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/applications/misc/hovercraft/default.nix

@@ -0,0 +1,35 @@
+{ lib
+, buildPythonApplication
+, isPy3k
+, fetchFromGitHub
+, manuel
+, setuptools
+, docutils
+, lxml
+, svg-path
+, pygments
+, watchdog
+}:
+
+buildPythonApplication rec {
+  pname = "hovercraft";
+  version = "2.7";
+  disabled = ! isPy3k;
+
+  src = fetchFromGitHub {
+    owner = "regebro";
+    repo = "hovercraft";
+    rev = version;
+    sha256 = "0k0gjlqjz424rymcfdjpj6a71ppblfls5f8y2hd800d1as4im8az";
+  };
+
+  checkInputs = [ manuel ];
+  propagatedBuildInputs = [ setuptools docutils lxml svg-path pygments watchdog ];
+
+  meta = with lib; {
+    description = "Makes impress.js presentations from reStructuredText";
+    homepage = "https://github.com/regebro/hovercraft";
+    license = licenses.mit;
+    maintainers = with maintainers; [ goibhniu makefu ];
+  };
+}