```ruby
# frozen_string_literal: true

module SolidusEasypost
  class Configuration
    attr_reader :purchase_labels

    def initialize
      @purchase_labels = true
    end
  end
end
```

Fix `purchase_labels` option not being configurable
user
```ruby
# frozen_string_literal: true

module SolidusEasypost
  class Configuration
    attr_accessor :purchase_labels

    def initialize
      self.purchase_labels = true
    end
  end
end
```
assistant