"Topology" may be a poor word choice.First I'm looking comparison of required, important, standard, optional, and extra as package labels [particularly interested in corner cases]. I've been looking at [https://www.debian.org/doc/debian-policy/]. I'm not grasping something. Not sure what ;/
Similarly for Depends, Recommends, Suggests, etc. I'm currently reading [https://www.debian.org/doc/manuals/debian-reference/ch02.en.html#_package_dependencies] Other suggestions? TIA
