mrjackv [1] filed an orphan request for protonfixes-git [2]:
The package can't be built successfully and has been marked out of
date for a while
Dependencies have changed (now has kdialog and python-kivy as optional
dependencies) and cefpython3 needs to be renamed to python-cef
[1] https://aur.archlinux.org/account/mrjackv/
[2] https://aur.archlinux.org/pkgbase/protonfixes-git/