these 13 derivations will be built:
  /nix/store/7galkl9g75f00hvp528wqkck0zisk2yy-unit-postgresql.service.drv
  /nix/store/qcspwphdr7f3cxfnmpc8kc08hi387k81-postgresql-migrate.drv
  /nix/store/bm8m8cd9iz7wz9hgksbcgd9d0dhlx7n3-unit-postgresql-migrate.service.drv
  /nix/store/xs4l0vn4aihgzd5nl1b08b7a9wnl2d71-system-units.drv
  /nix/store/kb2ffz4fwwh13q58fwyf0869745vfv93-etc.drv
  /nix/store/ilaq2jsajy1lqs7x6h128hg5rigcs6dk-activate.drv
  /nix/store/sz3h5ia1k2qdzy6cwy185vjrwk30z41r-nixos-system-server-test.drv
  /nix/store/7agrxvg8w04y7bhqd4457dyrf3ix570m-nixos-system-server-test.drv
  /nix/store/k9cc6g003zjgahc540qbsl4nbr6s637q-closure-info.drv
  /nix/store/lzwr30chi1i9ychblik1df8n1p3vvqwp-run-nixos-vm.drv
  /nix/store/zlna3mfywmghqp9vbp5j7xhdpb6l40ym-nixos-vm.drv
  /nix/store/5dhkqyqgz6rlxn90mmndbjnnjynjqxbh-nixos-test-driver-amcheck-upgrade.drv
  /nix/store/2v2pmjhr36k6d1c092hj3i9dpzffn7cc-vm-test-run-amcheck-upgrade.drv