Why doesn't curry work with multiple arguments?

[Andrej Mitrovic]

Ok, enjoy this monstrosity:

template count(T...)
{
    enum count = T.length;
}

template myCurry(alias fun, args...)
{
    static if (args.length > (ParameterTypeTuple!fun).length)
    {
        static assert(0, Format!("Tried to pass %s arguments, max is %s.",
                                 count!args, (ParameterTypeTuple!fun).length));
    }

    static if (is(typeof(fun) == delegate) || is(typeof(fun) == function))
    {
        static if ((ParameterTypeTuple!fun).length - count!args)
        {
            ReturnType!fun myCurry(ParameterTypeTuple!fun[0 ..
(ParameterTypeTuple!fun).length - count!args] myarg)
            {
                return fun(args, myarg);
            }
        }
        else
        {
            ReturnType!fun myCurry()
            {
                return fun(args);
            }
        }
    }
}