this derivation will be built:
  /nix/store/saahzwlkdaa4fknv673q77g9facfmxx3-bcachefs-module-7.0.0-38-generic-64k.drv
building '/nix/store/saahzwlkdaa4fknv673q77g9facfmxx3-bcachefs-module-7.0.0-38-generic-64k.drv'...