this derivation will be built:
  /nix/store/1vnxvmzlf99v9d8fkxa5sspm156p88j5-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/1vnxvmzlf99v9d8fkxa5sspm156p88j5-bcachefs-module-7.0.0-39-generic.drv'...