these 3 derivations will be built:
  /nix/store/8rvlf9313a779rckpvkz627dw69p2ifl-home-manager-path.drv
  /nix/store/6d37iyvq21snyyrnimc8mmfck6j450xd-activation-script.drv
  /nix/store/pk1mdk5nz5alvns8j1jjnv5ckrqs1a6r-home-manager-generation.drv