From f476046ee3d4e1b9c9c704ba256e8000dd995d8b Mon Sep 17 00:00:00 2001
From: bbalouki <bbalouki@outlook.com>
Date: Sat, 11 Jul 2026 11:12:17 +0100
Subject: [PATCH] ci: install gcc-toolset-13 for manylinux wheel builds

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
---
 pyproject.toml | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pyproject.toml b/pyproject.toml
index b9fb92c..178ea7f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -53,6 +53,15 @@ manylinux-aarch64-image = "manylinux_2_28"
 test-requires = "pytest"
 test-command = "pytest {project}/python/tests"
 
+[tool.cibuildwheel.linux]
+# manylinux_2_28's default gcc-toolset-12 doesn't ship <format> at all (GCC
+# only added std::format support in GCC 13), which the core library needs.
+before-all = "yum install -y gcc-toolset-13"
+
+[tool.cibuildwheel.linux.environment]
+CC = "/opt/rh/gcc-toolset-13/root/usr/bin/gcc"
+CXX = "/opt/rh/gcc-toolset-13/root/usr/bin/g++"
+
 [tool.cibuildwheel.macos.environment]
 # C++20 with libc++ needs a recent deployment target.
 MACOSX_DEPLOYMENT_TARGET = "11.0"