From a263ab4e5c321fab27847f74e7adbc93f1796f08 Mon Sep 17 00:00:00 2001
From: Frederik Rietdijk <fridh@fridh.nl>
Date: Sun, 21 Oct 2018 09:30:05 +0200
Subject: [PATCH] python.pkgs.pycodestyle: fix building with python37

---
 .../development/python-modules/pycodestyle/default.nix | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/python-modules/pycodestyle/default.nix b/pkgs/development/python-modules/pycodestyle/default.nix
index 69b8e2bc0d1..43a8e6f9f45 100644
--- a/pkgs/development/python-modules/pycodestyle/default.nix
+++ b/pkgs/development/python-modules/pycodestyle/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchPypi }:
+{ lib, buildPythonPackage, fetchPypi, fetchpatch }:
 
 buildPythonPackage rec {
   pname = "pycodestyle";
@@ -9,6 +9,14 @@ buildPythonPackage rec {
     sha256 = "cbfca99bd594a10f674d0cd97a3d802a1fdef635d4361e1a2658de47ed261e3a";
   };
 
+  patches = [
+    # https://github.com/PyCQA/pycodestyle/pull/801
+    (fetchpatch {
+      url = https://github.com/PyCQA/pycodestyle/commit/397463014fda3cdefe8d6c9d117ae16d878dc494.patch;
+      sha256 = "01zask2y2gim5il9lcmlhr2qaadv9v7kaw1y619l8xbjhpbq2zh8";
+    })
+  ];
+
   meta = with lib; {
     description = "Python style guide checker (formerly called pep8)";
     homepage = https://pycodestyle.readthedocs.io;