this derivation will be built:
  /nix/store/5mbcvqx5h6x3196hvn307s96iwlwq5zn-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/5mbcvqx5h6x3196hvn307s96iwlwq5zn-bcachefs-module-7.0.0-39-generic.drv'...