these 2 derivations will be built:
  /nix/store/1w2pkk9zzj15j2krbi64qfi3pargscsa-nixos-test-driver-pgmq.drv
  /nix/store/52lyd88mvqxic9qkrb9xj3iyzrv2v6bb-vm-test-run-pgmq.drv