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/yalexs/default.nix

@@ -0,0 +1,65 @@
+{ lib
+, aiofiles
+, aiohttp
+, aioresponses
+, aiounittest
+, asynctest
+, buildPythonPackage
+, fetchFromGitHub
+, pubnub
+, pyjwt
+, pytestCheckHook
+, python-dateutil
+, pythonOlder
+, requests
+, requests-mock
+}:
+
+buildPythonPackage rec {
+  pname = "yalexs";
+  version = "1.1.25";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "bdraco";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-O7M9Shh8jp2fTaVQPM8mgh1pkv75wn22PFpxJVenbAo=";
+  };
+
+  propagatedBuildInputs = [
+    aiofiles
+    aiohttp
+    pubnub
+    pyjwt
+    python-dateutil
+    requests
+  ];
+
+  checkInputs = [
+    aioresponses
+    aiounittest
+    asynctest
+    pytestCheckHook
+    requests-mock
+  ];
+
+  postPatch = ''
+    # Not used requirement
+    substituteInPlace setup.py \
+      --replace '"vol",' ""
+  '';
+
+  pythonImportsCheck = [
+    "yalexs"
+  ];
+
+  meta = with lib; {
+    description = "Python API for Yale Access (formerly August) Smart Lock and Doorbell";
+    homepage = "https://github.com/bdraco/yalexs";
+    license = with licenses; [ mit ];
+    maintainers = with maintainers; [ fab ];
+  };
+}