diff --git a/modules/base.nix b/modules/base.nix
index 48e4426..0e70404 100644
--- a/modules/base.nix
+++ b/modules/base.nix
@@ -64,11 +64,6 @@
     ];
   };
 
-  # List packages installed in system profile. To search, run:
-  # $ nix search wget
-  environment.systemPackages = with pkgs; [
-  ];
-
   # SystemMaxFileSize: Defaults to one eighth of the values configured with SystemMaxUse= and RuntimeMaxUse=, so that usually seven rotated journal files are kept as history.
   # MaxFileSec: To ensure that not too much data is lost at once when old journal files are deleted, it might make sense to change this value from the default of one month.
   # https://www.freedesktop.org/software/systemd/man/journald.conf.html
@@ -94,6 +89,9 @@
   # Delete all files in /tmp during boot.
   boot.tmp.cleanOnBoot = true;
 
+  # Whether to install NixOS’s own documentation.
+  documentation.nixos.enable = false;
+
   # Firewall.
   # https://nixos.wiki/wiki/Firewall
   # Note: Firewall rules may be bypassed/overwritten by Docker, as per https://github.com/NixOS/nixpkgs/issues/111852
diff --git a/modules/gnome-base.nix b/modules/gnome-base.nix
index 3d8d8ae..929d038 100644
--- a/modules/gnome-base.nix
+++ b/modules/gnome-base.nix
@@ -24,6 +24,8 @@
 
   # Enable the X11 windowing system.
   services.xserver.enable = true;
+  # Exclude xterm.
+  services.xserver.excludePackages = [ pkgs.xterm ];
 
   # Enable the GNOME Desktop Environment.
   services.xserver.displayManager.gdm.enable = true;