These are python 3 programs with a couple dependencies. To install the
dependencies, first make sure you have
pip and then run:
python3 -m pip install -r requirements.txt
The i-d-template repository supports drafts written in XML or markdown. For full details see setup notes.
For XML drafts, you need xml2rfc which is written in Python. You might also need development versions of libxml and libxslt.
For Markdown, you need kramdown-rfc2629, written in Ruby, or mmark, written in Go.
Good luck with all that. See the SETUP link for useful info.