I'm able to install and import the module, at least, so the original issue seems to have been fixed. I'll post an update when I've had a chance to test toggling output.
This worked great, I was able to import the module without any problems after patching it. Thanks.
This module can only be run on a Raspberry Pi!
That fixed the problem! Thank you. I didn't know those "universal" package systems actually ran in sandboxes. TexMaths recognized the latex installation immediately upon installing directly from rpm.
I downloaded it as a Flatpak: https://www.libreoffice.org/download/flatpak/ I can access /usr/bin from LibreOffice. Executable files open as garbled text but are still readable, and text files open fine. They open in read-only mode, but clicking "Edit Document" allows me to edit the files without providing an administrator password.
As a note, there should be line breaks after "grep latex" and "grep dvipng," but I can't edit the bug report, for some reason.
Cannot find latex in Fedora 27
The updated version fixed the issue. I no longer have the old installation, so I'm unable to attach my LibreOffice profile.