these 7 derivations will be built:
  /nix/store/aclw5qbr34mbpfflvi2b4dcw4j8z7y9a-unit-postgresql-setup.service.drv
  /nix/store/f5hsbm126wr500kxi2faanynr2bck3c3-system-units.drv
  /nix/store/dpf3jnkiq6z6h94aqa0ad1xmzdh48kkc-etc.drv
  /nix/store/4cj0nj5jn1ymqzzxqxz35030ci8y5mh5-nixos-system-server-test.drv
  /nix/store/5id2230nxxhrn5bciqszcjsrh3mmav91-nixos-system-server-test.drv
  /nix/store/1n27pl02hp6ldas4g9r9ayfrwf4jniwp-nixos-test-driver-pg_stat_monitor.drv
  /nix/store/gf57pww9i52v2kii6p85yk137v32wn8l-vm-test-run-pg_stat_monitor.drv
these 9 paths will be fetched (79.2 KiB download, 498.8 KiB unpacked):
  /nix/store/azqhk3z1f66j3qpb9jb56306488gf50w-activate
  /nix/store/kiwkcs2v5zxjqn5pjya7f1ffdl27sp82-closure-info
  /nix/store/v7gcphjq5s5syp6b2hdlrl6snwxz3jfa-etc
  /nix/store/lypxymds0rqn337pw1zynsrihvxwzkvr-nixos-system-server-test
  /nix/store/vmgcirkrd04nzpwn6y9clf33002q48b5-nixos-system-server-test
  /nix/store/kfyfv5yfq0iw3738nyiidvsr6rq0hhdr-nixos-vm
  /nix/store/dz4vyl0cw91iwkjdfz9h6iv347fl338s-run-nixos-vm
  /nix/store/d9l0w2wry7z0ms5iysvz6jl2mrwm37w1-system-units
  /nix/store/iyw0qkq4brwlawmyqivbqm4yqa5b08dx-unit-postgresql-setup.service