these 9 derivations will be built:
  /nix/store/s67wjyfl72k44mi62m4kxfykvj6fnr0k-etc.drv
  /nix/store/zaggyz8krrl7578nn9cnvc9pyp6h6bx5-activate.drv
  /nix/store/q6rv0h1al0fd0zr1rzi5m91666kps2lr-nixos-system-server-test.drv
  /nix/store/a7gg928f1wlzhqngam444nwa4f9vjjzj-nixos-system-server-test.drv
  /nix/store/xck1bd8kdwb6dzvk4dfk97lr4b8gqcqs-closure-info.drv
  /nix/store/c7b861n0bjy64nqaivm0xdkbnrlz02yj-run-nixos-vm.drv
  /nix/store/gds90fzsg2nk8kla13bjclxfx9zwqx9r-nixos-vm.drv
  /nix/store/dkdn1f6fk5i5jh7q787w0js4d9ljir47-nixos-test-driver-pgrouting.drv
  /nix/store/q5a42h5jd21pw6x3ki7ckwdyrmsn0rcm-vm-test-run-pgrouting.drv