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/ocaml-modules/kafka/lwt.nix

@@ -0,0 +1,19 @@
+{ buildDunePackage
+, kafka
+, lwt
+, cmdliner
+}:
+
+buildDunePackage rec {
+  pname = "kafka_lwt";
+
+  inherit (kafka) version useDune2 src;
+
+  buildInputs = [ cmdliner ];
+
+  propagatedBuildInputs = [ kafka lwt ];
+
+  meta = kafka.meta // {
+    description = "OCaml bindings for Kafka, Lwt bindings";
+  };
+}