super_module.rb

module Foo
  def foo
    'foo'
  end
end

module FooWithBar
  def foo
    "bar #{super}"
  end
end

module FooWithBatz
  def foo
    "batz #{super}"
  end
end

class Base
  include Foo
  include FooWithBar
  include FooWithBatz
end

o = Base.new
o.foo # => "batz bar foo"