Enabling Commerce Recurring without Commerce Product installed is causing installation error

I have experienced the same issue installing Commerce Recurring from scratch on a fresh Drupal install - both via UI and Drush, therefore I am updating IS.

UI:

The website encountered an unexpected error. Try again later.

Drupal\Component\Plugin\Exception\PluginNotFoundException: The "product_variation" plugin does not exist. Valid plugin IDs for Drupal\commerce_recurring\SubscriptionTypeManager are: standalone in Drupal\Core\Plugin\DefaultPluginManager->doGetDefinition() (line 53 of core/lib/Drupal/Component/Plugin/Discovery/DiscoveryTrait.php). 

CLI:

<

 [success] Installation complete.  User name: admin  User password: t8EgscG89u
zaporylie@drupal-commerce-web:/var/www/html$ drush en commerce_recurring
The following module(s) will be enabled: commerce_recurring, commerce, address, entity, inline_entity_form, token, commerce_price, commerce_order, commerce_store, commerce_number_pattern, entity_reference_revisions, profile, state_machine, commerce_payment, advancedqueue

 Do you want to continue? (yes/no) [yes]:
 > 


In DiscoveryTrait.php line 53:
                                                                                                                                         
  The "product_variation" plugin does not exist. Valid plugin IDs for Drupal\commerce_recurring\SubscriptionTypeManager are: standalone  
                                                                                                                                         

My initial idea is to move the config depending on commerce_product to the config/optional but will have to investigate this a bit closer.

It seems like the reg regression was unintentional and introduced in #3193200: Add an admin-facing page for viewing the details of a subscription → . After some manual testing, I stand by my previous statement - moving the respective config mentioned in #9 from config/install to config/optional does the trick. MR to follow.

Why not make commerce_product a dependency and keep the files in config/install?
Aren't they required?

Commerce Product is not required by Commerce Recurring and the Recurring framework can be used standalone. MR is now open and ready for review. In addition to moving files dependencies were added where required.

Looks fine to me. It seems we have varying types of support for "Commerce Recurring without Commerce Product," though in practice I bet there are approximately 0 people using it that way. 🤣

Still, if moving this to optional doesn't bother anything, works for me!

I bet there are approximately 0 people using it that way. 🤣

There's at least one in #11 😉

Merged, thank you!

Automatically closed - issue fixed for 2 weeks with no activity.