these 2 derivations will be built:
  /nix/store/hyhw9afg1v8f8fqvrg9xnbvlh559zz8l-flake-inputs.drv
  /nix/store/x7n9b2c6pna2qzcqhi9a01p2kq0xb6fz-check-flake-inputs.drv