Compile Wolfram Engine Backend for TeXmacs on Linux (Nix)

compile_MathLink_linux.sh

#!/usr/bin/env bash

# 1. Installation location of the Wolfram Engine
WOLFRAMROOT=$(nix-env -q wolfram-engine --out-path --no-name)
# 2. MathLink path. Consider saving it for reasons in 4.
MLINKROOT=$WOLFRAMROOT/libexec/SystemFiles/Links/MathLink/DeveloperKit/Linux-x86-64/CompilerAdditions

# 3. Compile
TEXMACSROOT=$(nix-env -q TeXmacs --out-path --no-name)
gcc -m64 -o ~/.TeXmacs/bin/tm_mathematica.bin \
  $TEXMACSROOT/share/TeXmacs/plugins/mathematica/src.lazy/tm_mathematica.c \
  -I $MLINKROOT -L $MLINKROOT -lML64i4 -lrt -lm -lpthread -lstdc++ -ldl -luuid
  
# 4. To get it to work we should additionally specify the following at TeXmacs launch time:
export LD_LIBRARY_PATH=$MLINKROOT

# 5. Launch. 
texmacs