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/ulex/default.nix

@@ -0,0 +1,42 @@
+{ stdenv, lib, fetchFromGitHub, ocaml, findlib, ocamlbuild, camlp4 }:
+
+let
+  pname = "ulex";
+  param =
+    if lib.versionAtLeast ocaml.version "4.02" then {
+      version = "1.2";
+      sha256 = "08yf2x9a52l2y4savjqfjd2xy4pjd1rpla2ylrr9qrz1drpfw4ic";
+    } else {
+      version = "1.1";
+      sha256 = "0cmscxcmcxhlshh4jd0lzw5ffzns12x3bj7h27smbc8waxkwffhl";
+    };
+in
+
+stdenv.mkDerivation rec {
+  name = "ocaml${ocaml.version}-${pname}-${version}";
+  inherit (param) version;
+
+  src = fetchFromGitHub {
+    owner = "whitequark";
+    repo = pname;
+    rev = "v${version}";
+    inherit (param) sha256;
+  };
+
+  createFindlibDestdir = true;
+
+  nativeBuildInputs = [ ocaml findlib ocamlbuild camlp4 ];
+  propagatedBuildInputs = [ camlp4 ];
+
+  strictDeps = true;
+
+  buildFlags = [ "all" "all.opt" ];
+
+  meta = {
+    inherit (src.meta) homepage;
+    description = "A lexer generator for Unicode and OCaml";
+    license = lib.licenses.mit;
+    inherit (ocaml.meta) platforms;
+    maintainers = [ lib.maintainers.roconnor ];
+  };
+}