How to prevent before(:all) hooks in RSpec

no_before_all_hooks.rb

module PreventContextHooks
  def before(*args)
    disallow_context_or_all_hooks(args.first)
    super
  end

  def after(*args)
    disallow_context_or_all_hooks(args.first)
    super
  end

private

  def disallow_context_or_all_hooks(scope)
    return unless scope == :all || scope == :context
    raise "Don't do that!"
  end
end

RSpec.configure do |config|
  config.extend PreventContextHooks
end