ENH: Improve readability of LaTeX (tex) for author customization

[mmcky]

Description / Summary

The current latex/pdflatex functionality of jupyter-book enables building pdf files via LaTeX compilation for books. However some authors would like to have more control over the LaTeX process and it would be helpful to have a more readable intermediate tex file.

Value / benefit

Enables author's more control over the compilation phase when building latex -> pdf

Implementation details

We currently make use of sphinx-jupyterbook-latex to alter the sphinx abstract syntax tree using transforms and post-transforms to enable building via the default sphinx LaTeX writer. This is coordinated with other packages like sphinx-multitoc-numbering to enable support for part/chapter structures provided by jupyter-book

This is a good strategy as we get improvements from sphinx development, in addition to not having to maintain our own LaTeX builder/writer in sphinx. It would nice to retain this approach (if possible).

I think for the majority of use cases - focusing on myst:md to pdf is the best approach (to build a tool that doesn't require any interaction with tex) but it would be nice to enable a --readable option to the latex builder

jb build <project> --builder=latex --readable

Tasks to complete

• enable turning pygments syntax highlighting off and use minted with direct placement of code in LaTeX (tex) file
• simply the use of \sphinx macros