From: Daniele Varrazzo <daniele.varrazzo@gmail.com>
Date: Thu, 8 May 2025 23:47:26 +0000 (+0200)
Subject: fix(c): don't use Cython 3.1 or following to build the extension
X-Git-Url: http://git.ipfire.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=b25af4f8427361f5f803b4e0945d525088a5bcd9;p=thirdparty%2Fpsycopg.git

fix(c): don't use Cython 3.1 or following to build the extension

The resulting module seems affected by a memory leak.

https://github.com/cython/cython/issues/6850
---

diff --git a/psycopg_c/pyproject.toml b/psycopg_c/pyproject.toml
index 905dfd0ed..cb332ec39 100644
--- a/psycopg_c/pyproject.toml
+++ b/psycopg_c/pyproject.toml
@@ -19,7 +19,12 @@ backend-path = ["build_backend"]
 
 [cython-backend]
 # These packages are only installed if there are pyx files to compile.
-cython-requires = ["Cython >= 3.0.0"]
+
+# Don't install Cython 3.1: https://github.com/cython/cython/issues/6850
+# TODO: When the bug is solved we will remove the upper bound of the version
+# and just exclude the known broken versions, or we will establish a new
+# lower bound.
+cython-requires = ["Cython >= 3.0.0, < 3.1.0"]
 
 [project]
 name = "psycopg-c"