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/mdx/default.nix

@@ -0,0 +1,41 @@
+{ lib, fetchurl, buildDunePackage, ocaml
+, alcotest
+, astring, cmdliner, cppo, fmt, logs, ocaml-version, odoc-parser, ocaml_lwt, re, result, csexp
+, pandoc}:
+
+buildDunePackage rec {
+  pname = "mdx";
+  version = "2.1.0";
+  useDune2 = true;
+
+  minimalOCamlVersion = "4.08";
+
+  src = fetchurl {
+    url = "https://github.com/realworldocaml/mdx/releases/download/${version}/mdx-${version}.tbz";
+    sha256 = "sha256-ol1zy8LODDYdcnv/jByE0pnqJ5ujQuMALq3v9y7td/o=";
+  };
+
+  nativeBuildInputs = [ cppo ];
+  buildInputs = [ cmdliner ];
+  propagatedBuildInputs = [ astring fmt logs result csexp ocaml-version odoc-parser re ];
+  checkInputs = [ alcotest ocaml_lwt pandoc ];
+
+  doCheck = true;
+
+  outputs = [ "bin" "lib" "out" ];
+
+  installPhase = ''
+    runHook preInstall
+    dune install --prefix=$bin --libdir=$lib/lib/ocaml/${ocaml.version}/site-lib ${pname}
+    runHook postInstall
+  '';
+
+  meta = {
+    description = "Executable OCaml code blocks inside markdown files";
+    homepage = "https://github.com/realworldocaml/mdx";
+    changelog = "https://github.com/realworldocaml/mdx/raw/${version}/CHANGES.md";
+    license = lib.licenses.isc;
+    maintainers = [ lib.maintainers.romildo ];
+    mainProgram = "ocaml-mdx";
+  };
+}