Mnemosyne doesn't support LaTeX by default. It requires two additional packages — latex and dvipng.
First, install the lightweight version of TeX that has latex binary:
brew install --cask basictex
Then, update the package manager and install the dvipng package:
sudo tlmgr update --self
sudo tlmgr install dvipng
Mnemosyne fails to find executables in their installation locations on MacOS. Therefore, we need to specify these location in the configuration file first.
Get the full path to the installed binaries:
which latex
which dvipng
This should return:
/Library/TeX/texbin/latex
/Library/TeX/texbin/dvipng
Use these locations for latex and dvipng commands in /Library/Mnemosyne/config.py:
# Latex command.
latex = "/Library/TeX/texbin/latex -interaction=nonstopmode"
# Latex dvipng command.
dvipng = "/Library/TeX/texbin/dvipng -D 200 -T tight tmp.dvi"