this derivation will be built:
  /nix/store/39rdblhzh8kmbzyigynjp4fkl7dprhzv-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/39rdblhzh8kmbzyigynjp4fkl7dprhzv-bcachefs-module-7.0.0-38-generic.drv'...