these 9 derivations will be built:
  /nix/store/lw0dy1pvkvh8qg3xb331d58srrrbyp5x-unit-tinc-auth.service.drv
  /nix/store/qzrwrhmwn3bmq911nz3smnq64z4rmkrg-system-units.drv
  /nix/store/w7f48b5d82pnnh333m6vhajsff6vjd34-etc.drv
  /nix/store/5hybhaz84fbj4cqzb3dvz5wy6yb7wq84-activate.drv
  /nix/store/c3jxzdmgfj1gnz4a5xn51s2sbqa68m5d-nixos-system-solo-test.drv
  /nix/store/i3r82pfz6bma56a4dlcspnijh0k67pvq-run-solo-nspawn.drv
  /nix/store/mp71by8z8x991csv55k7aj9qnq10dl01-driverConfiguration.json.drv
  /nix/store/s222in5hf9wwdd94k9pc7s5vk6m6g9c2-nixos-test-driver-tinc-auth-container.drv
  /nix/store/ypc4l9hyx9s0hknlq6f9r5l94hb39q8v-container-test-run-tinc-auth-container.drv