these 3 derivations will be built:
  /nix/store/7xf2lhnz5jwjy41njxxz8d5j6i54zlab-home-manager-files.drv
  /nix/store/nl99knv9czapx6mjk9dzqyf8q38lnwks-hm-putter.json.drv
  /nix/store/l6flpsylj7wvl4kynb5livgwxgfhfll9-home-manager-generation.drv