this derivation will be built:
  /nix/store/bvi72aki2qzwzd86nrgnkwp9hy4jbq7c-vm-test-run-pg_cron.drv
this path will be fetched (3.9 KiB download, 16.6 KiB unpacked):
  /nix/store/l0ys5843pwdz32kksy90azfyilx2xm24-nixos-test-driver-pg_cron