anchor.diff:  assert assertMsg (withGtk2 -> withWebKit == false) "wxGTK31: You cannot enable withWebKit when using withGtk2.";
   
   stdenv.mkDerivation rec {
  -  version = "3.1.3";
  +  version = "3.1.4";
     pname = "wxwidgets";
   
     src = fetchFromGitHub {
       owner = "wxWidgets";
       repo = "wxWidgets";
       rev = "v${version}";
  -    sha256 = "022mby78q7n0bhd4mph04hz93c9qamnvzv3h1s26r839k28760f4";
  +    sha256 = "1fwzrk6w5k0vs8kqdq5lpzdbp5c09hx740wg6mi6vgmc1r67dv67";
  +    fetchSubmodules = true;
     };
   
     buildInputs = [
  -    libXinerama libSM libXxf86vm xorgproto gst_all_1.gstreamer gst_all_1.gst-plugins-base
  -  ] ++ optionals withGtk2 [ gtk2 ]
  -    ++ optional (!withGtk2) gtk3
  -    ++ optional withMesa libGLU
  -    ++ optional withWebKit webkitgtk
  -    ++ optionals stdenv.isDarwin [ setfile Carbon Cocoa Kernel QTKit ];
  +    libXinerama
  +    libSM
  +    libXxf86vm
  +    libXtst
  +    xorgproto
  +    gst_all_1.gstreamer
  +    gst_all_1.gst-plugins-base
  +  ] ++ optionals withGtk2 [ gtk2 GConf ]
  +  ++ optional (!withGtk2) gtk3
  +  ++ optional withMesa libGLU
  +  ++ optional withWebKit webkitgtk
  +  ++ optionals stdenv.isDarwin [ setfile Carbon Cocoa Kernel QTKit ];
   
     nativeBuildInputs = [ pkgconfig ];
   
     propagatedBuildInputs = optional stdenv.isDarwin AGL;
   
     patches = [
  -    (fetchurl { # https://trac.wxwidgets.org/ticket/17942
  +    (fetchurl {
  +      # https://trac.wxwidgets.org/ticket/17942
         url = "https://trac.wxwidgets.org/raw-attachment/ticket/17942/"
  -          + "fix_assertion_using_hide_in_destroy.diff";
  +        + "fix_assertion_using_hide_in_destroy.diff";
         sha256 = "009y3dav79wiig789vkkc07g1qdqprg1544lih79199kb1h64lvy";
       })
     ];
   
     configureFlags =
  -    [ "--disable-precomp-headers" "--enable-mediactrl"
  +    [
  +      "--disable-precomp-headers"
  +      "--enable-mediactrl"
         (if compat28 then "--enable-compat28" else "--disable-compat28")
  -      (if compat30 then "--enable-compat30" else "--disable-compat30") ]
  +      (if compat30 then "--enable-compat30" else "--disable-compat30")
  +    ]
       ++ optional unicode "--enable-unicode"
       ++ optional withMesa "--with-opengl"
       ++ optionals stdenv.isDarwin
         # allow building on 64-bit
         [ "--with-cocoa" "--enable-universal-binaries" "--with-macosx-version-min=10.7" ]
       ++ optionals withWebKit
  -      ["--enable-webview" "--enable-webviewwebkit"];
  +      [ "--enable-webview" "--enable-webviewwebkit" ];
   
     SEARCH_LIB = "${libGLU.out}/lib ${libGL.out}/lib ";
   
  
positive.code:     platforms = with platforms; darwin ++ linux;
      license = licenses.wxWindows;
      homepage = "https://www.wxwidgets.org/";
      description = "a C++ library that lets developers create applications for Windows, macOS, Linux and other platforms with a single code base";
      longDescription = "wxWidgets gives you a single, easy-to-use API for writing GUI applications on multiple platforms that still utilize the native platform's controls and utilities. Link with the appropriate library for your platform and compiler, and your application will adopt the look and feel appropriate to that platform. On top of great GUI functionality, wxWidgets gives you: online help, network programming, streams, clipboard and drag and drop, multithreading, image loading and saving in a variety of popular formats, database support, HTML viewing and printing, and much more.";
      badPlatforms = [ "x86_64-darwin" ];
    };
  }
  
negative.code: { stdenv
  , fetchFromGitHub
  , fetchurl
  , pkgconfig
  , libXinerama
  , libSM
  , libXxf86vm
  , libXtst
  , gtk2
  , GConf ? null
  , gtk3
  , xorgproto
  , gst_all_1
  , setfile
  , libGLSupported ? stdenv.lib.elem stdenv.hostPlatform.system stdenv.lib.platforms.mesaPlatforms
  , withMesa ? libGLSupported
  , libGLU ? null
  , libGL ? null
  , compat28 ? false
  , compat30 ? true
  , unicode ? true
  , withGtk2 ? true
  , withWebKit ? false
  , webkitgtk ? null
  , AGL ? null
  , Carbon ? null
  , Cocoa ? null
  , Kernel ? null
  , QTKit ? null
  }:
  
  with stdenv.lib;
  