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/libraries/utf8cpp/default.nix

@@ -0,0 +1,32 @@
+{ lib, stdenv, fetchFromGitHub, cmake }:
+
+stdenv.mkDerivation rec {
+  pname = "utf8cpp";
+  version = "3.2.1";
+
+  src = fetchFromGitHub {
+    owner = "nemtrif";
+    repo = "utfcpp";
+    rev = "v${version}";
+    fetchSubmodules = true;
+    sha256 = "0gsbwif97i025bxgyax4fbf6v9z44zrca4s6wwd8x36ac8qzjppf";
+  };
+
+  cmakeFlags = [
+    "-DCMAKE_INSTALL_LIBDIR=lib"
+  ];
+
+  nativeBuildInputs = [ cmake ];
+
+  # Tests fail on darwin, probably due to a bug in the test framework:
+  # https://github.com/nemtrif/utfcpp/issues/84
+  doCheck = !stdenv.isDarwin;
+
+  meta = with lib; {
+    homepage = "https://github.com/nemtrif/utfcpp";
+    description = "UTF-8 with C++ in a Portable Way";
+    license = licenses.boost;
+    maintainers = with maintainers; [ jobojeha ];
+    platforms = platforms.all;
+  };
+}