composer require jhaoda/socialite-mailru

• Remove Laravel\Socialite\SocialiteServiceProvider from your providers[] array in config\app.php if you have added it already.
• Add SocialiteProviders\Manager\ServiceProvider to your providers[] array in config\app.php.

For example:

'providers' => [
    // a whole bunch of providers
    // remove 'Laravel\Socialite\SocialiteServiceProvider',
    'SocialiteProviders\Manager\ServiceProvider', // add
];

• Note: If you would like to use the Socialite Facade, you need to install it.

• Add SocialiteProviders\Manager\SocialiteWasCalled event to your listen[] array in <app_name>/Providers/EventServiceProvider.

• Add your listeners (i.e. the ones from the providers) to the SocialiteProviders\Manager\SocialiteWasCalled[] that you just created.

• The listener that you add for this provider is 'JhaoDa\SocialiteProviders\MailRu\MailRuExtendSocialite@handle'.

• Note: You do not need to add anything for the built-in socialite providers unless you override them with your own providers.

For example:

/**
 * The event handler mappings for the application.
 *
 * @var array
 */
protected $listen = [
    `SocialiteProviders\Manager\SocialiteWasCalled` => [
        'JhaoDa\SocialiteProviders\MailRu\MailRuExtendSocialite@handle'
    ],
];

Add to config/services.php:

'mailru' => [
    'client_id' => env('MAILRU_ID'),
    'client_secret' => env('MAILRU_SECRET'),
    'redirect' => env('MAILRU_REDIRECT'),  
],

Append provider values to your .env file:

// other values above
MAILRU_ID=your_app_id_for_the_service
MAILRU_SECRET=your_app_secret_for_the_service
MAILRU_REDIRECT=https://example.com/login