pry prompt after v0.13.0

new_pry_config.rb

unless Rails.env.development?
  default_prompt = Pry::Prompt[:default]
  env = Pry::Helpers::Text.red(Rails.env.upcase)
  Pry.config.prompt = Pry::Prompt.new(
    'custom',
    'my custom prompt',
    [
      proc{ |*args| "#{env} #{default_prompt.wait_proc.call(*args)}" },
      proc{ |*args| "#{env} #{default_prompt.incomplete_proc.call(*args)}" },
    ],
  )
end