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/cryptokit/default.nix

@@ -0,0 +1,35 @@
+{ lib, buildDunePackage, fetchFromGitHub, zlib, dune-configurator, zarith }:
+
+buildDunePackage rec {
+  pname = "cryptokit";
+  version = "1.17";
+
+  minimalOCamlVersion = "4.08";
+
+  src = fetchFromGitHub {
+    owner = "xavierleroy";
+    repo = "cryptokit";
+    rev = "release${lib.replaceStrings ["."] [""] version}";
+    sha256 = "sha256:1xi7kcigxkfridjas2zwldsfc21wi31cgln071sbmv4agh3dqbyw";
+  };
+
+  # dont do autotools configuration, but do trigger findlib's preConfigure hook
+  configurePhase = ''
+    runHook preConfigure
+    runHook postConfigure
+  '';
+
+  buildInputs = [ dune-configurator ];
+  propagatedBuildInputs = [ zarith zlib ];
+
+  doCheck = true;
+
+  meta = {
+    homepage = "http://pauillac.inria.fr/~xleroy/software.html";
+    description = "A library of cryptographic primitives for OCaml";
+    license = lib.licenses.lgpl2Only;
+    maintainers = [
+      lib.maintainers.maggesi
+    ];
+  };
+}