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/cohttp/lwt.nix

@@ -0,0 +1,21 @@
+{ lib, buildDunePackage, cohttp, ocaml_lwt, uri, ppx_sexp_conv, logs, sexplib0 }:
+
+buildDunePackage {
+  pname = "cohttp-lwt";
+  inherit (cohttp)
+    version
+    src
+    useDune2
+    minimumOCamlVersion
+    ;
+
+  buildInputs = [ ppx_sexp_conv ];
+
+  propagatedBuildInputs = [
+    cohttp ocaml_lwt logs sexplib0 uri
+  ];
+
+  meta = cohttp.meta // {
+    description = "CoHTTP implementation using the Lwt concurrency library";
+  };
+}