this derivation will be built:
  /nix/store/i98zylwzzn9mz31giv16m72grrnfi6hg-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/i98zylwzzn9mz31giv16m72grrnfi6hg-bcachefs-module-7.0.0-38-generic.drv'...