X-Git-Url: http://gitweb.michael.orlitzky.com/?p=mjotex.git;a=blobdiff_plain;f=mjo-listing.tex;h=cf3fc582a1d1e7fa8aefb8a62e7488477ade3dbf;hp=f733be6b4c5d8179e317859b6d3e5735d9699ae2;hb=f9205a3b883c08499edfdd3f9d1a6170a6fc6755;hpb=bcef6c6339823ec1d823af1246cfb26eec0f9b52

diff --git a/mjo-listing.tex b/mjo-listing.tex
index f733be6..cf3fc58 100644
--- a/mjo-listing.tex
+++ b/mjo-listing.tex
@@ -10,8 +10,17 @@
 %   x
 %   \end{tcblisting}
 %
-\usepackage{listings}
-\usepackage{tcolorbox}
+\ifx\havemjolisting\undefined
+\def\havemjolisting{1}
+
+
+\ifx\lstset\undefined
+  \usepackage{listings}
+\fi
+
+\ifx\tcbuselibrary\undefined
+  \usepackage{tcolorbox}
+\fi
 
 % Tell tcolorbox to use ``listings'' within the boxes.
 \tcbuselibrary{listings}
@@ -52,3 +61,6 @@
                left=2em,%
                listing options={language=sage,style=sage},%
                listing file=sage_listings/#1.listing}}
+
+
+\fi