these 2 derivations will be built:
  /nix/store/l8fvznc4fbwh308jk8vyi9m3gdxxn9y0-nixos-test-driver-hypopg.drv
  /nix/store/gjigh2fa2fbcgrnzdhd6q6yfnkszdfdf-vm-test-run-hypopg.drv