these 2 derivations will be built:
  /nix/store/ffpwafl4mb4mjzs4sjxc7ryx20r5sg32-nixos-test-driver-wal2json.drv
  /nix/store/jkx17gr1isl0qj39s8ni762zdj1fh15r-vm-test-run-wal2json.drv