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/notedown/default.nix

@@ -0,0 +1,37 @@
+{ buildPythonPackage
+, fetchPypi
+, lib
+, nbconvert
+, nbformat
+, notebook
+, pandoc-attributes
+, six
+}:
+
+buildPythonPackage rec {
+  pname = "notedown";
+  version = "1.5.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "36e033ebbbe5aca0fab031ffaf3611d5bc5c50237df68ff81bb95f8be353a1ee";
+  };
+
+  propagatedBuildInputs = [
+    notebook
+    nbconvert
+    nbformat
+    pandoc-attributes
+    six
+  ];
+
+  # No tests in pypi source
+  doCheck = false;
+
+  meta = {
+    homepage = "https://github.com/aaren/notedown";
+    description = "Convert IPython Notebooks to markdown (and back)";
+    license = lib.licenses.bsd2;
+    maintainers = with lib.maintainers; [ vcanadi ];
+  };
+}