Display system status on all pages and store it in a variable

With so many years of inactivity wonder if this can be closed?

I suppose there could still be something in this. If a status report item fails, the "One or more problems..." message is only displayed on /admin/content and /admin/config via the controller, but update.module displays messages about required updates on almost all admin pages via hook_page_top().

I agree with longwave: Requirement errors should be displayed on any admin page, similarly to update messages.

The patch needs to be re-rolled.

I removed the issue tag, since there is already an issue for Drupal 7 ( 📌 Backport "Display the system status on all pages and store it in a variable" Needs review ).

I've rerolled this to follow similar logic to the advisories check. We will need to add some caching because this is processed on every admin page and \Drupal\system\SystemManager::checkRequirements loads a lot of files and invokes a lot of hooks.

This would also be quite annoying in local environments that are either on 11.x or have the rebuild_access setting enabled. This is what it looks like for my core env: