From a9c41f8f5dfcb04fb78816e9214ce3e3b082ae14 Mon Sep 17 00:00:00 2001
From: Frederik Rietdijk <fridh@fridh.nl>
Date: Thu, 14 Feb 2019 11:51:52 +0100
Subject: [PATCH] python.pkgs.characteristic: fix pytest 4 incompatibility

---
 pkgs/development/python-modules/characteristic/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/python-modules/characteristic/default.nix b/pkgs/development/python-modules/characteristic/default.nix
index 1c42b1283ee..f082510713a 100644
--- a/pkgs/development/python-modules/characteristic/default.nix
+++ b/pkgs/development/python-modules/characteristic/default.nix
@@ -13,6 +13,10 @@ buildPythonPackage rec {
 
   checkInputs = [ pytest ];
 
+  postPatch = ''
+    substituteInPlace setup.cfg --replace "[pytest]" "[tool:pytest]"
+  '';
+
   meta = {
     description = "Python attributes without boilerplate";
     homepage = https://characteristic.readthedocs.org;