{ config, lib, pkgs, ... }:

{
  environment.pathsToLink = [ "/libexec" ]; # links /libexec from derivations to /run/current-system/sw 
  # Define the i3 window manager configuration
  services.xserver = {
    xrandrHeads = [
      "HDMI-0 --auto --left-of DP-4"
      "DP-4 --auto --primary"
    ];

    enable = true;

    desktopManager = {
      xterm.enable = false;
    };
   
    displayManager.defaultSession = "none+i3";
    displayManager.lightdm.enable = true;
    displayManager.autoLogin.enable = true;
    displayManager.autoLogin.user = "mans";

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

    layout = "us";
    xkbVariant = "";
  };
  
  services.xserver.videoDrivers = [ "nvidia" ];
  hardware.opengl.enable = true;

  # Optionally, you may need to select the appropriate driver version for your specific GPU.
  hardware.nvidia.package = config.boot.kernelPackages.nvidiaPackages.stable;

  # nvidia-drm.modeset=1 is required for some wayland compositors, e.g. sway
  hardware.nvidia.modesetting.enable = true;
}