this derivation will be built:
  /nix/store/ky4pac5l05g6snyniggzmylnxhvkaj75-bcachefs-module-7.0.0-28-generic.drv
building '/nix/store/ky4pac5l05g6snyniggzmylnxhvkaj75-bcachefs-module-7.0.0-28-generic.drv'...