wifi.powersave = true;
  networking.useDHCP = false;

  # Set your time zone.
  time = {
    timeZone = "America/Chicago";
    hardwareClockInLocalTime = false;
  };

  # Select internationalisation properties.
  i18n = {
    defaultLocale = "en_US.utf8";
    inputMethod = {
      enabled = true;
      type = "fcitx5";
      fcitx5.addons = with pkgs; [
        fcitx5-mozc
        fcitx5-gtk
      ];
    };
  };

  # Bootloader.
  boot = {
    kernelPackages = pkgs.linuxPackages_latest;
    kernelParams = ["consoleblank=60"];
    # extraModulePackages = [config.boot.kernelPackages.ddcci-driver];
    # kernelModules = ["i2c-dev" "ddcci_backlight"];
    loader =
      if (pkgs.hostPlatform != lib.mkDefault "aarch64-linux")
      then {
        systemd-boot = {
          enable = true;
        };
        efi = {
          canTouchEfiVariables = true;
          efiSysMountPoint = "/boot";
        };
      }
      else {
        grub.enable = false;
        generic-extlinux-compatible.enable = true;
      };
    plymouth = {
      enable = true;
    };
    kernel = {
      sysctl = {"vm.swappiness" = 10;};
    };
  };

  security = {
    polkit = {
      enable = true;
    };
    sudo.enable = false;
    doas = {
      enable = true;
      extraRules = [
        {
          users = ["don"];
          keepEnv = true;
          noPass = true;
        }
      ];
    };
  };

  services = {
    udev = {
      extraRules = ''
        ACTION=="add|change", KERNEL=="sd[a-z]*[0-9]*|mmcblk[0-9]*p[0-9]*|nvme[0-9]*n[0-9]*p[0-9]*", ENV{ID_FS_TYPE}=="ext4", ATTR{../queue/scheduler}="none"
      '';
    };
    kmscon = {
      enable = true;
      fonts = [
        {
          name = "Source Code Pro";
          package = pkgs.source-code-pro;
        }
      ];
      extraConfig = ''
        font-size=10
        palette=custom
        palette-black=33, 34, 44
        palette-cyan=128, 255, 234
        palette-dark-grey=182, 185, 201
        palette-green=138, 255, 128
        palette-dark-grey=65, 69, 88
        palette-light-grey=98, 103, 132
        palette-light-green=208, 255, 204
        palette-light-red=255, 212, 204
        palette-light-yellow=255, 255, 204
        palette-red=255, 149, 128
        palette-white=248, 248, 242
        palette-yellow=255, 255, 128
      '';
    };
    pcscd = {
      enable = true;
    };
    avahi = {
      enable = true;
      nssmdns4 = true;
    };
    printing = {
      enable = true;
    };
    udisks2 = {
      enable = true;
    };
    nscd = {
      enableNsncd = true;
    };
    fwupd = {
      enable = true;
    };
    flatpak = {
      enable = true;
    };
    fstrim = {
      enable = true;
    };
    pipewire = {
      enable = true;
      alsa = {
        enable = true;
        support32Bit = true;
      };
      pulse = {
        enable = true;
      };
    };
    tailscale = {
      enable = true;
    };
    logind = {
      lidSwitchExternalPower = "ignore";
      lidSwitchDocked = "ignore";
    };
    locate = {
      enable = true;
      package = pkgs.mlocate;
      localuser = null;
    };
    openssh = {
      enable = true;
      settings = {
        PasswordAuthentication = false;
        KbdInteractiveAuthentication = false;
        #PermitRootLogin = "yes";
      };
    };
  };

  hardware = {
    bluetooth = {
      enable = true;
    };
    pulseaudio = {
      enable = false;
    };
    sane = {
      enable = true;
      extraBackends = [pkgs.sane-airscan];
    };
  };
  security.rtkit.enable = true;

  xdg.portal = {
    enable = true;
    wlr.enable = true;
    extraPortals = [
      pkgs.xdg-desktop-portal-gtk
      pkgs.xdg-desktop-portal-wlr
    ];
  };

