It&#x27;s just against every software engineering best practices. You find a library which implements what you want&#x2F;need? You don&#x27;t copy&amp;paste 10% of it into your repository just to make sure it won&#x27;t ever brake. What if it&#x27;s broken already? They will fix it and your version won&#x27;t be updated. This logic is not even ok with your own code, why should it be promoted with somebody else&#x27;s code?