these 2 derivations will be built:
  /nix/store/c2d5rfbjf72cqgc9vhhffk62s4550i4r-nixos-test-driver-pg_partman.drv
  /nix/store/745w07prmvkjc1scbbkc7ng4mq2smrqx-vm-test-run-pg_partman.drv