these 2 derivations will be built:
  /nix/store/zr3hcl1gx5wvkybvxhvb81xpcyb15ap9-flake-inputs.drv
  /nix/store/f5c9lfbcgn4hqmqcdbfl2nxjz16v92z3-check-flake-inputs.drv