MarsSeed [1] filed a deletion request for nvidiux [2]:

Python 2 and Qt4 based tool last updated in 2018. GitHub repo inactivated (archived) by developer:

https://github.com/RunGp/Nvidiux Quote: **nvidiux is no longer developed and not support any modern distribution with drop support of python2 Please use another tools Thanks to all for use nvidiux **

Cannot be built since 2020 because of dropped Python 2 based dependency.

Keeping it is not worth the hassle. There are working alternatives for NVIDIA GPU fan/voltage/clocking support.

Safe to delete, nothing depends on it.

[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/nvidiux/