these 4 derivations will be built:
  /nix/store/k31k74hgh50s6ps6p3ddql198dwjm8pr-test-script.drv
  /nix/store/kq1b843xgryx8n5npl2v4k24570cnz35-driverConfiguration.json.drv
  /nix/store/2n4pwzc3z43897yvl3jjdbhx06rxshqm-nixos-test-driver-pgrouting.drv
  /nix/store/cl854ggb9b0cqwspqfcqgds2lmdlrqpc-vm-test-run-pgrouting.drv