How to make a theme depend on a module?

Question

My theme requires multiple modules to be install before it is fully functional. How can one set module dependency in a theme, so that when a user enables the theme, it will also enable the required modules? So far, I tried to specify the dependencies in the .info file of the theme, however, no success:

dependencies[] = some_module

Any help is much appreciated.

Answer 1

As far as I know, this functionality doesn't exist yet (up to Drupal 7).

A feature request is already created at https://drupal.org/node/474684 (for Drupal 8).

Answer 2

This was introduced in Drupal 8.9.0.

Quoting the change record https://www.drupal.org/node/2937955

To declare a dependency in your theme you need to add it to the .info.yml file:

name: test theme depending on nonexisting module
type: theme
core_version_requirement: ^8 || ^9
dependencies:
  - drupal:test_module_non_existing