this derivation will be built:
  /nix/store/famkfalr0g0yyx5l0w6lfm71g3fcagfy-vm-test-run-pg_cron.drv
this path will be fetched (3.9 KiB download, 16.6 KiB unpacked):
  /nix/store/idjyn8yz72prv94pacg31rfzv1mwm9zz-nixos-test-driver-pg_cron