[libc++] Granularize <concept> includes
Reviewed By: ldionne, #libc
Spies: libcxx-commits
Differential Revision: https://reviews.llvm.org/D137283
NOKEYCHECK=True
GitOrigin-RevId: 89b356f05ab7aa3d96fc7b68aece6e7a5bdb0db5
diff --git a/include/numeric b/include/numeric
index 64cd45b..2fb6f9e 100644
--- a/include/numeric
+++ b/include/numeric
@@ -172,6 +172,7 @@
#endif
#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
+# include <concepts>
# include <functional>
# include <iterator>
#endif