this derivation will be built:
  /nix/store/9p6xd6p9jwhg0x5s7c0vmjw37canpq6w-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/9p6xd6p9jwhg0x5s7c0vmjw37canpq6w-bcachefs-module-7.0.0-39-generic.drv'...