[giancarlostoro]

I believe if you do dpkg --contents keybase.deb (or whatever it's called) it will list out what files are in a debian file. You should be able to see if they're including their own that conflict with the rest of the OS, but also if a package is going to mess with a file the OS installed, my experience has been that the package manager will warn you of this or not allow it, but I can't remember off the top of my head. Sane use of dependencies on Debian means depending on the specific dependency from that specific version of Debian.

I've built my own Debian packages at work, but I'm not a total guru yet. I've never ran into issues with KeyBase yet on Linux, but honestly you could always open up a GitHub issue with your concerns to find out.

Edit:

Best I can tell from their github they install KeyBase to /opt/keybase specifically, or at least the main stuff, which is what third party packages usually do.