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/openant/default.nix

@@ -0,0 +1,38 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pyusb
+}:
+
+buildPythonPackage {
+  pname = "openant-unstable";
+  version = "2017-02-11";
+
+  src = fetchFromGitHub {
+    owner = "Tigge";
+    repo = "openant";
+    rev = "ed89281e37f65d768641e87356cef38877952397";
+    sha256 = "1g81l9arqdy09ijswn3sp4d6i3z18d44lzyb78bwnvdb14q22k19";
+  };
+
+  # Removes some setup.py hacks intended to install udev rules.
+  # We do the job ourselves in postInstall below.
+  postPatch = ''
+    sed -i -e '/cmdclass=.*/d' setup.py
+  '';
+
+  postInstall = ''
+    install -dm755 "$out/etc/udev/rules.d"
+    install -m644 resources/ant-usb-sticks.rules "$out/etc/udev/rules.d/99-ant-usb-sticks.rules"
+  '';
+
+  propagatedBuildInputs = [ pyusb ];
+
+  meta = with lib; {
+    homepage = "https://github.com/Tigge/openant";
+    description = "ANT and ANT-FS Python Library";
+    license = licenses.mit;
+    platforms = platforms.unix;
+  };
+
+}