Is it possible to make Modal fieldable?

Probably not since modals are config entities, not content entities. Config entities are not field-able.

@Alice Andrade anything to share?

@renatog my fellow, any reason for being config entities?

this feature makes so much sense

@larruda huge pleasure talking to you, master! 👑

any reason for being config entities?

To use configuration management

Explanation

1. Version 8.x-2.19 → is using Content Entity ( ref )
2. Migrated to Config Entity on 4.x at #3142963: [PLAN] Change Modal Entity from Content Entity to Config Entity →
3. Motivation was to export Modals with drush cex like webform
4. Was evaluated pros / cons of Content Entity x Config Entity
5. At the time we didn't find a "hard-reason" to use Content Entity
6. On the other hand, exporting feature was something interesting

For this reasons the migration but I'm open to consider using Content Entity if we have a good justification

About making Modal fieldable; I truly agree that would be an important milestone for the project's growth

Hey bro! good talking to you too :)

Thanks for the explanation, the reasons behind that decision seem valid, in particular the ability to export modals as configuration entities.

I've been experimenting https://www.drupal.org/project/single_content_sync → module which - you probably know - mimics that same behavior for content entities, and it's working good so far. Maybe that's a drop-in replacement for that in case we decide to invest in this change.

Also it's good to know this has already been done in 8.x-2.19, it's not a wish anymore but a reality then!
Does that mean from a very simplistic standpoint the next step would be to port that do D10 now?

Wish you the best!!!