{
  config,
  pkgs,
  lib,
  inputs,
  ...
}:
let
  configure-gtk = pkgs.writeTextFile {
    name = "configure-gtk";
    destination = "/bin/configure-gtk";
    executable = true;
    text =
      let
        schema = pkgs.gsettings-desktop-schemas;
        datadir = "${schema}/share/gsettings-schemas/${schema.name}";
      in
      ''
        export XDG_DATA_DIRS=${datadir}:$XDG_DATA_DIRS
        gnome_schema=org.gnome.desktop.interface
        gsettings set $gnome_schema gtk-theme 'Dracula'
      '';
  };
in
{
  environment.systemPackages = with pkgs; [
    wl-clipboard # Copy/Paste functionality.
    mako # Notification utility.
  ];

  # Enables Gnome Keyring to store secrets for applications.
  services.gnome.gnome-keyring.enable = true;

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

  security.polkit.enable = true;

  # Enable Sway.
  programs.sway = {
    enable = true;
    wrapperFeatures.gtk = false;
    extraPackages = [
      pkgs.foot
      pkgs.swayidle
      pkgs.swaylock
      pkgs.wmenu
      pkgs.wl-clipboard
      pkgs.mako
      pkgs.kdePackages.kate
      pkgs.kdePackages.filelight
      inputs.glide.packages.${pkgs.stdenv.hostPlatform.system}.default
      pkgs.swaybg
      pkgs.pulseaudioFull
      pkgs.waybar
      pkgs.dracula-theme # gtk theme
      pkgs.brightnessctl
      configure-gtk
    ];
  };

  services.greetd = {
    enable = true;
    settings = {
      default_session = {
        command = "${pkgs.tuigreet}/bin/tuigreet --remember --time --cmd sway";
        user = "greeter";
      };
    };
  };
}