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/wasm/default.nix

@@ -0,0 +1,41 @@
+{ stdenv, lib, fetchFromGitHub, ocaml, findlib, ocamlbuild }:
+
+if lib.versionOlder ocaml.version "4.03"
+|| lib.versionOlder "4.13" ocaml.version
+then throw "wasm is not available for OCaml ${ocaml.version}"
+else
+
+stdenv.mkDerivation rec {
+  pname = "ocaml${ocaml.version}-wasm";
+  version = "1.1.1";
+
+  src = fetchFromGitHub {
+    owner = "WebAssembly";
+    repo = "spec";
+    rev = "opam-${version}";
+    sha256 = "1kp72yv4k176i94np0m09g10cviqp2pnpm7jmiq6ik7fmmbknk7c";
+  };
+
+  nativeBuildInputs = [ ocaml findlib ocamlbuild ];
+  strictDeps = true;
+
+  # x86_64-unknown-linux-musl-ld: -r and -pie may not be used together
+  hardeningDisable = lib.optional stdenv.hostPlatform.isStatic "pie";
+
+  makeFlags = [ "-C" "interpreter" ];
+
+  createFindlibDestdir = true;
+
+  postInstall = ''
+    mkdir $out/bin
+    cp -L interpreter/wasm $out/bin
+  '';
+
+  meta = {
+    description = "An executable and OCaml library to run, read and write Web Assembly (wasm) files and manipulate their AST";
+    license = lib.licenses.asl20;
+    maintainers = [ lib.maintainers.vbgl ];
+    homepage = "https://github.com/WebAssembly/spec/tree/master/interpreter";
+    inherit (ocaml.meta) platforms;
+  };
+}