these 2 derivations will be built:
  /nix/store/7plp441dbgbwk0xhgwv09s6f5qal22qp-nixos-test-driver-hypopg.drv
  /nix/store/k8513xpfxczh7fhhpw8s13fcz2ir9yw7-vm-test-run-hypopg.drv