these 2 derivations will be built:
  /nix/store/afzxyyvmbhvfsl3v9zsgvzfzgjkxrqfs-nixos-test-driver-pg_partman.drv
  /nix/store/x3pv82f23hdg38xfjd5f7irhhn4d9q62-vm-test-run-pg_partman.drv