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/arrow/default.nix

@@ -0,0 +1,52 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pythonOlder
+, python-dateutil
+, typing-extensions
+, pytestCheckHook
+, pytest-mock
+, pytz
+, simplejson
+}:
+
+buildPythonPackage rec {
+  pname = "arrow";
+  version = "1.2.2";
+
+  disabled = pythonOlder "3.6";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-Bcrx/T2aEaETWytvCYh0IRU7lFWOXvTQkLVntHFzrCs=";
+  };
+
+  postPatch = ''
+    # no coverage reports
+    sed -i "/addopts/d" tox.ini
+  '';
+
+  propagatedBuildInputs = [ python-dateutil ]
+    ++ lib.optionals (pythonOlder "3.8") [ typing-extensions ];
+
+  checkInputs = [
+    pytestCheckHook
+    pytest-mock
+    pytz
+    simplejson
+  ];
+
+  # ParserError: Could not parse timezone expression "America/Nuuk"
+  disabledTests = [
+    "test_parse_tz_name_zzz"
+  ];
+
+  pythonImportsCheck = [ "arrow" ];
+
+  meta = with lib; {
+    description = "Python library for date manipulation";
+    homepage = "https://github.com/crsmithdev/arrow";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ thoughtpolice ];
+  };
+}