Jupyter-book: ContextualVersionConflict with parso version when building

[MaxGhenis]

Describe the bug

When building after updating all my pip packages, I get this error:

pkg_resources.ContextualVersionConflict: (parso 0.8.1 (/home/mghenis/anaconda3/lib/python3.7/site-packages), Requirement.parse('parso<0.8.0,>=0.7.0'), {'jedi'})

Here's the full output.

The book was building fine before updating packages.

To Reproduce

Steps to reproduce the behavior:

1. Update all pip packages: pip list --outdated --format=freeze | grep -v '^\-e' | cut -d = -f 1 | xargs -n1 pip install -U
2. jb build in folder

repo: https://github.com/UBICenter/blog/

Environment

• Python Version [e.g. 3.7.1]: 3.7.9
• Package versions or output of jupyter-book --version:

Jupyter Book: 0.9.1
MyST-NB: 0.10.1
Sphinx Book Theme: 0.0.39
MyST-Parser: 0.13.0
Jupyter-Cache: 0.4.1
NbClient: 0.5.1

• Operating System: Ubuntu

[MaxGhenis]

pip install "parso<0.8.0" fixed this

[chrisjsewell]

Heya, what version of pip are you using?
This may be fixed with new pip resolver: https://pyfound.blogspot.com/2020/11/pip-20-3-new-resolver.html?m=1

[MaxGhenis]

I think I was already on the latest:

(base) mghenis@penguin:~/UBICenter/blog$ python -m pip install --upgrade pip
Requirement already satisfied: pip in /home/mghenis/anaconda3/lib/python3.7/site-packages (20.3.3)

[chrisjsewell]

Ok cheers that's a shame, note you can also use pip check after updating your environment, which should highlight any version inconsistencies

[choldgraf]

Hmm, we should figure out what is the dep that’s pinning parso. Is it Jedi?

[MaxGhenis]

Hmm, we should figure out what is the dep that’s pinning parso. Is it Jedi?

Think so based on the error:

pkg_resources.ContextualVersionConflict: (parso 0.8.1 (/home/mghenis/anaconda3/lib/python3.7/site-packages), Requirement.parse('parso<0.8.0,>=0.7.0'), {'jedi'})

[MaxGhenis]

Per https://github.com/davidhalter/jedi/issues/1650, this was fixed in https://github.com/davidhalter/jedi/releases/tag/v0.18.0 released this morning. I just verified this by updating jedi and parso and running jb build successfully.

[choldgraf]

Ah perfect, thanks so much for following up @MaxGhenis