From ffb57fe2ca09473023e38e4f745368ff1363ba12 Mon Sep 17 00:00:00 2001
From: ChristopherCanfield <cdcanfield@gmail.com>
Date: Wed, 10 Dec 2025 15:18:50 -0500
Subject: [PATCH] Fix redefinition errors in module (regression fix)

Fixes type redefinition errors when compiling magic_enum as a module with the MAGIC_ENUM_USE_STD_MODULE preprocessor variable defined.
---
 include/magic_enum/magic_enum_format.hpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/magic_enum/magic_enum_format.hpp b/include/magic_enum/magic_enum_format.hpp
index 342dec4..603c111 100644
--- a/include/magic_enum/magic_enum_format.hpp
+++ b/include/magic_enum/magic_enum_format.hpp
@@ -59,7 +59,9 @@ std::string format_as(E e) {
 
 #if defined(__cpp_lib_format)
 
+#ifndef MAGIC_ENUM_USE_STD_MODULE
 #include <format>
+#endif
 
 template <typename E>
 struct std::formatter<E, std::enable_if_t<std::is_enum_v<std::decay_t<E>>, char>> : std::formatter<std::string_view, char> {