these 2 derivations will be built:
  /nix/store/gvp4s071alvhb8xqc6ffsw77cz0fmnvd-nixos-test-driver-hypopg.drv
  /nix/store/kh9n5zh7sj28ji6vyn4rw52m4z09y8as-vm-test-run-hypopg.drv