these 3 derivations will be built:
  /nix/store/7p3yybhfvaf2g3kck5zckf9sgr74s0zi-home-manager-path.drv
  /nix/store/7jbqzq31kr8fr9ha4x2aranc7dg65qbj-activation-script.drv
  /nix/store/flw3gk7f0q3l3rnsl5csdryi5gavyjhn-home-manager-generation.drv