these 2 derivations will be built:
  /nix/store/7j9wdar4rhghwpn4ijnw6ydsi7z7w5hm-nixos-test-driver-hypopg.drv
  /nix/store/247qzp8znvzvdp6mmrhih0ncbivcsp6f-vm-test-run-hypopg.drv