these 6 derivations will be built:
  /nix/store/78zd9q8a8cw44aqxpxwgadkp7ng05hr7-nixos-system-server-test.drv
  /nix/store/9mbjp0fhk555d8dpcxyq183a6c7jdvwk-closure-info.drv
  /nix/store/1sgmric0zblslrxhqg1lzwlm3kd8q004-run-nixos-vm.drv
  /nix/store/pxq9174cqaq4qsfr4a4cqbzywrwai3mx-nixos-vm.drv
  /nix/store/fd9vylf9nam7w065z0jgzmlb1fv0l0s6-nixos-test-driver-pgmq.drv
  /nix/store/jpxkyf9lr17k7cxc296d8hhkiqnn75f8-vm-test-run-pgmq.drv