these 6 derivations will be built:
  /nix/store/nn941bgcph3lvf18qzsp5mqvdvv0y4bw-nixos-system-server-test.drv
  /nix/store/50c0j27c0wf14gqpxzycflh5kyv2s5hw-closure-info.drv
  /nix/store/5hbxy9wqb5vkqg2i7npq9hd6m8pvxjiw-run-nixos-vm.drv
  /nix/store/94hznhy37p3r2izzh5ldsc5dbpibz5q2-nixos-vm.drv
  /nix/store/0qqgjsjlyy7l2m83y7dp5a8hw0gnprgr-nixos-test-driver-plv8.drv
  /nix/store/6237jrgalhrgdbmas95xwmx06js2vkxb-vm-test-run-plv8.drv