these 2 derivations will be built:
  /nix/store/rpjmk23czkky240k0dkw59qljbj8rr5k-nixos-test-driver-pgrouting.drv
  /nix/store/r1598yll0lymxxijjf9dv6bcn4map8xk-vm-test-run-pgrouting.drv