Enabling entity module when existing entity reference field depends on it
Over time you will extend functionality. Locally things work but then you need to start planning how to update existing environments and then interesting problems will arise.
Articles tagged with update hooks
Modifying module configuration in update hook after enabling
Depending on the type of your project, you may need to deal with update hooks which enable modules programmatically and then modify their configuration. When dealing with configuration updates with hook_update_N(), there is one thing to look out for related to enabling modules programmatically.
