these 3 derivations will be built:
  /nix/store/xxx0zdrsdpq17adg0x1dnbl6xgc4ib2k-home-manager-path.drv
  /nix/store/zq4i86rcxdfy4xqs9wiy5rarbf7nxwgl-activation-script.drv
  /nix/store/iz0ypqxv3n5j4icdbrkdbzsd1d7cpp74-home-manager-generation.drv