ActiveSupport::Configurable is deprecated without replacement, and will be removed in Rails 8.2

[thomaswitt]

The gem relies on ActiveSupport::Configurable, which is deprecated without replacement, and will be removed in Rails 8.2. Corresponding warnings appear after a Rails 8.1 upgrade when running the server.

[Petercopter]

You were able to get 8.1 installed? This is what I'm seeing

❯ bundle
Fetching gem metadata from https://rubygems.org/........
Resolving dependencies...
Could not find compatible versions

Because rails >= 8.1.0 depends on activesupport = 8.1.0
  and view_component >= 4.0.0.alpha1 depends on activesupport >= 7.1.0, < 8.1,
  rails >= 8.1.0 is incompatible with view_component >= 4.0.0.alpha1.
So, because Gemfile depends on rails ~> 8.1
  and Gemfile depends on view_component ~> 4.0,
  version solving has failed.

[Petercopter]

Looks like the team is already on it! 👍

#2467

Thank you!

[pboling]

I'm running rails 8.1 and the just released view_component 4.1.0, and I'm still seeing the deprecation warning coming from ViewComponent::Base inheritance. It seems the fix was not total.

Ah, yes: #2467 (comment)

[boardfish]

Thanks for letting us know! I'll admit I've been busy for some time, but config's an area I've contributed to before – intuitively I'm wondering if we should replicate ActiveSupport::Configurable inside ViewComponent::Configurable for the time being, but I also want to understand the reasoning for deprecating it and see whether that suggests we should do something different here.

[boardfish]

A quick spelunk suggests class_attribute is now preferred, but InheritableOptions (which I believe we make use of) isn't going away - see rails/rails#53970 for some more on that.