An answer to crella133's question in #ruby IRC

make_it_work.rb

class Foo
  def initialize(a, b, c:)
    puts 'Foo!'
  end
end

class MakeItWork < Foo
  def initialize(*args, **kwargs, &block)
    parameters = method(__method__).super_method.parameters

    required = parameters.count { |key, _value| key == :req }
    keywords = parameters.filter_map do |key, value|
      value if key == :keyreq
    end

    super(*args.first(required), **kwargs.slice(*keywords), &block)
  end
end

MakeItWork.new 1, 2, 3, a: 42, b: 42, c: 5
#>> Foo!