option to disable file_packager stage ?

[pmp-p]

Maybe the right place to ask is https://bugs.python.org/issue40280, but is there a option to disable the emscripten file packaging stage ( but not filesysem support )?
Because when using external compressed filesystem like e.g. those BrowserFS provides, it builds a bigger .data than the minimum wanted.

i think --preload-file comes from here https://github.com/python/cpython/blob/c27a33132be101e246ae2584f1826477357138d6/Makefile.pre.in#L92 originating from https://github.com/python/cpython/blob/ffa505b580464d9d90c29e69bd4db8c52275280a/configure.ac#L1845

maybe ideally the .data should only contains importlib and coldstart requirements, so the stdlib big chunk download can be defered, or handled by a third party. see pyodide/pyodide#646 (comment)