Make dependency on map mod optional

init.lua

@@ -741,6 +741,16 @@ minetest.register_globalstep(
 	end
 )
 
+minetest.register_craftitem(
+	"maps:map",
+	{
+		description = "Map",
+		inventory_image = "maps_map.tga",
+		groups = { not_in_creative_inventory = 1 },
+	}
+)
+
+if minetest.registered_items["map:mapping_kit"] then
 	minetest.override_item(
 		"map:mapping_kit",
 		{
@@ -763,12 +773,4 @@ minetest.override_item(
 			end,
 		}
 	)
-
-minetest.register_craftitem(
-	"maps:map",
-	{
-		description = "Map",
-		inventory_image = "maps_map.tga",
-		groups = { not_in_creative_inventory = 1 },
-	}
-)
+end

mod.conf

@@ -1,3 +1,4 @@
-depends = map, tga_encoder
+depends = tga_encoder
+optional_depends = map
 description = Shows maps in the player HUD
 name = maps