these 2 derivations will be built:
  /nix/store/q0a8g8z00dfbl9ngfn7kmshvsz1zlpjm-nixos-test-driver-pg_hashids.drv
  /nix/store/bfiqlp98b0zbzidj4dicgb4wfya7xxvr-vm-test-run-pg_hashids.drv