This is similar to the static vs dynamic linking debate. It’s easiest to deploy things if they are all self contained, but Linux distros have a strong tradition

This is similar to the static vs dynamic linking debate. It’s easiest to deploy things if they are all self contained, but Linux distros have a strong tradition of dynamic linking and really don’t want to have (say) two separate paycopg2 installations if they can be shared. And once there’s a place to share stuff, users are going to inject new stuffs into it and give the package manager all sorts of trouble.