Allow changing of sidebar navigation depth

[timostroehlein]

It would be great if we would be able to specify a custom depth for the navigation sidebar. Currently it only shows the first two levels, showing any deeper levels does not work. It should basically work like the navigation_depth option in the PyData Theme

[lepture]

https://shibuya.lepture.com/customisation/sidebar/

Does globaltoc_expand_depth works for you?

[timostroehlein]

Sorry, I thought I found the issue but I was only able to partially solve it. It seems like the navigation depth in the sidebar is dependant on the toctree maxdepth

.. toctree::
   :maxdepth: 3

This isn't really ideal, since we always want to show the full navigation depth in the sidebar, but on the page itself we also want to show the toctree, but with a different maxdept. So my suggestion above still applies, it would be great to have a separate property which defines the sidebar navigation depth

[timostroehlein]

https://shibuya.lepture.com/customisation/sidebar/

Does globaltoc_expand_depth works for you?

No that doesn't really work, it will ignore the setting if the toctree depth of the root index.rst is set to 1 for example. What I need is a setting which basically ignore the toctree setting of each page