From e68f1f8ba138b4e2b8066fbed7050931ce22fc66 Mon Sep 17 00:00:00 2001
From: David Lawson <davidlawson@gambitresearch.com>
Date: Tue, 18 Nov 2025 15:11:56 +0000
Subject: [PATCH] Limit max cython version to build with

This is a workaround until a new version of Cython is released with https://github.com/cython/cython/pull/7314
---
 setup.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/setup.py b/setup.py
index 197544dd..a3ae716d 100644
--- a/setup.py
+++ b/setup.py
@@ -59,6 +59,7 @@
 """
 
 MIN_REQUIRED_CYTHON_VERSION = "0.29.30"
+MAX_CYTHON_VERSION = "3.1.7"
 
 ###############################################################################
 # Custom distutils commands
@@ -167,7 +168,7 @@ def getext(fname):
 
 if USE_CYTHON:
     ext_modules = get_cython_extensions()
-    extra_install_requires = [f'cython>={MIN_REQUIRED_CYTHON_VERSION}']
+    extra_install_requires = [f'cython>={MIN_REQUIRED_CYTHON_VERSION},<={MAX_CYTHON_VERSION}']
 else:
     ext_modules = []
     extra_install_requires = []