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-unix.nix

@@ -0,0 +1,28 @@
+{ lib, buildDunePackage, cohttp-lwt
+, conduit-lwt-unix, conduit-lwt, ppx_sexp_conv
+, cmdliner, fmt, logs, magic-mime
+, ounit
+, cacert
+}:
+
+buildDunePackage {
+  pname = "cohttp-lwt-unix";
+  inherit (cohttp-lwt) version src;
+
+  useDune2 = true;
+
+  buildInputs = [ cmdliner ppx_sexp_conv ];
+
+  propagatedBuildInputs = [
+    cohttp-lwt conduit-lwt conduit-lwt-unix fmt logs magic-mime
+  ];
+
+  # TODO(@sternenseemann): fail for unknown reason
+  # https://github.com/mirage/ocaml-cohttp/issues/675#issuecomment-830692742
+  doCheck = false;
+  checkInputs = [ ounit cacert ];
+
+  meta = cohttp-lwt.meta // {
+    description = "CoHTTP implementation for Unix and Windows using Lwt";
+  };
+}