these 2 derivations will be built:
  /nix/store/pp90f9r1p3b23d0crw6h5nw75iggkk3y-nixos-test-driver-pgmq.drv
  /nix/store/x1gszhvr0mbqqhmc7m93q25m3dxpf7ng-vm-test-run-pgmq.drv