Add a hook for setting up device drivers

scripts/Arch/OS/setup.fish

@@ -35,8 +35,14 @@ begin
             networkmanager \
             man-db \
             man-pages \
-            texinfo \
-            ;
+            texinfo
+
+        and if type -q installDrivers
+            echo "Installing drivers…"
+            installDrivers
+        else
+            true
+        end
 
         and "$dir/../../copy-repo.fish" "$ARCH_MOUNT_ROOT$tempRoot"
         and genfstab -U "$ARCH_MOUNT_ROOT" >> "$ARCH_MOUNT_ROOT/etc/fstab"