this derivation will be built:
  /nix/store/ln2h3693f4ni09257kxwfjh2fw97xi1p-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/ln2h3693f4ni09257kxwfjh2fw97xi1p-bcachefs-module-7.0.0-39-generic.drv'...