these 8 derivations will be built:
  /nix/store/1455h8sh2hj7jdzm2j75z1ksxdmkvl4w-nixos-system-server-test.drv
  /nix/store/bqwyjg90fa5fcd6vyrj306hgk096q2ps-closure-info.drv
  /nix/store/2bqnvdws7rbisk9c3lrx7yg9dkmxvisi-run-nixos-vm.drv
  /nix/store/pss6nvvwyrvx9k263a6jgkia6dz5w2bj-test-script.drv
  /nix/store/sfj935yhz5im8dqwgmhi2rgkp9dkfgmj-nixos-vm.drv
  /nix/store/7niz49fdd9n5n42ssry5gxxz7s6s4azh-driverConfiguration.json.drv
  /nix/store/v0g6vg85i1bc66pkd7i24w8hl7xlv9w0-nixos-test-driver-pgroonga.drv
  /nix/store/k5g4qvnw51nvkc7nayly6finiw2flsz4-vm-test-run-pgroonga.drv