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/ratelim/default.nix

@@ -0,0 +1,31 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, decorator
+}:
+
+buildPythonPackage rec {
+  pname = "ratelim";
+  version = "0.1.6";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "07dirdd8y23706110nb0lfz5pzbrcvd9y74h64la3y8igqbk4vc2";
+  };
+
+  propagatedBuildInputs = [
+    decorator
+  ];
+
+  pythonImportsCheck = [ "ratelim" ];
+
+  # package has no tests
+  doCheck = false;
+
+  meta = with lib; {
+    homepage = "https://github.com/themiurgo/ratelim";
+    description = "Simple Python library that limits the number of times a function can be called during a time interval";
+    license = licenses.mit;
+    maintainers = with maintainers; [ dgliwka ];
+  };
+}