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/unstrctrd/default.nix

@@ -0,0 +1,48 @@
+{ alcotest
+, angstrom
+, bigstringaf
+, buildDunePackage
+, crowbar
+, fetchzip
+, fmt
+, hxd
+, ke
+, lib
+, rresult
+, uutf
+}:
+
+buildDunePackage rec {
+  pname = "unstrctrd";
+  version = "0.3";
+
+  src = fetchzip {
+    url = "https://github.com/dinosaure/unstrctrd/releases/download/v${version}/unstrctrd-v${version}.tbz";
+    sha256 = "0mjm4v7kk75iwwsfnpmxc3bsl8aisz53y7z21sykdp60f4rxnah7";
+  };
+
+  useDune2 = true;
+
+  propagatedBuildInputs = [
+    angstrom
+    uutf
+  ];
+
+  checkInputs = [
+    alcotest
+    bigstringaf
+    crowbar
+    fmt
+    hxd
+    ke
+    rresult
+  ];
+  doCheck = true;
+
+  meta = {
+    description = "A library for parsing email headers";
+    homepage = "https://github.com/dinosaure/unstrctrd";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ ];
+  };
+}