anchor.diff:          LUA_INC="-I${lua}/include" LUA_CDIR="$out/lib/lua/${lua.luaversion}"
           EXPAT_INC="-I${expat.dev}/include");
       '';
  +
  +    disabled = isLuaJIT;
   
       meta = {
         homepage = "http://matthewwild.co.uk/projects/luaexpat";
  
positive.code:     buildInputs = [ unzip zziplib ];
      patches = [ ../development/lua-modules/zip.patch ];
      # does not currently work under lua 5.2
      disabled = isLua52;
      meta = {
        homepage = "https://github.com/luaforge/luazip";
        platforms = stdenv.lib.platforms.linux;
  
negative.code:       rm -rf $out/share/lua/${lua.luaversion}/cjson/tests
      '';
      installTargets = "install install-extra";
      disabled = isLuaJIT;
      meta = {
        description = "Lua C extension module for JSON support";
        license = stdenv.lib.licenses.mit;
  