these 12 derivations will be built:
  /nix/store/2a1z0wkvip11gpgrqyjkxqqhn9k3ll5a-stage-2-init.sh.drv
  /nix/store/7b3rsqh0igdh4svmq6pbrsixsgi9l1sk-boot.json.drv
  /nix/store/klpbhfqpa80dd741jb3by0419j5l2fj5-builder.pl.drv
  /nix/store/jp37i1pvjvk5j16jm29k3vml1hlhmlwx-perl-5.42.0-env.drv
  /nix/store/5gkg3dzzv86ywr9lqzsxxzagky85iypy-nixos-system-server-test.drv
  /nix/store/avf67l0mggqldqx1khi7gb7zx6wlacjx-nixos-system-server-test.drv
  /nix/store/y0h1vq8kyh3yn9p96hcjwmlqf641498a-nixos-system-server-test.drv
  /nix/store/nlc7mxy429hdhvqff2bn5zw8xcv710jv-closure-info.drv
  /nix/store/57nx2fvkp2dcy6s8y3wr47g91i709v74-run-nixos-vm.drv
  /nix/store/2hfs9dwki7sz46wmagipcfzj1v1d2pwb-nixos-vm.drv
  /nix/store/pcg6hcw4ws0fg5wxhgwa6sbs569kc675-nixos-test-driver-pgrouting.drv
  /nix/store/372i87agwm486c7wj2f4h28inlg51kkv-vm-test-run-pgrouting.drv