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/pyxb/default.nix

@@ -0,0 +1,30 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+}:
+
+buildPythonPackage rec {
+  pname = "PyXB";
+  version = "1.2.6";
+  format = "setuptools";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1d17pyixbfvjyi2lb0cfp0ch8wwdf44mmg3r5pwqhyyqs66z601a";
+  };
+
+  pythonImportsCheck = [
+    "pyxb"
+  ];
+
+  # tests don't complete
+  # https://github.com/pabigot/pyxb/issues/130
+  doCheck = false;
+
+  meta = with lib; {
+    description = "Python XML Schema Bindings";
+    homepage = "https://github.com/pabigot/pyxb";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ hexa ];
+  };
+}