latexpic: Use nix-shell

latexpic.sh

@@ -1,4 +1,10 @@
 #!/usr/bin/env bash
+# shellception since nix-shell and shebang does not work with combining texlive
+if ! command -v xelatex >> /dev/null; then
+	nix-shell -p 'texlive.combine { inherit (pkgs.texlive) scheme-small chemfig simplekv siunitx standalone varwidth; }' --run "$0 $@"
+	exit $?
+fi
+
 tmpdir=$(mktemp -d)
 cd $tmpdir
 
@@ -19,7 +25,7 @@ $(cat $OLDPWD/$1)
 \end{document}
 EOF
 
-lualatex doc.tex
+xelatex doc.tex
 mutool draw -o doc.svg doc.pdf
 inkscape -D -A doc.pdf doc.svg
 mutool draw -r 600 -o $OLDPWD/${1}.png doc.pdf