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/wt/default.nix

@@ -0,0 +1,56 @@
+{ lib, stdenv, fetchFromGitHub, cmake, boost, pkg-config, doxygen, qt48Full, libharu
+, pango, fcgi, firebird, libmysqlclient, postgresql, graphicsmagick, glew, openssl
+, pcre, harfbuzz, icu
+}:
+
+let
+  generic =
+    { version, sha256 }:
+    stdenv.mkDerivation {
+      pname = "wt";
+      inherit version;
+
+      src = fetchFromGitHub {
+        owner = "emweb";
+        repo = "wt";
+        rev = version;
+        inherit sha256;
+      };
+
+      nativeBuildInputs = [ cmake pkg-config ];
+      buildInputs = [
+        boost doxygen qt48Full libharu
+        pango fcgi firebird libmysqlclient postgresql graphicsmagick glew
+        openssl pcre harfbuzz icu
+      ];
+
+      cmakeFlags = [
+        "-DWT_CPP_11_MODE=-std=c++11"
+        "--no-warn-unused-cli"
+      ]
+      ++ lib.optionals (graphicsmagick != null) [
+        "-DWT_WRASTERIMAGE_IMPLEMENTATION=GraphicsMagick"
+        "-DGM_PREFIX=${graphicsmagick}"
+      ]
+      ++ lib.optional (libmysqlclient != null)
+        "-DMYSQL_PREFIX=${libmysqlclient}";
+
+      meta = with lib; {
+        homepage = "https://www.webtoolkit.eu/wt";
+        description = "C++ library for developing web applications";
+        platforms = platforms.linux;
+        license = licenses.gpl2;
+        maintainers = with maintainers; [ juliendehos willibutz ];
+      };
+    };
+in {
+  wt3 = generic {
+    version = "3.7.1";
+    sha256 = "19gf5lbrc5shpvcdyzjh20k8zdj4cybxqvkhwqfl9rvhw89qr11k";
+  };
+
+  wt4 = generic {
+    version = "4.6.1";
+    sha256 = "04pv4kb8d576bfnd9kjc3cfjls9cm3cgpaiabwb3iyq9z0w585gh";
+  };
+}