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/qreactor/default.nix

@@ -0,0 +1,41 @@
+{ lib
+, buildPythonPackage
+, pythonOlder
+, fetchFromGitHub
+, twisted
+, qtpy
+, pyqt5
+}:
+
+buildPythonPackage rec {
+  pname = "qreactor-unstable";
+  version = "2018-09-29";
+
+  src = fetchFromGitHub {
+    owner = "frmdstryr";
+    repo = "qt-reactor";
+    rev = "364b3f561fb0d4d3938404d869baa4db7a982bf0";
+    sha256 = "1nb5iwg0nfz86shw28a2kj5pyhd4jvvxhf73fhnfbl8scgnvjv9h";
+  };
+
+  disabled = pythonOlder "3.0";
+
+  propagatedBuildInputs = [
+    twisted qtpy
+  ];
+
+  checkInputs = [
+    pyqt5
+  ];
+
+  pythonImportsCheck = [
+    "qreactor"
+  ];
+
+  meta = with lib; {
+    homepage = "https://github.com/frmdstryr/qt-reactor";
+    description = "Twisted and PyQt5/qtpy eventloop integration base";
+    license = licenses.mit;
+    maintainers = with maintainers; [ raboof ];
+  };
+}