these 2 derivations will be built:
  /nix/store/5gh3w1sh8knqa0bvgpwxvyb5gh73aphh-nixos-test-driver-pgjwt.drv
  /nix/store/b5pjipki6rdf6pcix08frmrhc6zfabp6-vm-test-run-pgjwt.drv