these 3 derivations will be built:
  /nix/store/m5a65s0672z66vpc8523jcww12551izg-home-manager-files.drv
  /nix/store/7jamgw07by4sypglca7574s9a5zh35py-hm-putter.json.drv
  /nix/store/87zrlv5d5fpgwc4sp3sqcx0p86qnjalp-home-manager-generation.drv