this derivation will be built:
  /nix/store/w9mfbhp546di9rm1dkizxng8lp4lwx3k-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/w9mfbhp546di9rm1dkizxng8lp4lwx3k-bcachefs-module-7.0.0-38-generic.drv'...