In laravel when registering a provider one can do in app/Providers/AppServiceProvider.php something like:

public function register()
{
    if ($this->app->environment() == 'local') {
        $this->app->register(\My\Thing\StuffProvider::class);
    }
}

In octovercms how can this be achieved? I noticed that you add the same code as above in modules/system/ServiceProvider.php but this modules directory get overridden by php artisan october:update...

The solution I end with for the moment is to create a "main" plugin in which I implements the above register() method in the Plugin class...