diff --git a/main.py b/main.py
index 966c264..5c9cb0a 100644
--- a/main.py
+++ b/main.py
@@ -1,4 +1,15 @@
+import sys
+
 from dist_scripts import build
+from dist_scripts import patchers
+
+mode = "build"
+args = sys.argv
+if len(args) > 1:
+    mode = args[1]
 
 if __name__ == '__main__':
-    build()
+    if mode == "build":
+        build()
+    elif mode == "core":
+        patchers.patch_core_build()