Ummm, whats the question? If your asking if l4 packages work with l5 then it totally depends on what that package does.

https://github.com/barryvdh/laravel-elfinder Laravel 5 run ?

Well without digging into the code and reviewing the complete package, I would say it is NOT. The developer is only mentioning Laravel 4 througout the readme.

Check the 0.3 branch, it is being updated to Laravel 5. https://github.com/barryvdh/laravel-elfinder/tree/0.3

Barryvdh is doing a great job updating his packages to Laravel 5.

http://i59.tinypic.com/if7pr6.jpg fail packages install

{ "name": "laravel/laravel", "description": "The Laravel Framework.", "keywords": ["framework", "laravel"], "license": "MIT", "type": "project", "require": { "laravel/framework": "dev-master#700bbf22bb325a3ddd10e2fc839feb9b4958387a", "illuminate/html": "5.0.@dev", "bllim/datatables": "", "mitchellvanw/laravel-doctrine": "0.4.*" }, "require-dev": { "phpunit/phpunit": "~4.0", "way/generators": "~3.0" }, "autoload": { "classmap": [ "database", "tests/TestCase.php" ], "psr-4": { "App\": "app/" } }, "scripts": { "post-install-cmd": [ "php artisan clear-compiled", "php artisan route:scan", "php artisan event:scan", "php artisan optimize" ], "post-update-cmd": [ "php artisan clear-compiled", "php artisan optimize" ], "post-create-project-cmd": [ "php artisan key:generate" ] }, "config": { "preferred-install": "dist" }, "minimum-stability": "dev" }