How common is this? I use 2.5 different package managers day-to-day (homebrew/pacman/pakku) and a few more occasionally (portage/pkg/apt). I can't really think of a situation where I had to really think about what I was running to install something. I'd imagine a scenario in which you're often dropped into a box you don't usually interact with would typically also come with a more homogenous environment as far as operating systems go.