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/py-vapid/default.nix

@@ -0,0 +1,24 @@
+{ lib, buildPythonPackage, fetchPypi
+, flake8, mock, nose, pytest
+, cryptography
+}:
+
+buildPythonPackage rec {
+  pname = "py-vapid";
+  version = "1.8.2";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "874f21910f2103c56228cded941d6e733dd8f1eb12876137919533bfacb65a48";
+  };
+
+  propagatedBuildInputs = [ cryptography ];
+
+  checkInputs = [ flake8 mock nose pytest ];
+
+  meta = with lib; {
+    description = "VAPID is a voluntary standard for WebPush subscription providers";
+    homepage = "https://github.com/mozilla-services/vapid";
+    license = licenses.mpl20;
+  };
+}