{ inputs, config, pkgs, ... }:
{
  nix.settings = {
    trusted-substituters = [
      "https://t2linux.cachix.org"
    ];
    trusted-public-keys = [
      "t2linux.cachix.org-1:P733c5Gt1qTcxsm+Bae0renWnT8OLs0u9+yfaK2Bejw="
    ];
  };
  imports = [
      # ./t2.nix
      # "${builtins.fetchGit { url = "https://github.com/kekrby/nixos-hardware.git"; }}/apple/t2"
      ./hardware-configuration.nix
      ../common.nix
      ../modules
      #inputs.mms.module
  ];

  # boot.supportedFilesystems = pkgs.lib.mkForce [ "ext4" "btrfs" "squashfs" ];
  # networking.wireless.enable = pkgs.lib.mkForce false;

  # services.xserver.displayManager.autoLogin.user = pkgs.lib.mkForce "jade";
  # users.users.jade = pkgs.lib.mkForce {
  #   isNormalUser = true;
  #   extraGroups = [ "wheel" "input" "uinput" "libvirtd" ];
  #   packages = with pkgs; [
  #   ];
  # };

  nixpkgs = {
    overlays = [
      (self: super: {
        linux_zen_xeniafied = pkgs.linuxPackagesFor (pkgs.linuxKernel.kernels.linux_zen.override {
          structuredExtraConfig = with lib.kernel; {
            #"FB" = yes;
            #"FRAMEBUFFER_CONSOLE" = yes;
            #"VGA_CONSOLE" = yes;
            #"VIDEO_SELECT" = yes;
            LOGO = lib.mkForce yes;
            LOGO_LINUX_CLUT224 = yes;
          };
          ignoreConfigErrors = true;
        });
      })
    ];
  };
  boot.kernelPatches = [ 
    {
      name = "fomx";
      patch = ../other/0001-fomx.patch;
    } 
  ];

  jade = {
    flatpak.enable = true;
    desktop = {
      enable = true;
      compositing.enable = true;
      creative.enable = true;
      syncthing.enable = true;
      kdeconnect.enable = true;
      cloud.enable = true;
      social.enable = true;
      mail.enable = true;
    };
    terminal.enable = true;
    neovim.enable = true;
    zsh.enable = true;
  };

  fileSystems = {
    "/".options = [ "compress=zstd:3" ];
    "/home".options = [ "compress=zstd:3" ];
    "/nix".options = [ "compress=zstd:3" "noatime" ];
    #"/swap".options = [ "noatime" ];
  };

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

  networking.networkmanager.enable = true;

  networking.hostName = "potatobook-g";


  services.xserver = {
    resolutions = [ { x = 1920; y = 1200; } ];
    # dpi = 180;
    layout = "us";
    xkbVariant = "altgr-intl";
  };

  services.autorandr = {
    enable = true;
    profiles = {
      "default" = {
        config = {
          "eDP-1" = {
            enable = true;
            mode = "1920x1200";
          };
        };
      };
    };
  };

  # environment.variables = {
  #   GDK_SCALE = "2";
  #   GDK_DPI_SCALE = "0.5";
  #   _JAVA_OPTIONS = "-Dsun.java2d.uiScale=2";
  # };

  hardware.bluetooth.enable = true;
  hardware.keyboard.uhk.enable =  true;


  # missing: menu-qalc picom-jonaburg
  environment.systemPackages = with pkgs; [
    # TODO: clean up.
  ];

  environment.pathsToLink = [
    "/share/nix-direnv"
  ];

  services.blueman.enable = true;

  services.gnome.gnome-keyring.enable = true;
  programs.seahorse.enable = true;
  security.pam.services.jade.enableGnomeKeyring = true;

  # Copy the NixOS configuration file and link it from the resulting system
  # (/run/current-system/configuration.nix). This is useful in case you
  # accidentally delete configuration.nix.
  # system.copySystemConfiguration = true;

  # networking.firewall.allowedTCPPorts = [ 4713 ];
  systemd.services."NetworkManager-wait-online".enable = false;

  #services.modded-minecraft-servers = {
    # This is mandatory, sorry.
    #eula = true;

    # The name will be used for the state folder and system user.
    # In this case, the folder is `/var/lib/mc-e2es`
    # and the user `mc-e2es`.
    #instances = {
      #e2es = {
        #enable = true;
        #jvmMaxAllocation = "7G";
        #jvmInitialAllocation = "2G";
        #rsyncSSHKeys = [ "" ];
        #serverConfig = {
          ## Port must be unique
          #white-list = true;
          #spawn-protection = 0;
          #max-tick-time = 5 * 60 * 1000;
          #allow-flight = true;
          #server-port = 8080;
          #motd = "Hello world";
        #};
      #};
    #};
  #};

  # i rly should put that important big comment back here
  system.stateVersion = "22.11"; # Did you read the comment?

  systemd.services = {
    create-swapfile = {
      serviceConfig.Type = "oneshot";
      wantedBy = [ "swap-swapfile.swap" ];
      script = ''
        swapfile="/swap/swapfile"
        if [[ -f "$swapfile" ]]; then
          echo "Swap file $swapfile already exists, taking no action"
        else
          echo "Setting up swap file $swapfile"
          ${pkgs.coreutils}/bin/truncate -s 0 "$swapfile"
          ${pkgs.e2fsprogs}/bin/chattr +C "$swapfile"
        fi
      '';
    };
  };

  services.logind.extraConfig = ''
    RuntimeDirectorySize=12G
  '';

  #networking = {
    #nameservers = [ 
      #"192.168.8.205" 
    #];
    #wireguard = {
      #enable = true;
      #interfaces = {
        #wg-maxim-vpn = {
          #privateKey = "CLcq8sCnusXz0jFHz6ODAZBD2Sn2vb9a5BCfbQGrrXk=";
          #listenPort = 21124;
          #ips = [
            #"10.0.0.4/32"
          #];
          #peers = [
            #{
              #allowedIPs = [ 
                #"10.0.0.0/24" 
                #"192.168.8.0/24"
                #"0.0.0.0/0"
                #"::/0" 
              #];
              #endpoint = "vpn.local.germannr4.com:51820";
              #persistentKeepalive = 25;
              #publicKey = "coP4Hh1smQvVI52ftZFyPfmzvsKZcT/hHa8zHMrlZwE=";
            #}
          #];
        #};
      #};
    #};
  #};

  #fileSystems."/swap" = { 
  #  device = "/dev/disk/by-uuid/f6d243ec-6be9-4551-8cbb-aefb7b691a62";
  #  fsType = "btrfs";
  #  options = [ "subvol=swap" "noatime" ];
  #};
  #systemd.services.nix-daemon.environment.NIX_SSHOPTS = let
    #knownHosts = pkgs.writeText "known-hosts" ''
      #${builtins.readFile ../secret-data/ssh-desktop-knownhosts-thingies}
    #'';
  #in builtins.trace "-oIdentityFile=/home/jade/.ssh/id_rsa -oUserKnownHostsFile=${knownHosts}" "-v -oIdentityFile=/home/jade/.ssh/id_rsa -oUserKnownHostsFile=/home/jade/nix-configs/secret-data/ssh-desktop-knownhosts-thingies";
}