python3Packages.aiopvapi: patch support for async_timeout>4

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

@@ -28,7 +28,16 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  pythonImportsCheck = [ "aiopvapi" ];
+  postPatch = ''
+    # async_timeout 4.0.0 removes loop, https://github.com/sander76/aio-powerview-api/pull/13
+    # Patch doesn't apply due to different line endings
+    substituteInPlace aiopvapi/helpers/aiorequest.py \
+      --replace ", loop=self.loop)" ")"
+  '';
+
+  pythonImportsCheck = [
+    "aiopvapi"
+  ];
 
   meta = with lib; {
     description = "Python API for the PowerView API";