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/vallox-websocket-api/default.nix

@@ -0,0 +1,42 @@
+{ lib
+, buildPythonPackage
+, pythonOlder
+, fetchFromGitHub
+, construct
+, websockets
+, asynctest
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "vallox-websocket-api";
+  version = "2.11.0";
+
+  disabled = pythonOlder "3.6";
+
+  format = "setuptools";
+
+  src = fetchFromGitHub {
+    owner = "yozik04";
+    repo = "vallox_websocket_api";
+    rev = version;
+    hash = "sha256-wZiPrPl9ESp43PFdRPvqB2nOg+ogfaArunZOR3Q9cvs=";
+  };
+
+  propagatedBuildInputs = [
+    construct
+    websockets
+  ];
+
+  checkInputs = [
+    asynctest
+    pytestCheckHook
+  ];
+
+  meta = {
+    description = "Async API for Vallox ventilation units";
+    homepage = "https://github.com/yozik04/vallox_websocket_api";
+    license = lib.licenses.lgpl3Only;
+    maintainers = with lib.maintainers; [ dotlambda ];
+  };
+}