these 2 derivations will be built:
  /nix/store/ag3pw6f5blyxz6cd6q7pwyw4bqz5if34-nixos-test-driver-pgjwt.drv
  /nix/store/xjzyqs4k3mlzkq5aw6hr325ngi9kzyy8-vm-test-run-pgjwt.drv