these 3 derivations will be built:
  /nix/store/0ffm8pynmrj0ia4vbknjwxlrbnr4bahc-home-manager-files.drv
  /nix/store/1912w5zgjyacadnbjngrf1pzwz6f32hw-hm-putter.json.drv
  /nix/store/fy7x9pmwlp2zl0b3mn6v2vk7993abbk9-home-manager-generation.drv