these 2 derivations will be built:
  /nix/store/v941b6r761l47ipvdn5v5s8k4fggfrwj-nixos-test-driver-wal2json.drv
  /nix/store/anv5by4sslnag378pzsj1ahnkkgp6907-vm-test-run-wal2json.drv