this derivation will be built:
  /nix/store/rfrn83chiab7lz2jf5zvqyjw1mg9zm24-bcachefs-module-7.0.0-34-generic.drv
building '/nix/store/rfrn83chiab7lz2jf5zvqyjw1mg9zm24-bcachefs-module-7.0.0-34-generic.drv'...