Drush 12 deprecations

Note: When we'll want to drop Drush 11 support, we'll just have to remove the drush.services.yml file.

Great thanks. Did you test with both Drush 11 and 12?

> Note: When we'll want to drop Drush 11 support, we'll just have to remove the drush.services.yml file.
Please could you raise an issue?

AFAICS it works without this change in Drush 12. According to https://www.drush.org/12.x/commands/, the old way is deprecated in Drush 12 and will be removed in Drush 13. This change is still a good idea, it would be clearer to update the IS and title.

To prove this patch works I suggest that we need a version that removes the services file. We won't commit it however we can check that it's working.

@AdamPS

Did you test with both Drush 11 and 12?

Nope I didn't. I thought reviewers would do it.

Please could you raise an issue?

I can but I would say that it should be done in a 1.5.x version which doesn't exist right now.
We would also need to add the following lines to the composer.json:

     "conflict": {
        "drush/drush": "<12"
     }

AFAICS it works without this change in Drush 12.

Did you tried to use the command on 1.4.1 with drush 12?
Cause it should throw a "mailer:override command is undefined" error.

The doc says that drush.services.yml is deprecated in drush 12 and will be removed in Drush 13.
But it also says that

• Drush 12 expects commandfiles to use a create() method to inject Drupal and Drush dependencies.
• Drush 12 expects all commandfiles in the /Drush/ directory. The Drush subdirectory is a new requirement.

Those changes are required to run a command with drush 12.

Did you tried to use the command on 1.4.1 with drush 12?

Yes it is working fine for me.