{ config, pkgs, lib, ... }: # Start the conditional expression wrapping the entire attribute set (lib.mkIf (config.networking.hostName == "FredOS-Gaming") {     nixpkgs.config.packageOverrides = pkgs: {       pkgs = pkgs // {         # This is where you pull in 32-bit packages         lib32 = pkgs.pkgsi686Linux.pkgs;       };     };          environment.systemPackages = with pkgs; [       lutris       adwaita-icon-theme       nix-index       libdecor       pkgs.lib32.libdecor # FIXED: Access lib32 via pkgs.     ];     # Enables Vulkan and OpenGL drivers     hardware.graphics = {       enable = true;       enable32Bit = true;     };     programs.steam = {       enable = true;       remotePlay.openFirewall = true;       package = pkgs.steam.override {         extraPkgs = pkgs: with pkgs; [           kdePackages.breeze         ];       };     };     # Set libdecor plugin directory     environment.sessionVariables = {       LIBDECOR_PLUGIN_DIR = "${pkgs.libdecor}/lib/libdecor/plugins-1";       GTK_PATH = "${pkgs.gtk3}/lib/gtk-3.0:${pkgs.gtk4}/lib/gtk-4.0";     };     system.autoUpgrade = {       enable = true;       dates = "daily";       persistent = true;       allowReboot = false;       flags = [         "--upgrade"         "--option" "tarball-ttl" "0"       ];     }; # End the conditional expression })