these 3 derivations will be built:
  /nix/store/jm4n9g8an60fc8vwr6smcv3xx676xz61-home-manager-path.drv
  /nix/store/ldnabx3w7j3bmh1l4lpjx1v6dcdq19f6-activation-script.drv
  /nix/store/7g5r6xby913jqqf1nzbr5qf6kwxw2hpa-home-manager-generation.drv