these 2 derivations will be built:
  /nix/store/s1nxxcylgf5prpjgqkw689dmj01by3cr-nixos-test-driver-pgmq.drv
  /nix/store/bgksz9vw3yfdcmf58f25n5964yf09j9y-vm-test-run-pgmq.drv