If you include symfony/http-kernel and use the bundle system, it will fail unless you have manually required symfony/finder due to this line: https://github.com/symfony/symfony/blob/master/src/Symfony/Component/HttpKernel/Bundle/Bundle.php#L171

But actually, the only thing that uses this is Application from FrameworkBundle. So, the dependency should maybe be added to symfony/framework-bundle... but really, it's a bit odd that the Bundle class in http-kernel holds the registerCommands() logic.

Options:
A) Add symfony/finder to symfony/http-kernel: (seems like overkill, but the most technically correct)
B) Add symfony/finder to symfony/framework-bundle (practical)
C) Something else :)

Thanks!