these 12 derivations will be built:
  /nix/store/dccjl99l6qlhc3nfhc3gaiwzipm85yz7-init-old.drv
  /nix/store/0l9myja57rjiad445s534hphx78s61nv-unit-postgresql.service.drv
  /nix/store/9qfkwa1271zf94mdb6abifzry8jfa6pm-system-units.drv
  /nix/store/3cg56ildv04b36inripkw7ccs0wq5zpm-etc.drv
  /nix/store/i488rbprnjjpvabgrbdnd999aw4wsr7g-activate.drv
  /nix/store/2mlhpavi281gjv4ffgr9pj38gy0ngspn-nixos-system-server-test.drv
  /nix/store/hpibrxpxzkgzn3vy1fmrfs9n19m3rmzp-closure-info.drv
  /nix/store/x00a58h793vmd0i7vsb3h8ry1dvxdj3c-run-nixos-vm.drv
  /nix/store/d22bby24yq7w15w23lv8y671266x45xi-nixos-vm.drv
  /nix/store/np7xrnajhp3qsdji6lrrqpjhmmg2dgkl-drive.drv
  /nix/store/hryh89872hadc9hccifmixywsrk20sm3-nixos-test-driver-pg-upgrade-start-guard.drv
  /nix/store/vra2vkin0vw16j7nm63vj6kp9qx0c5cf-vm-test-run-pg-upgrade-start-guard.drv