these 2 derivations will be built:
  /nix/store/x1vhj6qyr86cx9hh8gxbg6z04v0qwfg8-nixos-test-driver-pgmq.drv
  /nix/store/jz3l9vvpyf0g08dgp4sw0ncn8006zxqq-vm-test-run-pgmq.drv