these 2 derivations will be built:
  /nix/store/kr6x80v5ixd4fhv2n961vvbdhd2m3am0-flake-inputs.drv
  /nix/store/jnk5vfg6p1aqkaf5xh8ckpf6wjhlg45p-check-flake-inputs.drv