NoMethodError: undefined method `dependency` for `Faraday::Middleware:Class`

[AlexWayfer]

Basic Info

• Faraday Version: 2.2.0
• Ruby Version: 3.1.0p0

Issue description

I'm trying to update my faraday-encode_xml middleware to Faraday v2, but I've faced the issue which is not described in the UPGRADING.md.

Steps to reproduce

# frozen_string_literal: true

require 'faraday'

module Faraday
  module EncodeXML
    class Middleware < Faraday::Middleware
      dependency do
        require 'gyoku' unless defined?(::Gyoku)
      end
    end
  end
end

[olleolleolle]

The Faraday 2 variant does not do "optional, late-fetched dependencies". It uses a regular require at the top of the file.

[olleolleolle]

@AlexWayfer In order to have the information in the UPGRADING.md, I made a PR. Thanks for the inspiration!