these 3 derivations will be built:
  /nix/store/2fbpq8m76nqz4cnim8dxrxpqr732x7cq-home-manager-path.drv
  /nix/store/gqkdix5q6jmhb5apzjafqy45apbzqi4w-activation-script.drv
  /nix/store/sml20lml7cmrmw2mf5v8qqxq1wsbnxf0-home-manager-generation.drv