Basic instructions do not work

[kiteloopdesign]

Describe the bug

context
Apologies if I am missing something gross but I do not see how at the moment, as the issue is pretty straight forward. I am doing the following to install sphinx-comments for development

git clone https://github.com/executablebooks/sphinx-comments
cd sphinx-comments
pip install -e .[testing,sphinx]

expectation
It installs the sphinx extension and dependencies

bug

I get this error:

pip install -e .[testing,sphinx]
Defaulting to user installation because normal site-packages is not writeable
Obtaining file:///home/USEREDITED/projects/sphinx/sphinx-comments/sphinx_comments
ERROR: file:///home/USEREDITED/projects/sphinx/sphinx-comments/sphinx_comments does not appear to be a Python project: neither 'setup.py' nor 'pyproject.toml' found.

problem

Obvious, nothing is installed. It look a bit weird to me that the only available file is a __init__.py and no requirements.txt ? is this expected?

Thanks

Reproduce the bug

git clone https://github.com/executablebooks/sphinx-comments
cd sphinx-comments
pip install -e .[testing,sphinx]

List your environment

No jupyter book installed
Fedora 35
Python 3.10.8

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