Yeah, but that&#x27;s a serious problem. I can&#x27;t think of other languages that suffer from this, except perhaps Python.<p>Why should I have to install a single library in multiple places in my system, if I have multiple versions of Ruby installed? It&#x27;s a disaster for upgrades and deployment.<p>Plus, tools like RVM and rbenv seem to depend on a bunch of hacky symlinking and $PATH manipulation to make things work. Ensuring that developers&#x27; laptops have the same environment as production boxes is not trivial, no matter what the authors of these tools claim.