these 2 derivations will be built:
  /nix/store/2fw3yvljhglyqzk7rg00pybfbka7cj23-nixos-test-driver-pgrouting.drv
  /nix/store/5z0639x210x9ccgl150kqfcq26j3asya-vm-test-run-pgrouting.drv