X-Git-Url: http://gitweb.michael.orlitzky.com/?p=mjotex.git;a=blobdiff_plain;f=mjo-listing.tex;h=cf3fc582a1d1e7fa8aefb8a62e7488477ade3dbf;hp=f898aba13ea886be03258fea0bfc61dd1ee72dd9;hb=f9205a3b883c08499edfdd3f9d1a6170a6fc6755;hpb=fc7cfa7f3d02715cb09eae2e1c6bc501dc2d8d50

diff --git a/mjo-listing.tex b/mjo-listing.tex
index f898aba..cf3fc58 100644
--- a/mjo-listing.tex
+++ b/mjo-listing.tex
@@ -14,8 +14,13 @@
 \def\havemjolisting{1}
 
 
-\usepackage{listings}
-\usepackage{tcolorbox}
+\ifx\lstset\undefined
+  \usepackage{listings}
+\fi
+
+\ifx\tcbuselibrary\undefined
+  \usepackage{tcolorbox}
+\fi
 
 % Tell tcolorbox to use ``listings'' within the boxes.
 \tcbuselibrary{listings}