these 2 derivations will be built:
  /nix/store/s59xsn6159c0h5hhbmwvh4qsdnlczq2j-nixos-test-driver-wal2json.drv
  /nix/store/2ach9c7r3r8n0wmn3njj37cg3w8kpybd-vm-test-run-wal2json.drv