From b497ee4bc5f9708f1a7b37cc86bf5150d028fb3a Mon Sep 17 00:00:00 2001
From: Stefan Harmuth <pennywise@drock.de>
Date: Sat, 3 Dec 2022 06:23:12 +0100
Subject: [PATCH] actually never implemented a simple list intersection?

---
 tools/tools.py | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/tools/tools.py b/tools/tools.py
index 824c1a1..f70eeaa 100644
--- a/tools/tools.py
+++ b/tools/tools.py
@@ -3,7 +3,7 @@ import inspect
 import os.path
 import sys
 from functools import wraps
-from typing import Any, Union
+from typing import Any, Union, List
 
 
 def get_script_dir(follow_symlinks: bool = True) -> str:
@@ -76,3 +76,11 @@ def cache(func):
         return result
 
     return newfunc
+
+
+def list_intersection(*args) -> list:
+    ret = set(args[0])
+    for l in args[1:]:
+        ret = ret.intersection(l)
+
+    return list(ret)
\ No newline at end of file