MarsSeed [1] filed a deletion request for jupyter_contrib_nbextensions [2]: Obsolete: upstream is not maintained since 2022 [a], and not compatible with the fundamentally overhauled jupyter-notebook 7.x - see upstream issue #1661 from May 2024. [b] [a]: http://github.com/ipython- contrib/jupyter_contrib_nbextensions/commits/master [b]: http://github.com/ipython- contrib/jupyter_contrib_nbextensions/issues/1661 [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/jupyter_contrib_nbextensions/