Symfony version(s) affected

6.0.x

Description

Got three parallel applications, using same composer definition.
Only one of them make use of symfony notifier

Having installed symfony/mercure-notifier makes the other applications fail with:

The service "notifier.transport_factory.mercure" has a dependency on a non-existent service "Symfony\Component\Mercure\HubRegistry".

https://github.com/symfony/framework-bundle/blob/6.1/DependencyInjection/FrameworkExtension.php#L2599-L2603

Checks the existence of symfony/mercure-notifier and symfony/mercure-bundle but NOT that symfony/mercure-bundle is enabled.

The only existence of the packages does not have to mean that are enabled for that application.

How to reproduce

1. Make two parallel applications using the same composer definition.
2. Install notifier and mercure-notifier on one of them.
3. The other application will fail to boot as HubRegistry has to be configured

Possible Solution

• BEST: FrameworkExtension should delegate on symfony/mercure-notifier the dependency injection upon Mercure-bundle is enabled
• AFFORDABLE: FrameworkExtension could check if Mercure-Bundle is enabled.

if (ContainerBuilder::willBeAvailable('symfony/mercure-notifier', MercureTransportFactory::class, $parentPackages)
            && ContainerBuilder::willBeAvailable('symfony/mercure-bundle', MercureBundle::class, $parentPackages)
            && array_key_exists('MercureBundle',$container->getParameter('kernel.bundles')))

• SLOPPY: notifier.transport_factory.mercure could have a nullable HubRegistry parameter, doing nothing

Additional Context

No response