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/erm_xmpp/default.nix

@@ -0,0 +1,47 @@
+{ stdenv, lib, fetchFromGitHub, ocaml, findlib, camlp4, ocamlbuild
+, erm_xml, mirage-crypto, mirage-crypto-rng, base64
+}:
+
+stdenv.mkDerivation rec {
+  version = "0.3+20200317";
+  pname = "ocaml${ocaml.version}-erm_xmpp";
+
+  src = fetchFromGitHub {
+    owner  = "hannesm";
+    repo   = "xmpp";
+    rev    = "7fa5bea252671fd88625c6af109998b879ca564f";
+    sha256 = "0spzyd9kbyizzwl8y3mq8z19zlkzxnkh2fppry4lyc7vaw7bqrwq";
+  };
+
+  nativeBuildInputs = [ ocaml findlib ocamlbuild camlp4 ];
+  buildInputs = [ camlp4 ];
+  propagatedBuildInputs = [ erm_xml mirage-crypto mirage-crypto-rng base64 ];
+
+  strictDeps = true;
+
+  configurePhase = ''
+    runHook preConfigure
+    ocaml setup.ml -configure --prefix $out
+    runHook postConfigure
+  '';
+  buildPhase = ''
+    runHook preBuild
+    ocaml setup.ml -build
+    runHook postBuild
+  '';
+  installPhase = ''
+    runHook preInstall
+    ocaml setup.ml -install
+    runHook postInstall
+  '';
+
+  createFindlibDestdir = true;
+
+  meta = {
+    homepage = "https://github.com/hannesm/xmpp";
+    description = "OCaml based XMPP implementation (fork)";
+    license = lib.licenses.bsd3;
+    maintainers = with lib.maintainers; [ sternenseemann ];
+    inherit (ocaml.meta) platforms;
+  };
+}