these 2 derivations will be built:
  /nix/store/dpp5jidc0ndwwm0qnzn7acf8gm810af2-nixos-test-driver-pgroonga.drv
  /nix/store/fz7rq02avdaqd8mkdhqq1dxms12x5zwz-vm-test-run-pgroonga.drv