Including submodules (recursively) in the source tarballs corresponding to a release

Hi!

This is a feature I've been wanting from GitHub forever, but I was wondering if it's possibly within the ecosystem of `cargo-dist`. Basically, when I tag a release and `cargo-dist` generates the relevant artifacts, is it possible to have the associated source tarballs include, recursively, the submodules in my repo? Right now this isn't the case (same with the tarballs GitHub provides as well), and so the program isn't able to be compiled from just the source tarball accompanying releases. However, I'd like the release tarballs to be "stand alone" and capable of being built directly.

Is such a thing possible? If so, how might I go about it?

Thanks!
Rob

Start by tracing cargo-dist's release artifact generation and how source tarballs are assembled. Investigate whether Git submodules can be included recursively, then verify that a generated tarball contains the required submodule contents and builds independently from the archive.

Written by the indexing model from the issue text.