module A
	def self.init_on(target)
		target.foo = 123
	end
end

$base_module = A


module Test
	C = Struct.new(:id) do
		include $base_module

		@@base = $base_module

		def initialize
			@@base.init_on(self)
		end

		attr_accessor :foo
	end
end

c = Test::C.new
puts c.foo