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/ocaml-libvirt/default.nix

@@ -0,0 +1,37 @@
+{ lib, stdenv, fetchFromGitLab, libvirt, autoreconfHook, pkg-config, ocaml, findlib, perl }:
+
+lib.throwIfNot (lib.versionAtLeast ocaml.version "4.02")
+  "libvirt is not available for OCaml ${ocaml.version}"
+
+stdenv.mkDerivation rec {
+  pname = "ocaml-libvirt";
+  version = "0.6.1.5";
+
+  src = fetchFromGitLab {
+    owner = "libvirt";
+    repo = "libvirt-ocaml";
+    rev = "v${version}";
+    sha256 = "0xpkdmknk74yqxgw8z2w8b7ss8hpx92xnab5fsqg2byyj55gzf2k";
+  };
+
+  propagatedBuildInputs = [ libvirt ];
+
+  nativeBuildInputs = [ autoreconfHook pkg-config findlib perl ocaml ];
+
+  strictDeps = true;
+
+  buildFlags = [ "all" "opt" "CPPFLAGS=-Wno-error" ];
+  installTargets = "install-opt";
+  preInstall = ''
+    # Fix 'dllmllibvirt.so' install failure into non-existent directory.
+    mkdir -p $OCAMLFIND_DESTDIR/stublibs
+  '';
+
+  meta = with lib; {
+    description = "OCaml bindings for libvirt";
+    homepage = "https://libvirt.org/ocaml/";
+    license = licenses.gpl2;
+    maintainers = [ maintainers.volth ];
+    inherit (ocaml.meta) platforms;
+  };
+}