these 16 derivations will be built:
  /nix/store/3fkgaffca8rq2s6g9ymps0hsd2yymsjj-user-units.drv
  /nix/store/b5qgbihrc2mmaprpgdhysrch05f2560v-system-units.drv
  /nix/store/xzwyzmlyana5npl7ayklaidz9qg3c0jn-etc.drv
  /nix/store/g57zkra8vwlchylb9qglcqch5bm9fkzl-activate.drv
  /nix/store/m96dk6sv6v9shafddn66p0f0qdh1rxvr-nixos-system-server-test.drv
  /nix/store/frvdf9yxc96z0nhclqlshqvy6ipsy1kx-system-units.drv
  /nix/store/sq2pz8hyigh1bwxr3yj7amg3jwqdwbjq-user-units.drv
  /nix/store/lxcv7jglg1nx655rsyi12wfg8qnjna1v-etc.drv
  /nix/store/c11m6263hhdz9w6s4z27fli52z71hnz4-activate.drv
  /nix/store/vbarq0ydyf2sqnycdmbh5vkff3wkpf64-nixos-system-server-test.drv
  /nix/store/l4rxj9hgrhwm4r3q3mvy3yk290s6z8mm-nixos-system-server-test.drv
  /nix/store/bqm9b4xa4vlglgxrkhjn51ydxgysa0x2-closure-info.drv
  /nix/store/ys9sf2dim351j28hpryapki808avaijx-run-nixos-vm.drv
  /nix/store/ldqsvmdkp2hv3wl162gxyghz62fkkvnp-nixos-vm.drv
  /nix/store/xmq86il7650rhpjr1m7fyjrns7qdf4sm-nixos-test-driver-pgrouting.drv
  /nix/store/42hq11pm73v0cwwil2yjjbc1b5glfn87-vm-test-run-pgrouting.drv