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/vg/default.nix

@@ -0,0 +1,65 @@
+{ stdenv, lib, fetchurl, ocaml, findlib, ocamlbuild, topkg
+, uchar, result, gg, uutf, otfm
+, js_of_ocaml, js_of_ocaml-ppx,
+  pdfBackend ? true, # depends on uutf and otfm
+  htmlcBackend ? true # depends on js_of_ocaml
+}:
+
+with lib;
+
+let
+  inherit (lib) optionals versionOlder;
+
+  pname = "vg";
+  version = "0.9.4";
+  webpage = "https://erratique.ch/software/${pname}";
+in
+
+if versionOlder ocaml.version "4.03"
+then throw "vg is not available for OCaml ${ocaml.version}"
+else
+
+stdenv.mkDerivation {
+
+  name = "ocaml${ocaml.version}-${pname}-${version}";
+
+  src = fetchurl {
+    url = "${webpage}/releases/${pname}-${version}.tbz";
+    sha256 = "181sz6l5xrj5jvwg4m2yqsjzwp2s5h8v0mwhjcwbam90kdfx2nak";
+  };
+
+  nativeBuildInputs = [ ocaml findlib ocamlbuild ];
+  buildInputs = [ topkg ];
+
+  propagatedBuildInputs = [ uchar result gg ]
+                          ++ optionals pdfBackend [ uutf otfm ]
+                          ++ optionals htmlcBackend [ js_of_ocaml js_of_ocaml-ppx ];
+
+  strictDeps = true;
+
+  buildPhase = topkg.buildPhase
+    + " --with-uutf ${boolToString pdfBackend}"
+    + " --with-otfm ${boolToString pdfBackend}"
+    + " --with-js_of_ocaml ${boolToString htmlcBackend}"
+    + " --with-cairo2 false";
+
+  inherit (topkg) installPhase;
+
+  meta = {
+    description = "Declarative 2D vector graphics for OCaml";
+    longDescription = ''
+    Vg is an OCaml module for declarative 2D vector graphics. In Vg, images
+    are values that denote functions mapping points of the cartesian plane
+    to colors. The module provides combinators to define and compose these
+    values.
+
+    Renderers for PDF, SVG and the HTML canvas are distributed with the
+    module. An API allows to implement new renderers.
+    '';
+    homepage = webpage;
+    license = licenses.isc;
+    maintainers = [ maintainers.jirkamarsik ];
+    mainProgram = "vecho";
+    inherit (ocaml.meta) platforms;
+  };
+}