this derivation will be built:
  /nix/store/l8v67jam2h83dj03fkzgbl761xqlggz6-bcachefs-module-7.0.0-31-generic-64k.drv
building '/nix/store/l8v67jam2h83dj03fkzgbl761xqlggz6-bcachefs-module-7.0.0-31-generic-64k.drv'...