these 2 derivations will be built:
  /nix/store/4b75y7yd27aprdakssds2awh93b0lsag-nixos-test-driver-pgjwt.drv
  /nix/store/rp56xfdmxxlkypr82gfvlq3hkznv3dh5-vm-test-run-pgjwt.drv