these 12 derivations will be built:
  /nix/store/3f9mj88jjb5yj9ilclm54b5q7n88fjfa-init-old.drv
  /nix/store/qawyj9f1lg494acvns45vxjxcd8zddvz-unit-postgresql.service.drv
  /nix/store/q0dw0mi6052pxwz63wqddf3dha7j09zn-system-units.drv
  /nix/store/36wyrl5bbgcf9pchpfmfkilmg4pvcmhk-etc.drv
  /nix/store/13gm4016zzb6vwkv9ivimpfz68r1lqak-activate.drv
  /nix/store/8q4kl3wlll8zsi3x3hw8rk340qzfd69a-drive.drv
  /nix/store/yzbxgsbpgx6h7rjyrz2ndwxnm5mwz34p-nixos-system-server-test.drv
  /nix/store/z1iy881gsi0cgqq4gid7278jydi22vlx-closure-info.drv
  /nix/store/nxa20h09pdn861gbm9djpmjrx18va5wq-run-nixos-vm.drv
  /nix/store/wi8jf93fxp36rnnq5dcvvdjb2p05vfjg-nixos-vm.drv
  /nix/store/cdff0r1293xb4xfybasnd0rbrn71kvrk-nixos-test-driver-pg-upgrade-start-guard.drv
  /nix/store/4dwkrd1v1nv3x19bqy1phsl0ln34yw2b-vm-test-run-pg-upgrade-start-guard.drv