these 2 derivations will be built:
  /nix/store/wrfdshy909j89g220q50llvdl8lcw4x3-nixos-test-driver-pgjwt.drv
  /nix/store/4kkbr2hklwgqzcg4yqbdafif7sbk62w9-vm-test-run-pgjwt.drv