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/token-bucket/default.nix

@@ -0,0 +1,34 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pytest-runner
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "token-bucket";
+  version = "0.3.0";
+  format = "setuptools";
+
+  src = fetchFromGitHub {
+    owner = "falconry";
+    repo = pname;
+    rev = version;
+    sha256 = "0a703y2d09kvv2l9vq7vc97l4pi2wwq1f2hq783mbw2238jymb3m";
+  };
+
+  nativeBuildInputs = [
+    pytest-runner
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  meta = with lib; {
+    description = "Token Bucket Implementation for Python Web Apps";
+    homepage = "https://github.com/falconry/token-bucket";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ hexa ];
+  };
+}