these 5 derivations will be built:
  /nix/store/wh1gwxflccxxhnvj2cb8hv5i7xkl07s8-closure-info.drv
  /nix/store/lfpdpqx8swhk4whvlh8gmkaflqw08ahd-run-nixos-vm.drv
  /nix/store/w5y67sgh34vfzd215qvnfzw08xs8jqm9-nixos-vm.drv
  /nix/store/71f50miazxdsdx2m95w6rig6z4n2djkq-nixos-test-driver-pgrouting.drv
  /nix/store/3gypp1zdmjg4mp76072c3ksnxbnkna19-vm-test-run-pgrouting.drv