these 4 derivations will be built:
  /nix/store/102azgrxz4w3dnmh7pm0v9z35xrpaq4l-system-units.drv
  /nix/store/p6k07lpg4bv6nas4cm9gpq8i3pscj6vb-etc.drv
  /nix/store/8c2q0i2v2f52r1rbyb37pb62hxfsw2wb-activate.drv
  /nix/store/7p4mzijhhl1m1x0lya3ll6b93d8kxlw6-nixos-system-prefect-26.11.19800101.70ce234.drv