Otherwise one might get an error like:

cachix push /nix/store/7i1kqf6x52l1fhqqdmqgggjr0zigggik-cachix-0.1.3/bin/cachix

NoInput "You need to specify store paths either as stdin or as a cli argument"

There are some command line (e.g. --min-memory and --adj-memory for autoballooning, also --networking-model in #20) switches that are better to have also in the configuration file that not introduced yet.

So the idea is to have a configuration file that will set all Default("...") in parameters for kingpin.