these 3 derivations will be built:
  /nix/store/rvk5axicmynw73nfsfck2883nq1q7hv8-home-manager-path.drv
  /nix/store/yzx2qxw0fy1sbkbd1vqmkb01k3rg9v9h-activation-script.drv
  /nix/store/fc7gvpw35xldmbln0i9rizqdhpzwd1i6-home-manager-generation.drv