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/piaf/default.nix

@@ -0,0 +1,54 @@
+{ alcotest-lwt
+, buildDunePackage
+, dune-site
+, fetchzip
+, gluten-lwt-unix
+, lib
+, logs
+, lwt_ssl
+, magic-mime
+, mrmime
+, openssl
+, pecu
+, psq
+, ssl
+, uri
+}:
+
+buildDunePackage rec {
+  pname = "piaf";
+  version = "0.1.0";
+
+  src = fetchzip {
+    url = "https://github.com/anmonteiro/piaf/releases/download/${version}/piaf-${version}.tbz";
+    sha256 = "0d431kz3bkwlgdamvsv94mzd9631ppcjpv516ii91glzlfdzh5hz";
+  };
+
+  postPatch = ''
+    substituteInPlace ./vendor/dune --replace "mrmime.prettym" "prettym"
+  '';
+
+  useDune2 = true;
+
+  propagatedBuildInputs = [
+    logs
+    magic-mime
+    mrmime
+    psq
+    uri
+    gluten-lwt-unix
+  ];
+
+  checkInputs = [
+    alcotest-lwt
+    dune-site
+  ];
+  doCheck = true;
+
+  meta = {
+    description = "An HTTP library with HTTP/2 support written entirely in OCaml";
+    homepage = "https://github.com/anmonteiro/piaf";
+    license = lib.licenses.bsd3;
+    maintainers = with lib.maintainers; [ anmonteiro ];
+  };
+}