{ config, pkgs, lib, ... }:
let cfg = config.custom.graphical.i3;
in {

  options = {
    custom.graphical.i3.enable = lib.mkOption {
      type = lib.types.bool;
      default = false;
      description = "Enable i3 window manager";
    };
  };

  config = lib.mkIf cfg.enable {
    environment.pathsToLink = [
      "/libexec"
    ]; # links /libexec from derivations to /run/current-system/sw

    xdg = {
      portal = {
        enable = true;
        extraPortals = with pkgs; [ libsForQt5.xdg-desktop-portal-kde ];
        config.common.default = "*";
      };
    };

    custom.graphical.sddm.enable = true;
    services = {
      displayManager = {
        defaultSession = "none+i3";
      };

      xserver = {
        enable = true;

        xkb.layout = config.mainUser.layout;
        xkb.variant = config.mainUser.variant;
        desktopManager = { xterm.enable = false; };

        windowManager.i3 = {
          enable = true;
          extraPackages = with pkgs; [
            i3status # gives you the default i3 status bar
            i3lock-color # i3 screen locker
            i3blocks # if you are planning on using i3blocks over i3status
          ];
        };
      };
    };

    environment.systemPackages = with pkgs; [
      picom # compositor
      rofi # application
      maim # takes screenshots
      xclip
      dex # starts applications according to .desktop files
      xss-lock # locks the screen when the system is idle
      pavucontrol
      libsForQt5.dolphin
      playerctl
      brightnessctl
      i3blocks
      autotiling
      pmutils # suspend with pm-suspend
      lm_sensors # for cpu in polybar
      feh # sets the wallpaper
      networkmanagerapplet
    ];
  };
}