Appears to be cryptography related. Works with and without the patch for
cryptography-45.0.6

From 7c0e4c6640bdc9cd60ac66d96d5d90f4377873db Mon Sep 17 00:00:00 2001
From: dotlambda <github@dotlambda.de>
Date: Tue, 21 Oct 2025 20:29:01 -0700
Subject: [PATCH] fix test_incorrect_public_key_hmac_signing

It used to fail with

    TypeError: curve must be an EllipticCurve instance
--- a/tests/algorithms/test_EC.py
+++ b/tests/algorithms/test_EC.py
@@ -235,7 +235,7 @@ def test_incorrect_public_key_hmac_signing():
     def b64(x):
         return base64.urlsafe_b64encode(x).replace(b"=", b"")
 
-    KEY = CryptographyEc.generate_private_key(CryptographyEc.SECP256R1)
+    KEY = CryptographyEc.generate_private_key(CryptographyEc.SECP256R1(), CryptographyEc.SECP256R1)
     PUBKEY = KEY.public_key().public_bytes(
         encoding=serialization.Encoding.OpenSSH,
         format=serialization.PublicFormat.OpenSSH,