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/seq/default.nix

@@ -0,0 +1,43 @@
+{ stdenv, lib, fetchFromGitHub, ocaml, findlib, ocamlbuild }:
+
+stdenv.mkDerivation ({
+  version = "0.1";
+  pname = "ocaml${ocaml.version}-seq";
+
+  meta = {
+    license = lib.licenses.lgpl21;
+    maintainers = [ lib.maintainers.vbgl ];
+    homepage = "https://github.com/c-cube/seq";
+    inherit (ocaml.meta) platforms;
+  };
+
+} // (if lib.versionOlder ocaml.version "4.07" then {
+
+  src = fetchFromGitHub {
+    owner = "c-cube";
+    repo = "seq";
+    rev = "0.1";
+    sha256 = "1cjpsc7q76yfgq9iyvswxgic4kfq2vcqdlmxjdjgd4lx87zvcwrv";
+  };
+
+  nativeBuildInputs = [ ocaml findlib ocamlbuild ];
+  strictDeps = true;
+
+  createFindlibDestdir = true;
+
+  meta.description = "Compatibility package for OCaml’s standard iterator type starting from 4.07";
+
+} else {
+
+  src = ./src-base;
+
+  dontBuild = true;
+
+  installPhase = ''
+    mkdir -p $out/lib/ocaml/${ocaml.version}/site-lib/seq
+    cp META $out/lib/ocaml/${ocaml.version}/site-lib/seq
+  '';
+
+  meta.description = "dummy backward-compatibility package for iterators";
+
+}))