HTTP server, client, tests, and examples. All required repositories are included as submodules so if you clone with --recursive you should have everything you need for building.
Building the documentation requires that Python be able to find the Dylan extensions to Sphinx.
The easiest way to do this is to check them out somewhere and put them on your PYTHONPATH
:
export PYTHONPATH=path/to/sphinx-extensions:$PYTHONPATH
You can clone sphinx-extensions with:
git clone [email protected]:dylan-lang/sphinx-extensions