these 8 derivations will be built:
  /nix/store/szl6v9j136qd5xkjn7qh6gv0vfih3p1h-system-units.drv
  /nix/store/55rb07xn13ld2760lgx0ll3jny210kga-etc.drv
  /nix/store/bhganyq4p807zxkgx14rla16xhwnjm83-activate.drv
  /nix/store/n3ppsy2y29k0szgxqmw2xkf4p4amp0hs-nixos-system-solo-test.drv
  /nix/store/lifzr57bdi7snzs24nhyxdc0lpkr5hpw-run-solo-nspawn.drv
  /nix/store/3slh1mlw2mp783hxh7ddj7b2mdcrdncm-driverConfiguration.json.drv
  /nix/store/55phw35pgx5fwny42grc6fx6awph4q21-nixos-test-driver-tinc-auth-container.drv
  /nix/store/wcyr9vsvvzgsz39zfj0fxh5ckcpp37ah-container-test-run-tinc-auth-container.drv