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/server.nix

@@ -0,0 +1,34 @@
+{ buildDunePackage, dns, dns-mirage, randomconv, duration, lwt
+, mirage-time, mirage-clock, mirage-stack, metrics
+, alcotest, mirage-crypto-rng, dns-tsig, base64
+}:
+
+buildDunePackage {
+  pname = "dns-server";
+
+  inherit (dns) version src useDune2 minimumOCamlVersion;
+
+  propagatedBuildInputs = [
+    dns
+    dns-mirage
+    randomconv
+    duration
+    lwt
+    mirage-time
+    mirage-clock
+    mirage-stack
+    metrics
+  ];
+
+  doCheck = true;
+  checkInputs = [
+    alcotest
+    mirage-crypto-rng
+    dns-tsig
+    base64
+  ];
+
+  meta = dns.meta // {
+    description = "DNS server, primary and secondary";
+  };
+}