Is ".*" necessary? I think "^_" should be enough.

IMO installation failures are equally bad, no matter if they happen in 1% of cases or in 100%.

Well, you're wrong. If you have 10,000 packages and 1,000 of them are failing it's clearly useful to be able to prioritize which to fix first.

> I will not do take home assignments for free if they take more than 1h of my time.

How is it possible to do anything meaningful in just an hour?