these 2 derivations will be built:
  /nix/store/rdl8rcbzv0ng2y847s7kkccwfbxqzx27-nixos-test-driver-pgmq.drv
  /nix/store/56ah3wpipgzfchyyg5bqh2fn3hkak397-vm-test-run-pgmq.drv