Conflicting dependencies with nbformat

Full disclosure, I haven’t looked too deep into this yet. But I keep getting strange dependency errors when trying to use nbformat as a dependency with nox-poetry.

ERROR: Cannot install debug-nox-poetry==0.1.0 because these package versions have conflicting dependencies.

The conflict is caused by:
    debug-nox-poetry 0.1.0 depends on nbformat<6.0.0 and >=5.1.3
    The user requested (constraint) nbformat==5.2.0

No complaints from Poetry itself when creating the lockfile. Also I can pip install the package python -m pip install . Similarly it works as expected if I use nox.session instead of nox-poetry.session.

Minimum reproducible repo here:

https://github.com/paw-lu/debug-nox-poetry

[paw-lu]

Suddenly, I also can’t reproduce on my machine. Running the same commands as seen in the orignal recording results in a success.

Also set up an action on Ubuntu—which also succeeded.

I’m going to close for now and then reopen if I can get something more reproducible. Sorry for the noise!

[cjolowicz]

Thanks for reporting! Should running nox in a clone of that repository reproduce the error? It doesn’t for me.