Sphinx with Submodules

This project shows an example of using a Sphinx documentation project with Git submodules.

Here's a few notes:

• Sphinx cannot include documents from directories above its source directory. So you can't include documents from the common submodule directly with the toctree:: directive. Instead, you must include documents from the source directory, and those can use the include:: directive to include files from higher level folders.
• The Read the Docs configuration file (.readthedocs.yml) can include all submodules in the build or it can include or exclude a subset.
• In this example, the common submodule contents (common/ in this example and controlled in .gitmodules) are not copied by Git into the Sphinx source directory (source/). This way not all the common sources are included in the Sphinx build output.