these 3 derivations will be built:
  /nix/store/404j9zdnl2fbyf9fgm23r2m0g4z8hs3f-home-manager-files.drv
  /nix/store/08azvrkcxd5dw6w2718mzrh474x2kjjc-hm-putter.json.drv
  /nix/store/0na7ijzzhb3m436pwd1cxx81057gmnpc-home-manager-generation.drv