these 12 derivations will be built:
  /nix/store/1sx8nk3qljrmhhfzrzn1xky679kr7pi0-init-old.drv
  /nix/store/6xxzg4p26rpjclis1159wdyrnq8kaxc4-unit-postgresql.service.drv
  /nix/store/wf51gkjn8a08b4pkay3469l8lgyf7sm3-system-units.drv
  /nix/store/567pkl9w7cvln17pmx2icm29jgrvxs0f-etc.drv
  /nix/store/k0cypdjl44rdzjlgzvqpfqicmjl83z9k-activate.drv
  /nix/store/88djhrx1cc20nv5x27jfz85lzqkacasj-nixos-system-server-test.drv
  /nix/store/ypp3jpxw2fbsn8kzcrm4fcm50pqpgskb-closure-info.drv
  /nix/store/ikry68gvila8vg5ygfpnjbhpzj3cj936-run-nixos-vm.drv
  /nix/store/9z8n4ybmx8lhlx3lmagq0fmfw0slh0cr-nixos-vm.drv
  /nix/store/p0swynlglk6448ha67xja09781rhp95m-drive.drv
  /nix/store/bphpvsrb2i5a9mx2c4wc8fksaf3nbxkb-nixos-test-driver-pg-upgrade-start-guard.drv
  /nix/store/1035gl6krvh4iln7v7pmbwaq69rmyb00-vm-test-run-pg-upgrade-start-guard.drv