Index: libs/slang/CMakeLists.txt
--- libs/slang/CMakeLists.txt.orig
+++ libs/slang/CMakeLists.txt
@@ -5,7 +5,7 @@
 
 # slang - cmake entry point
 cmake_minimum_required(VERSION 3.20...3.29)
-
+add_compile_definitions(FMT_DEPRECATED_HEAVY_CORE)
 # Determine if slang is built as a subproject (using add_subdirectory) or if it
 # is the master project.
 if(NOT DEFINED SLANG_MASTER_PROJECT)
