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/secp256k1-internal/default.nix

@@ -0,0 +1,48 @@
+{ lib
+, fetchFromGitLab
+, buildDunePackage
+, gmp
+, dune-configurator
+, cstruct
+, bigstring
+, alcotest
+, hex
+}:
+
+buildDunePackage rec {
+  pname = "secp256k1-internal";
+  version = "0.2";
+  src = fetchFromGitLab {
+    owner = "nomadic-labs";
+    repo = "ocaml-secp256k1-internal";
+    rev = "v${version}";
+    sha256 = "1g9fyi78nmmm19l2cggwj14m4n80rz7gmnh1gq376zids71s6qxv";
+  };
+
+  useDune2 = true;
+
+  minimalOCamlVersion = "4.08";
+
+  propagatedBuildInputs = [
+    gmp
+    cstruct
+    bigstring
+  ];
+
+  buildInputs = [
+    dune-configurator
+  ];
+
+  checkInputs = [
+    alcotest
+    hex
+  ];
+
+  doCheck = true;
+
+  meta = {
+    description = "Bindings to secp256k1 internal functions (generic operations on the curve)";
+    license = lib.licenses.mit;
+    maintainers = [ lib.maintainers.ulrikstrid ];
+  };
+}