Potential changes as it will soon be possible for themes to declare dependencies on modules.

[bbenjamin]

After roughly a decade, this issue has been escalated to critical and may actually see completion in the near future.
https://www.drupal.org/project/drupal/issues/474684

In my most recent patch at the time of writing this (#206), I made some changes to \Drupal\Core\Extension\ModuleHandler::buildModuleDependencies that prevent uninstalling modules that enabled themes depend on. The experience is not great at the moment - Drush will output an error rather than useful information about the dependencies.

It seems like changes might be needed on Drush's end to provide useful output when a user attempts to disable a module depended-upon by an enabled theme. I'd like to make sure I implement this in a way that ensures it works well with Drush. Please weigh in on that issue if there's anything you'd like considered in that feature's implementation.

[weitzman]

This got in! A backward compatible Drush PR is welcome.