Symfony version(s) affected

7.0.x

Description

According to the docs, it should be possible to set service implementing the GroupProviderInterface interface through the GroupSequenceProvider attribute via its provider argument. This way, the validated class does not require to implement the GroupSequenceProviderInterface.
Docs (current): https://symfony.com/doc/current/validation/sequence_provider.html#advanced-validation-group-provider
Docs (6.4): https://symfony.com/doc/6.4/validation/sequence_provider.html#advanced-validation-group-provider

This functionality currently gets ignored and results in an error

Uncaught PHP Exception Symfony\Component\Validator\Exception\GroupDefinitionException: "Class "App\Model\Payload" must implement GroupSequenceProviderInterface." at ClassMetadata.php line 441

This works in 6.4 but not anymore in 7.0 and up
Tested in Symfony 7.1.2

How to reproduce

Example that should work but doesn't:

#[Assert\GroupSequenceProvider(provider: PayloadGroupProvider::class)]
final class Payload
{
    ...
}

final readonly class PayloadGroupProvider implements GroupProviderInterface
{
    public function getGroups(object $object): array|GroupSequence
    {
        return ['Payload', 'SomeOtherGroup'];
    }
}

Possible Solution

In the AttributeLoader when checking for the GroupSequenceProvider attribute, also check for the provider argument and set the content inside the ClassMetadata object.

Additional Context

No response