anchor.diff: -{ fetchFromGitHub, fetchpatch, stdenv, wrapQtAppsHook, pcre, pugixml, qtbase, qtmultimedia, qttools, yajl, libzip, hunspell
  +{ fetchFromGitHub, fetchpatch, stdenv, wrapQtAppsHook, git, pcre, pugixml, qtbase, libsForQt5, qtmultimedia, qttools, yajl, libzip, hunspell
   , boost, libGLU, lua, cmake,  which, }:
   
   let
  
positive.code:     makeQtWrapper $out/mudlet $out/bin/mudlet \
        --set LUA_CPATH "${luaEnv}/lib/lua/${lua.luaversion}/?.so" \
        --prefix LUA_PATH : "$NIX_LUA_PATH" \
        --run "cd $out";
    '';
  
  
negative.code: in
  stdenv.mkDerivation rec {
    pname = "mudlet";
    version = "4.3";
  
    src = fetchFromGitHub {
      owner = "Mudlet";
      repo = "Mudlet";
      rev = "Mudlet-${version}";
      fetchSubmodules = true;
      sha256 = "0qqdmivfwf9jmv5yx90z1fj99nlhnq762lfw6bcxgv74y4l4b4c0";
    };
  
    nativeBuildInputs = [ cmake wrapQtAppsHook git qttools which ];
    buildInputs = [
      pcre pugixml qtbase libsForQt5.qtkeychain qtmultimedia luaEnv libzip libGLU yajl boost hunspell
    ];
  
    WITH_FONTS = "NO";
  