these 2 derivations will be built:
  /nix/store/qbphkz0v1ml5zwzqksn2yqxkrg10xcjr-nixos-test-driver-hypopg.drv
  /nix/store/fkhd5jm808b3gpvnacd6rwkaflmywvkp-vm-test-run-hypopg.drv