these 3 derivations will be built:
  /nix/store/66jha01p5mipz81aw37lmcrmzm6q8b0j-home-manager-files.drv
  /nix/store/bw04qj8n0rzjzchdxc86p4vnjd9py9dd-hm-putter.json.drv
  /nix/store/5wn6amg0dfy1f2qbmx8lx9j5a94k2qci-home-manager-generation.drv