this derivation will be built:
  /nix/store/qb81v1vvgm01dpd1fyqy4172mg7zv7qb-bcachefs-module-7.0.0-27-generic.drv
building '/nix/store/qb81v1vvgm01dpd1fyqy4172mg7zv7qb-bcachefs-module-7.0.0-27-generic.drv'...