these 3 derivations will be built:
  /nix/store/qdwd6qlhfdfh0dxzfncf1g7dz38xlr7a-home-manager-path.drv
  /nix/store/xs1lkh2mxinsk1sb0b1imhw89y7p6xnm-activation-script.drv
  /nix/store/bj9k8rv1yhvfanycpra85klwlhh9abpi-home-manager-generation.drv