Support for Git submodules

[gmgunter]

Thanks for this nice tool!

I noticed that erroneous inconsistencies seem to be reported when the project contains Git submodules.

$ git clone https://github.com/isce-framework/snaphu-py.git
$ cd snaphu-py
$ pipx run check-sdist
[...]
SDist does not match git

SDist only:


Git only:
  ext/snaphu

In this case, ext/snaphu is a Git submodule whose contents are correctly included in the SDist, but git ls-files doesn't list them -- it only prints the top-level submodule directory name.

This could be resolved by adding the --recurse-submodules flag to the git ls-files command (requires Git >=2.11.0). Is that something you'd be interested in adding?

[henryiii]

Sure, that was the main issue holding back "1.0" IMO.