From b169bfc9e2c981a46680c53343258d90be6f6d9f Mon Sep 17 00:00:00 2001
From: Edmund Wu <fangkazuto@gmail.com>
Date: Mon, 22 Jun 2020 20:45:34 -0400
Subject: [PATCH] python3Packages.tinycss2: fix build

---
 pkgs/development/python-modules/tinycss2/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/development/python-modules/tinycss2/default.nix b/pkgs/development/python-modules/tinycss2/default.nix
index 6f4eb927f3a..35c0f76b084 100644
--- a/pkgs/development/python-modules/tinycss2/default.nix
+++ b/pkgs/development/python-modules/tinycss2/default.nix
@@ -36,6 +36,11 @@ buildPythonPackage rec {
 
   checkInputs = [ pytest pytestrunner pytestcov pytest-flake8 pytest-isort ];
 
+  # https://github.com/PyCQA/pycodestyle/issues/598
+  preCheck = ''
+    printf "[flake8]\nignore=W504,E741,E126" >> setup.cfg
+  '';
+
   meta = with lib; {
     description = "Low-level CSS parser for Python";
     homepage = "https://github.com/Kozea/tinycss2";