this derivation will be built:
  /nix/store/6wz4cgycqgjjvsr4dbwldd90shwy938g-vm-test-run-pg_cron.drv
this path will be fetched (3.9 KiB download, 16.6 KiB unpacked):
  /nix/store/1g22a6ff0ysmzfmc5hd2m6byp7hm1yhs-nixos-test-driver-pg_cron