  users = {
    users = {
      root = {
        initialPassword = "changeme";
        description = "root of all evil";
        openssh.authorizedKeys.keys = [
          "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINd8AdVbQQ/Fmw+b9mI8EMYqIoRkwmSwAOtmlte3incL don@loki"
        ];
      };
      don = {
        isNormalUser = true;
        initialPassword = "changeme";
        description = "Don Harper";
        extraGroups = ["networkmanager" "wheel" "scanner" "lp" "video" "mlocate" "disk"];
        openssh.authorizedKeys.keys = [
          "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINd8AdVbQQ/Fmw+b9mI8EMYqIoRkwmSwAOtmlte3incL don@loki"
        ];
      };
    };
  };

  zramSwap = {
    enable = true;
    memoryPercent = 25;
    memoryMax = 2147483648;
  };

  # Allow unfree packages
  nixpkgs.config.allowUnfree = true;
  nixpkgs.config.permittedInsecurePackages = ["electron-25.9.0"];

  environment.systemPackages = with pkgs; [
    #(callPackage ../mypackages/kanshi-fix/default.nix {})
    python-with-my-packages
    acpi
    alejandra
    aspell
    aspellDicts.en
    base16-schemes
    bash-completion
    brightnessctl
    btop
    espeak-classic
    fwup
    fwupd
    fwupd-efi
    git-crypt
    gitFull
    headsetcontrol
    home-manager
    hunspell
    hunspellDicts.en_US
    imagemagick
    isync
    libsForQt5.qtkeychain
    lsb-release
    lsof
    nix-bash-completions
    pkg-config
    playerctl
    poppler_utils
    pulseaudio
    ruby
    udiskie
    wireplumber
    wlsunset
    xdg-utils
    xfce.thunar
    zathura
  ];

  programs = {
    dconf = {
      enable = true;
    };
    light = {
      enable = true;
    };
    mtr = {
      enable = true;
    };
    kdeconnect = {
      enable = true;
    };
    gnupg = {
      agent = {
        enable = true;
        pinentryPackage = pkgs.pinentry-curses;
        enableSSHSupport = true;
      };
    };
  };

  nixpkgs.overlays = [
    (final: prev: {qutebrowser = prev.qutebrowser.override {enableWideVine = true;};})
    (final: super: {khal = super.khal.overridePythonAttrs (_: {doCheck = false;});})
  ];

  # Open ports in the firewall.
  networking.firewall = {
    enable = true;
    # always allow traffic from your Tailscale network
    trustedInterfaces = ["tailscale0"];
    checkReversePath = "loose";

    # allow the Tailscale UDP port through the firewall
    allowedUDPPorts = [config.services.tailscale.port];
    allowedTCPPortRanges = [
      {
        from = 1714;
        to = 1764;
      }
    ];
    allowedUDPPortRanges = [
      {
        from = 1714;
        to = 1764;
      }
    ];

    # allow you to SSH in over the public internet
    allowedTCPPorts = [22];
    interfaces = {
      "tailscale0" = {
        allowedTCPPorts = [22 8080 8443];
        allowedTCPPortRanges = [
          {
            from = 1714;
            to = 1764;
          }
        ];
        allowedUDPPortRanges = [
          {
            from = 1714;
            to = 1764;
          }
        ];
      };
    };
  };

  # 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 leavecatenate(variables, "bootdev", bootdev)
  # 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?
  programs.msmtp = {
    enable = true;
    accounts = {
      default = {
        auth = true;
        tls = true;
        port = 587;
        from = "duck@duckland.org";
        host = "smtp.gmail.com";
        user = "duckunix@gmail.com";
        passwordeval = "cat /home/don/.smtp_password.txt";
      };
    };
  };
  xdg.mime.enable = true;
  xdg.mime.defaultApplications = {
    "text/html" = "org.qutebrowser.qutebrowser.desktop";
    "x-scheme-handler/http" = "org.qutebrowser.qutebrowser.desktop";
    "x-scheme-handler/https" = "org.qutebrowser.qutebrowser.desktop";
    "x-scheme-handler/about" = "org.qutebrowser.qutebrowser.desktop";
    "x-scheme-handler/unknown" = "org.qutebrowser.qutebrowser.desktop";
  };
  environment.sessionVariables.DEFAULT_BROWSER = "${pkgs.qutebrowser}/bin/qutebrowser";
}