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/pyxl3/default.nix

@@ -0,0 +1,35 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, unittest2
+, python
+, isPy27
+}:
+
+buildPythonPackage rec {
+  pname = "pyxl3";
+  version = "1.4";
+  disabled = isPy27;
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "ad4cc56bf4b35def33783e6d4783882702111fe8f9a781c63228e2114067c065";
+  };
+
+  checkInputs = [ unittest2 ];
+
+  checkPhase = ''
+     ${python.interpreter} tests/test_basic.py
+  '';
+
+  # tests require weird codec installation
+  # which is not necessary for major use of package
+  doCheck = false;
+
+  meta = with lib; {
+    description = "Python 3 port of pyxl for writing structured and reusable inline HTML";
+    homepage = "https://github.com/gvanrossum/pyxl3";
+    license = licenses.asl20;
+    maintainers = [ maintainers.costrouc ];
+  };
+}