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/stm32loader/default.nix

@@ -0,0 +1,35 @@
+{ lib
+, buildPythonPackage
+, isPy27
+, fetchPypi
+, progress
+, pyserial
+, pytest
+, mock
+}:
+
+buildPythonPackage rec {
+  pname = "stm32loader";
+  version = "0.5.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "0135qzxlrivvkq6wgkw7shfz94n755qs2c1754p1hc2jk0nqayrg";
+  };
+
+  propagatedBuildInputs = [ progress pyserial ];
+
+  checkInputs = [ pytest ] ++ lib.optional isPy27 mock;
+
+  checkPhase = ''
+    pytest --strict tests/unit
+  '';
+
+  meta = with lib; {
+    description = "Flash firmware to STM32 microcontrollers in Python";
+    homepage = "https://github.com/florisla/stm32loader";
+    changelog = "https://github.com/florisla/stm32loader/blob/v${version}/CHANGELOG.md";
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ emily ];
+  };
+}