Mixable method where we can sort method call sequence

define_mixable_method.rb

class Module
  def define_mixable_method(name:, calls:, main:)
    define_method(name) do |&block|
      method_candidates = calls.map {|name| method(name) }
      block.call(main, method_candidates).each do |m|
        m.call
      end
    end
  end
end

class Foo
  def a
    puts 'a'
  end

  def b
    puts 'b'
  end

  define_mixable_method(name: :y, calls: [:a, :b], main: -> { puts 'y' })
end

foo = Foo.new
foo.y do |main, candidates|
  [main] + candidates.reverse
end
# => y, b, a
foo.y do |main, candidates|
  candidates + [main]
end
# => a, b, y