class Dry::Logic::Rule

def self.specialize(arity, curried, base = Rule)
  base.interfaces.fetch_or_store([arity, curried]) do
    interface = Interface.new(arity, curried)
    klass = Class.new(base) { include interface }
    base.const_set("#{base.name.split('::').last}#{interface.name}", klass)
    klass
  end
end