How to remove steps from checkout in Sylius - symfony

Question

I'm using sylius/sylius 1.3.9 with symfony/framework-bundle 4.2.4. Regarding the doc to remove states from checkout you have to replace the whole configuration of the Sylius core bundle.
I put my configuration into src/Resources/SyliusCoreBundle/config/app/state_machine/sylius_order_checkout.yml:
winzou_state_machine:
sylius_order_checkout:
class: '%sylius.model.order.class%'
property_path: checkoutState
graph: sylius_order_checkout
state_machine_class: '%sylius.state_machine.class%'
states:
cart: ~
addressed: ~
completed: ~
transitions:
address:
from: [cart, addressed]
to: addressed
complete:
from: [addressed]
to: completed
callbacks:
after:
sylius_process_cart:
on: [address]
do: ['#sylius.order_processing.order_processor', process]
args: [object]
sylius_create_order:
on: [complete]
do: ['#sm.callback.cascade_transition', apply]
args: [object, event, create, sylius_order]
sylius_save_checkout_completion_date:
on: [complete]
do: [object, completeCheckout]
args: [object]
After that I execute:
php bin/console cache:clear -e dev
[...]
php bin/console debug:winzou:state-machine sylius_order_checkout -e dev
+--------------------+
| Configured States: |
+--------------------+
| cart |
| addressed |
| shipping_selected |
| shipping_skipped |
| payment_skipped |
| payment_selected |
| completed |
+--------------------+
[...]
Nothing changed. When I follow the link in the doc it says:
Bundle inheritance was removed in Symfony 4.0 [...]
So is it still possible with Symfony 4.2 to replace a whole configuration file of a bundle like suggested by the docs or is this a regression in Sylius 1.3 and what would be a possible solution if I did nothing wrong?

Answer 1

You can try to create state_machine directory in config/packages, put your YAML file and add this line in configureContainer() method into src/Kernel:
protected function configureContainer(ContainerBuilder $container, LoaderInterface $loader): void
{
...
$loader->load($confDir.'/state_machine/*'.self::CONFIG_EXTS, 'glob');
}