From 69655f37fc955cf53f23a6cc185967a1270b5302 Mon Sep 17 00:00:00 2001
From: TEC <git@tecosaur.net>
Date: Tue, 13 Sep 2022 18:38:44 +0800
Subject: [PATCH] Org: Add a LuaLaTeX check around Julia fontspec

---
 config.org | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/config.org b/config.org
index 86fc411..6a67403 100644
--- a/config.org
+++ b/config.org
@@ -9871,10 +9871,12 @@ this just as a fallback font (when it isn't a pain to do so).
 
 #+name: julia-mono-fontspec
 #+begin_src LaTeX
-\\usepackage{fontspec}
-\\newfontfamily\\JuliaMono{JuliaMono-Regular.ttf}[Path=/usr/share/fonts/truetype/, Extension=.ttf]
-\\newfontface\\JuliaMonoRegular{JuliaMono-Regular}
-\\setmonofont{JuliaMonoRegular}[Contextuals=Alternate, Scale=MatchLowercase]
+\\ifcsname directlua\\endcsname
+  \\usepackage{fontspec}
+  \\newfontfamily\\JuliaMono{JuliaMono-Regular.ttf}[Path=/usr/share/fonts/truetype/, Extension=.ttf]
+  \\newfontface\\JuliaMonoRegular{JuliaMono-Regular}
+  \\setmonofont{JuliaMonoRegular}[Contextuals=Alternate, Scale=MatchLowercase]
+\\fi
 #+end_src
 
 Now all that remains is to hook this into the preamble generation.