this derivation will be built:
  /nix/store/mjlzq8h8jx84d4nbvs8ps1dh6x9il5wa-bcachefs-module-7.0.0-30-generic-64k.drv
building '/nix/store/mjlzq8h8jx84d4nbvs8ps1dh6x9il5wa-bcachefs-module-7.0.0-30-generic-64k.drv'...