From 60d3f709eb96ba5df9bdfede5c024c1f2db9f0e5 Mon Sep 17 00:00:00 2001
From: Alex Gaynor <alex.gaynor@gmail.com>
Date: Tue, 28 Mar 2023 22:11:23 -0400
Subject: [PATCH] Error cleanly in setup.py when using a too-old PyPy (#8634)

---
 setup.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/setup.py b/setup.py
index b3a7cf9b2..b05dc2f12 100644
--- a/setup.py
+++ b/setup.py
@@ -43,6 +43,9 @@ src_dir = os.path.join(base_dir, "src")
 # means that we need to add the src/ directory to the sys.path.
 sys.path.insert(0, src_dir)
 
+if hasattr(sys, "pypy_version_info") and sys.pypy_version_info < (7, 3, 10):
+    raise RuntimeError("cryptography is not compatible with PyPy3 < 7.3.10")
+
 try:
     # See pyproject.toml for most of the config metadata.
     setup(