these 2 derivations will be built:
  /nix/store/3ly863b3cqp72hfcs7bs8i0pq859yn0m-nixos-test-driver-pg_hashids.drv
  /nix/store/1pi7gwja0dmfwh1km331y8jnm7m923fg-vm-test-run-pg_hashids.drv