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/marshmallow-enum/default.nix

@@ -0,0 +1,42 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, marshmallow
+, pytestCheckHook
+, isPy27
+, enum34
+, pytest-flake8
+}:
+
+buildPythonPackage rec {
+  pname = "marshmallow-enum";
+  version = "1.5.1";
+
+  src = fetchFromGitHub {
+    owner = "justanr";
+    repo = "marshmallow_enum";
+    rev = "v${version}";
+    sha256 = "1ihrcmyfjabivg6hc44i59hnw5ijlg1byv3zs1rqxfynp8xr7398";
+  };
+
+  propagatedBuildInputs = [
+    marshmallow
+  ] ++ lib.optionals isPy27 [ enum34 ];
+
+  checkInputs = [
+    pytestCheckHook
+    pytest-flake8
+  ];
+
+  disabledTests = [
+    "test_custom_error_in_deserialize_by_name"
+    "test_custom_error_in_deserialize_by_value"
+  ];
+
+  meta = with lib; {
+    description = "Enum field for Marshmallow";
+    homepage = "https://github.com/justanr/marshmallow_enum";
+    license = licenses.mit;
+    maintainers = [ maintainers.costrouc ];
+  };
+}