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/alcotest/lwt.nix

@@ -0,0 +1,19 @@
+{ lib, buildDunePackage, alcotest, logs, ocaml_lwt, fmt
+, re, cmdliner
+}:
+
+buildDunePackage {
+  pname = "alcotest-lwt";
+
+  inherit (alcotest) version src useDune2;
+
+  propagatedBuildInputs = [ alcotest logs ocaml_lwt fmt ];
+
+  doCheck = true;
+  checkInputs = [ re cmdliner ];
+
+  meta = alcotest.meta // {
+    description = "Lwt-based helpers for Alcotest";
+  };
+
+}