https://github.com/pytoolz/toolz/issues/623
https://github.com/pytoolz/toolz/pull/624

From 8f23a9a2d5f07ff0c790ee1e2bdef023ff252cc1 Mon Sep 17 00:00:00 2001
From: Karolina Surma <ksurma@redhat.com>
Date: Thu, 21 May 2026 23:30:41 +0200
Subject: [PATCH] Add frozendict signature (Python 3.15 compatibility)

--- a/toolz/_signatures.py
+++ b/toolz/_signatures.py
@@ -109,6 +109,9 @@
     format=[
         lambda value: None,
         lambda value, format_spec: None],
+    frozendict=[
+        lambda **kwargs: None,
+        lambda mapping, **kwargs: None],
     frozenset=[
         lambda: None,
         lambda iterable: None],