python3.pkgs.w3lib: fix build with python 3.9 and 3.10 (NixOS#375511)

Author: flokli

pkgs/development/python-modules/w3lib/default.nix

@@ -1,6 +1,7 @@
 {
   lib,
   buildPythonPackage,
+  fetchpatch,
   fetchPypi,
   pytestCheckHook,
   pythonOlder,
@@ -19,6 +20,13 @@ buildPythonPackage rec {
     hash = "sha256-dW/y2Uxk5ByNfAxZ/qEqXQvFXjOlMceYi0oWPeubB90=";
   };
 
+  patches = [
+    (fetchpatch {
+      url = "https://github.com/scrapy/w3lib/commit/44dcf9160c3f207658d6ce808307c80c9ca835a2.patch";
+      hash = "sha256-fUQ2oWpAJeslgemt+EUxKLH3Ywpg441FCOBLFJCZ+Ac=";
+    })
+  ];
+
   build-system = [ setuptools ];
 
   nativeCheckInputs = [ pytestCheckHook ];