these 2 derivations will be built:
  /nix/store/hqcxzd712prncg7dcgqjjlwg9711hdz6-nixos-test-driver-wal2json.drv
  /nix/store/p68icm97vmvfk8pff7qba3vlr1air6vd-vm-test-run-wal2json.drv