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/twt/default.nix

@@ -0,0 +1,37 @@
+{ lib, stdenv, fetchFromGitHub, ocaml, findlib }:
+
+stdenv.mkDerivation rec {
+  pname = "ocaml${ocaml.version}-twt";
+  version = "0.94.0";
+
+  src = fetchFromGitHub {
+    owner = "mlin";
+    repo = "twt";
+    rev = "v${version}";
+    sha256 = "sha256-xbjLPd7P1KyuC3i6WHLBcdLwd14atcBsd5ER+l97KAk=";
+  };
+
+  nativeBuildInputs = [ ocaml findlib ];
+
+  strictDeps = true;
+
+  preInstall = ''
+    mkdir -p $out/bin
+    mkdir -p $OCAMLFIND_DESTDIR
+  '';
+
+  dontBuild = true;
+
+  installFlags = [ "PREFIX=$(out)" ];
+
+  dontStrip = true;
+
+  meta = with lib; {
+    description = "“The Whitespace Thing” for OCaml";
+    homepage = "http://people.csail.mit.edu/mikelin/ocaml+twt/";
+    license = licenses.mit;
+    maintainers = [ maintainers.vbgl ];
+    mainProgram = "ocaml+twt";
+    inherit (ocaml.meta) platforms;
+  };
+}