Doctrine2 EntityManager via Aura.Di using wrapper and factory

DoctrineConfig.php

<?php

namespace Namespace\Di;

use Aura\Di\Config;
use Aura\Di\Container;
use Doctrine\Common\Cache\ApcCache;
use Doctrine\Common\Cache\ArrayCache;
use Doctrine\DBAL\Event\Listeners\MysqlSessionInit;
use Doctrine\ORM\Configuration;
use Doctrine\ORM\EntityManager;

class DoctrineConfig extends Config
{
    public function define(Container $di)
    {
        parent::define($di);

        // ... snip $connectionOptions and $config ...
        
        $di->set('entityManager', $di->lazy(array('Doctrine\ORM\EntityManager', 'create'), $connectionOptions, $config));
    }

    public function modify(Container $di)
    {
        parent::modify($di);

        $di->get('entityManager')->getEventManager()->addEventSubscriber(
            new MysqlSessionInit('utf8', 'utf8_unicode_ci')
        );
    }

    protected function getCacheImpl()
    {
        if (APP_MODE === 'development') {
            return new ArrayCache();
        }

        return new ApcCache();
    }

    protected function shouldAutoGenerateProxies()
    {
        return (APP_MODE === 'development');
    }
}

using-em-di-configuration.php

<?php

// Default EntityManager
$em1 = $di->get('entityManager');
$em2 = $di->get('entityManager');
var_dump($em1 === $em2); // true

// Grab a new EntityManager using Container::newFactory() rather than Container::newInstance()
$newEm = $di->newFactory('Doctrine\ORM\EntityManager');
var_dump($em1 !== $newEm); // true

As you will be getting different instances of entity manager. I feel this https://gist.github.com/jeremykendall/442b840df76ffca72a8d/446a2f79019e0ecb87679cee88728f26119b5225#file-doctrineconfig-php-L38-L40 line should be moved inside to the Factory.