--- config/build-definitions.xml.orig	2023-12-18 14:22:59 UTC
+++ config/build-definitions.xml
@@ -100,7 +100,8 @@ This script is included in /build.xml and /config/upda
 
     <property name="lib" location="bin/libs" relative="true"/>
 
-    <property name="kotlinc" location="${lib}/kotlinc" relative="true"/>
+    <property name="kotlinc" location="${lib}/kotlinc" relative="true" unless:set="local.kotlin"/>
+    <property name="kotlinc" location="${local.kotlin}" relative="false" if:set="local.kotlin"/>
 
     <property name="module.lwjgl" location="modules/lwjgl" relative="true"/>