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/filelock/default.nix

@@ -0,0 +1,34 @@
+{ lib
+, buildPythonPackage
+, pythonOlder
+, fetchPypi
+, setuptools-scm
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "filelock";
+  version = "3.6.0";
+  format = "pyproject";
+  disabled = pythonOlder "3.6";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-nNVAqTUuQyxyRqSP5OhxKxCssd8q0fMOjAcLgq4f7YU=";
+  };
+
+  nativeBuildInputs = [
+    setuptools-scm
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  meta = with lib; {
+    homepage = "https://github.com/benediktschmitt/py-filelock";
+    description = "A platform independent file lock for Python";
+    license = licenses.unlicense;
+    maintainers = with maintainers; [ hyphon81 ];
+  };
+}