uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

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

@@ -0,0 +1,31 @@
+{ lib
+, fetchPypi
+, buildPythonPackage
+, pythonOlder
+, typing-extensions
+}:
+
+buildPythonPackage rec {
+  pname = "async-timeout";
+  version = "4.0.2";
+
+  disabled = pythonOlder "3.6";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "2163e1640ddb52b7a8c80d0a67a08587e5d245cc9c553a74a847056bc2976b15";
+  };
+
+  propagatedBuildInputs = [
+    typing-extensions
+  ];
+
+  # Circular dependency on aiohttp
+  doCheck = false;
+
+  meta = {
+    description = "Timeout context manager for asyncio programs";
+    homepage = "https://github.com/aio-libs/async_timeout/";
+    license = lib.licenses.asl20;
+  };
+}