these 2 derivations will be built:
  /nix/store/qms9b49b2mg0p3hvbv2mgh7sar5r0gv7-nixos-test-driver-wal2json.drv
  /nix/store/ygid55j3lblzympdwfk8qckf1cd909x5-vm-test-run-wal2json.drv