this derivation will be built:
  /nix/store/7wlnn81cz4k8a68z15s06jx2c132hr2q-bcachefs-module-7.0.0-30-generic.drv
building '/nix/store/7wlnn81cz4k8a68z15s06jx2c132hr2q-bcachefs-module-7.0.0-30-generic.drv'...