these 3 derivations will be built:
  /nix/store/ma7sw3k2zg8bmw8z9k3h06zvbfb0faq8-home-manager-files.drv
  /nix/store/bi61brv0h5b0xccbxg3vw7lxills5g34-hm-putter.json.drv
  /nix/store/wrmspnxypdis918yzkyb2jy75j0yxyf2-home-manager-generation.drv