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/isodate/default.nix

@@ -0,0 +1,29 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, python
+, six
+}:
+
+buildPythonPackage rec {
+  pname = "isodate";
+  version = "0.6.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "SMWIHefosKDWSMsCTIBi3ITnuEDtgehkx2FP08Envek=";
+  };
+
+  propagatedBuildInputs = [ six ];
+
+  checkPhase = ''
+    ${python.interpreter} -m unittest discover -s src/isodate/tests
+  '';
+
+  meta = with lib; {
+    description = "ISO 8601 date/time parser";
+    homepage = "http://cheeseshop.python.org/pypi/isodate";
+    license = licenses.bsd0;
+  };
+
+}