these 2 derivations will be built:
  /nix/store/3pwik85nbahw5xrw5abzvnd2s7day6vk-nixos-test-driver-pgmq.drv
  /nix/store/h81hgqyfahgl5m3ckzdq3maxmvkyfh8n-vm-test-run-pgmq.drv