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/pdfkit/default.nix

@@ -0,0 +1,24 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+}:
+
+buildPythonPackage rec {
+  pname = "pdfkit";
+  version = "1.0.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "992f821e1e18fc8a0e701ecae24b51a2d598296a180caee0a24c0af181da02a9";
+  };
+
+  # tests are not distributed
+  doCheck = false;
+
+  meta = with lib; {
+    homepage = "https://pypi.python.org/pypi/pdfkit";
+    description = "Wkhtmltopdf python wrapper to convert html to pdf using the webkit rendering engine and qt";
+    license = licenses.mit;
+  };
+
+}