I'd like to just use apt, it won't work for me. At least with Python, pip easily integrates virtualenv, which isn't true of yum or apt as far as I know. Plus

I'd like to just use apt, it won't work for me. At least with Python, pip easily integrates virtualenv, which isn't true of yum or apt as far as I know. Plus, python devs can package once for pip and have it work on any system, without having to package separate deb, rpm, txz, etc. This strikes the balance of having too many package managers for devs to support and having too many package managers for me to use. I've made my peace with a single package manager per language plus apt for my OS.