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/dns/client.nix

@@ -0,0 +1,21 @@
+{ lib, buildDunePackage, dns, ocaml_lwt, mirage-clock, mirage-time
+, mirage-random, mirage-stack, mirage-crypto-rng, mtime, randomconv
+, cstruct, fmt, logs, rresult, domain-name, ipaddr, alcotest }:
+
+buildDunePackage {
+  pname = "dns-client";
+  inherit (dns) src version;
+
+  useDune2 = true;
+
+  propagatedBuildInputs = [ cstruct fmt logs dns rresult randomconv domain-name ipaddr
+                            ocaml_lwt mirage-stack mirage-random mirage-time mirage-clock
+                            mtime mirage-crypto-rng ];
+  checkInputs = [ alcotest ];
+  doCheck = true;
+
+  meta = dns.meta // {
+    description = "Pure DNS resolver API";
+    mainProgram = "dns-client.unix";
+  };
+}