add steam, nvidia drivers, and fix gnome titlebars

systems/x86_64-linux/drivebystation-nix/configuration.nix

@@ -6,8 +6,9 @@
 
 {
   imports =
-    [ # Include the results of the hardware scan.
+    [ 
       ./hardware-configuration.nix
+      ./nvidia.nix
     ];
 
   # Bootloader.
@@ -80,16 +81,6 @@
   # Enable touchpad support (enabled default in most desktopManager).
   # services.xserver.libinput.enable = true;
 
-  # Define a user account. Don't forget to set a password with ‘passwd’.
-  users.users.andreas = {
-    isNormalUser = true;
-    description = "Andreas Schaafsma";
-    extraGroups = [ "networkmanager" "wheel" ];
-    packages = with pkgs; [
-    #  thunderbird
-    ];
-  };
-
   # Install firefox.
   programs.firefox.enable = true;