these 2 derivations will be built:
  /nix/store/m6jii34kng23q51zsmvld3zi3q5xqj94-nixos-test-driver-pgjwt.drv
  /nix/store/04c5s23xn8fl9m72k1n70zd3vsdg4c5g-vm-test-run-pgjwt.drv