this derivation will be built:
  /nix/store/v2y506khnys6arsfyinnzgdaxxcp125y-vm-test-run-pgtap.drv
this path will be fetched (3.9 KiB download, 16.5 KiB unpacked):
  /nix/store/zqdz12yazdh9r8zmmfrb9cq86cavfkm6-nixos-test-driver-pgtap