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/click-option-group/default.nix

@@ -0,0 +1,47 @@
+{ lib
+, buildPythonPackage
+, pythonOlder
+, fetchFromGitHub
+, click
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "click-option-group";
+  version = "0.5.3";
+  format = "setuptools";
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "click-contrib";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "1w0692s8fabncpggpwl2d4dfqjjlmcia271rrb8hcz0r6nvw98ak";
+  };
+
+  propagatedBuildInputs = [
+    click
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [
+    "click_option_group"
+  ];
+
+  meta = with lib; {
+    description = "Option groups missing in Click";
+    longDescription = ''
+      Option groups are convenient mechanism for logical structuring
+      CLI, also it allows you to set the specific behavior and set the
+      relationship among grouped options (mutually exclusive options
+      for example). Moreover, argparse stdlib package contains this
+      functionality out of the box.
+    '';
+    homepage = "https://github.com/click-contrib/click-option-group";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ hexa ];
+  };
+}