composer require socialiteproviders/weixin
Please see the Base Installation Guide, then follow the provider specific instructions below.
config/services.php'weixin' => [    
  'client_id' => env('WEIXIN_CLIENT_ID'),  
  'client_secret' => env('WEIXIN_CLIENT_SECRET'),  
  'redirect' => env('WEIXIN_REDIRECT_URI') 
],
Configure the package's listener to listen for SocialiteWasCalled events.
Add the event to your listen[] array in app/Providers/EventServiceProvider. See the Base Installation Guide for detailed instructions.
protected $listen = [
    \SocialiteProviders\Manager\SocialiteWasCalled::class => [
        // ... other providers
        'SocialiteProviders\\Weixin\\WeixinExtendSocialite@handle',
    ],
];
You should now be able to use the provider like you would regularly use Socialite (assuming you have the facade installed):
return Socialite::driver('weixin')->redirect();
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