these 2 derivations will be built:
  /nix/store/385xpa1s5hr4cyfcbmjkmzp353dvs1g2-nixos-test-driver-pgjwt.drv
  /nix/store/85yqb2i1v0v8j36r3xnah1qr272jn08v-vm-test-run-pgjwt.drv