these 4 derivations will be built:
  /nix/store/rg8bbsyr3spn488mfaqh2q6dn8c21pyz-iets-0.2.0.drv
  /nix/store/gac61nwwl3irllyk27fmxid2jhlmpzr5-home-manager-path.drv
  /nix/store/k5iww7m4zvagkgzbx9dpm390mff3zrcd-activation-script.drv
  /nix/store/jgi9h3zgsa5asslcd2n8avmn9mc7w0sb-home-manager-generation.drv