these 4 derivations will be built:
  /nix/store/9ivjqjv8qkzr749i0ylwfrz341q3r7c9-nix-tree-0.1.0.drv
  /nix/store/4z7f4r69im1l2lkcjjb4im210gsfs3r5-home-manager-path.drv
  /nix/store/m20vbjjj5sglr5jr2iihzmdx904625wk-activation-script.drv
  /nix/store/jd2ww8l2g9vjsbiv8jcz2bhpb8vp0f77-home-manager-generation.drv