Complete the revision implementation

+1 this. I need to track which user modified the profile as well as accept log messages about the modification.

I'm not sure about the deprecation format for getRevisionAuthor() and setRevisionAuthorId().

+++ b/profile.install
@@ -160,3 +160,51 @@ function profile_update_8008() {
+  // Use the "changed" timestamp as the initial revision_created.
+  $database = \Drupal::database();
+  $database->update($entity_type->getRevisionTable())
+    ->expression('revision_created', 'changed')
+    ->execute();

There's no need for this, you can use ->setInitialValutFromField() on the field storage definition before installing it :)

Not really, that's what happened when I tried that:

Failed: Illegal initial value definition on revision_created: The field types do not match.

I could set it the initialValue to "created", but then the initial value would be "wrong".

Right, don't mind me :D

Even if this task isn't about the UI, we need to make sure the revision_log field isn't shown by default on the user register form...
And this will be causing issues for the profile form in checkout as well.

Patch works for me, no more error entities définition" on the "admin/reports/status" page.
but, after the patch apply, the module was not install? ...
and to reinstall it, I needed to remove the 4 following configuation (drush config-delete xxxx):

• system.action.profile_delete_action
• system.action.profile_publish_action
• system.action.profile_unpublish_action
• views.view.profiles

Fortunately, all my user profiles have remained in place ;-)