these 3 derivations will be built:
  /nix/store/rn3z2qvqaw2i4bam0zf6adlg5ijz1ljf-home-manager-files.drv
  /nix/store/lcjvk9hs0w0r3w4pd1jl36vlkp5g4q6i-hm-putter.json.drv
  /nix/store/3wj27hvjla3nwsffdvkafsg04y50a1j8-home-manager-generation.drv