```ruby
module Kernel

  alias_method :":metaclass", :singleton_class
  alias_method :metaclass, :singleton_class

  def fancy_require(file, compile = false)
    if compile
      file = Fancy::CodeLoader.compile_file! file
    end
    find_file = !compile
    Fancy::CodeLoader.load_compiled_file file, find_file
  end
end
```

Add compatibility for older Rubinius versions (wrt metaclass method) and use singleton_class if that fails.
user
```ruby
module Kernel
  begin
    alias_method ":metaclass", :metaclass
  rescue
    alias_method :":metaclass", :singleton_class
    alias_method :metaclass, :singleton_class
  end

  def fancy_require(file, compile = false)
    if compile
      file = Fancy::CodeLoader.compile_file! file
    end
    find_file = !compile
    Fancy::CodeLoader.load_compiled_file file, find_file
  end
end
```
assistant