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/tools/text/html-tidy/default.nix

@@ -0,0 +1,42 @@
+{ lib, stdenv, fetchFromGitHub, fetchpatch, cmake, libxslt, html-tidy }:
+
+stdenv.mkDerivation rec {
+  pname = "html-tidy";
+  version = "5.8.0";
+
+  src = fetchFromGitHub {
+    owner = "htacg";
+    repo = "tidy-html5";
+    rev = version;
+    sha256 = "sha256-ZMz0NySxzX2XHiqB8f5asvwjIG6kdIcq8Gb3EbAxBaU=";
+  };
+
+  # https://github.com/htacg/tidy-html5/pull/1036
+  patches = (fetchpatch {
+    url = "https://github.com/htacg/tidy-html5/commit/e9aa038bd06bd8197a0dc049380bc2945ff55b29.diff";
+    sha256 = "sha256-Q2GjinNBWLL+HXUtslzDJ7CJSTflckbjweiSMCnIVwg=";
+  });
+
+  nativeBuildInputs = [ cmake libxslt/*manpage*/ ]
+    ++ lib.optional (stdenv.hostPlatform != stdenv.buildPlatform) html-tidy;
+
+  cmakeFlags = lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
+    "-DHOST_TIDY=tidy"
+  ];
+
+  # ATM bin/tidy is statically linked, as upstream provides no other option yet.
+  # https://github.com/htacg/tidy-html5/issues/326#issuecomment-160322107
+
+  meta = with lib; {
+    description = "A HTML validator and `tidier'";
+    longDescription = ''
+      HTML Tidy is a command-line tool and C library that can be
+      used to validate and fix HTML data.
+    '';
+    license = licenses.libpng; # very close to it - the 3 clauses are identical
+    homepage = "http://html-tidy.org";
+    platforms = platforms.all;
+    maintainers = with maintainers; [ edwtjo ];
+    mainProgram = "tidy";
+  };
+}