From 9eca5294bbb01103ab13df1700d715cd067b4f6a Mon Sep 17 00:00:00 2001
From: Erik Arvstedt <erik.arvstedt@gmail.com>
Date: Mon, 22 Dec 2025 16:27:05 +0100
Subject: [PATCH] pyln-proto: fix for NixOS 25.11

coincurve 21 has no breaking changes:
https://github.com/ofek/coincurve/releases/tag/v21.0.0
---
 pkgs/python-packages/pyln-proto/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/python-packages/pyln-proto/default.nix b/pkgs/python-packages/pyln-proto/default.nix
index 9a7352b..b35b2e9 100644
--- a/pkgs/python-packages/pyln-proto/default.nix
+++ b/pkgs/python-packages/pyln-proto/default.nix
@@ -16,6 +16,11 @@ buildPythonPackage rec {
 
   inherit (clightning) src;
 
+  postPatch = ''
+    substituteInPlace pyproject.toml \
+      --replace-fail 'coincurve==20.0.0' 'coincurve==21.0.0'
+  '';
+
   nativeBuildInputs = [ hatchling ];
 
   propagatedBuildInputs = [