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/rx/default.nix

@@ -0,0 +1,29 @@
+{ lib, fetchFromGitHub, buildPythonPackage, pythonOlder, nose }:
+
+buildPythonPackage rec {
+  pname = "rx";
+  version = "3.2.0";
+  disabled = pythonOlder "3.6";
+
+  # There are no tests on the pypi source
+  src = fetchFromGitHub {
+    owner = "ReactiveX";
+    repo = "rxpy";
+    rev = "v${version}";
+    sha256 = "159ln0c721rrdz0mqyl3zvv6qsry7ql7ddlpwpnxs9q15ik15mnj";
+  };
+
+  checkInputs = [ nose ];
+
+  # Some tests are nondeterministic. (`grep sleep -r tests`)
+  # test_timeout_schedule_action_cancel: https://hydra.nixos.org/build/74954646
+  # test_new_thread_scheduler_timeout: https://hydra.nixos.org/build/74949851
+  doCheck = false;
+
+  meta = {
+    homepage = "https://github.com/ReactiveX/RxPY";
+    description = "Reactive Extensions for Python";
+    maintainers = with lib.maintainers; [ thanegill ];
+    license = lib.licenses.asl20;
+  };
+}