From 1a1ae37287ea168202a4c71c83eb7373837fe7ff Mon Sep 17 00:00:00 2001
From: "J. Neto" <jnetod@tuta.io>
Date: Tue, 18 May 2021 02:49:44 -0300
Subject: [PATCH] pythonPackages.vdirsyncer: fix build with python 3.9

---
 pkgs/development/python-modules/vdirsyncer/default.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pkgs/development/python-modules/vdirsyncer/default.nix b/pkgs/development/python-modules/vdirsyncer/default.nix
index 1f7642bfe34..01ab42ed9c3 100644
--- a/pkgs/development/python-modules/vdirsyncer/default.nix
+++ b/pkgs/development/python-modules/vdirsyncer/default.nix
@@ -1,6 +1,7 @@
 { lib
 , buildPythonPackage
 , fetchPypi
+, fetchpatch
 , isPy27
 , click
 , click-log
@@ -45,6 +46,14 @@ buildPythonPackage rec {
     pytest-subtesthack
   ];
 
+  patches = [
+    (fetchpatch {
+      name = "update-usage-deprecated-method.patch";
+      url = "https://github.com/pimutils/vdirsyncer/commit/7577fa21177442aacc2d86640ef28cebf1c4aaef.patch";
+      sha256 = "0inkr1wfal20kssij8l5myhpjivxg8wlvhppqc3lvml9d1i75qbh";
+    })
+  ];
+
   postPatch = ''
     substituteInPlace setup.py --replace "click>=5.0,<6.0" "click"
   '';