these 2 derivations will be built:
  /nix/store/giy8nmz2n9gb6dnqqjxv280jdrrcmh3f-nixos-test-driver-pg_hashids.drv
  /nix/store/w6ixjmyh6285xgh638x0n149why9pw1w-vm-test-run-pg_hashids.drv