these 2 derivations will be built:
  /nix/store/dqqs0bh6xh4i9c4l1xgzazmqh5ncv7z9-flake-inputs.drv
  /nix/store/l01kz9zz0s96n9a4j5hal8ydp7y8z9d1-check-flake-inputs.drv