From 14bd08b16c103337c82bddf1c1491f1dcf44fd24 Mon Sep 17 00:00:00 2001
From: Cody Young <william@werl.me>
Date: Tue, 21 Mar 2023 00:38:25 -0500
Subject: [PATCH] Add missing __index

---
 test-programs/logistics-pipes/pipe_driver.lua | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/test-programs/logistics-pipes/pipe_driver.lua b/test-programs/logistics-pipes/pipe_driver.lua
index 118ee92..c283d53 100644
--- a/test-programs/logistics-pipes/pipe_driver.lua
+++ b/test-programs/logistics-pipes/pipe_driver.lua
@@ -7,6 +7,7 @@ local driver = {}
 --------------------------------------------------------------------------------
 
 local ItemStack = {}
+ItemStack.__index = ItemStack
 
 local function ItemStack_new(item)
   checkArg(1, item, "table");
@@ -14,9 +15,7 @@ local function ItemStack_new(item)
     data = item.getValue1(),
     quantity = item.getValue2()
   }
-  for k,v in pairs(ItemStack) do
-    out[k] = v
-  end
+  setmetatable(out, ItemStack)
   return out
 end