make stairs from cement too.

stairsplus/registrations.lua

@@ -125,6 +125,15 @@ if minetest.get_modpath("basic_materials") then
 
 	minetest.register_alias("prefab:concrete_stair","technic:stair_concrete")
 	minetest.register_alias("prefab:concrete_slab","technic:slab_concrete")
+
+	stairsplus:register_all("gloopblocks", "cement", "basic_materials:cement_block", {
+		description = "Cement",
+		tiles = {"basic_materials_cement_block.png"},
+		groups = {cracky=2, not_in_creative_inventory=1},
+		sounds = default.node_sound_stone_defaults(),
+		sunlight_propagates = true,
+	})
+
 end
 
 -- Alias cuts of split_stone_tile_alt which was renamed checker_stone_tile.