these 2 derivations will be built:
  /nix/store/9f2fq1wfmjgn4qr3hxrlgzpxnlh1mxz7-flake-inputs.drv
  /nix/store/jlidwaihyw4j12x1qy2i8cw6f7q6k5pr-check-flake-inputs.drv