New comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/issues/27047#issuecomment-741847532

Comment:
The issue is more that nearly no one reads post install messages :/

That said, I'm not super strongly opposed to adding the warning to the package. You'd have to add an `INSTALL.msg` file and put a message like "Snapper requires the dbus service to work."