diff -up build/pkgs/sagetex/src/run-sagetex-if-necessary.py.orig build/pkgs/sagetex/src/run-sagetex-if-necessary.py
--- build/pkgs/sagetex/src/run-sagetex-if-necessary.py.orig	2019-01-09 09:51:28.000000000 -0700
+++ build/pkgs/sagetex/src/run-sagetex-if-necessary.py	2019-04-09 11:39:25.457566883 -0600
@@ -63,7 +63,7 @@ if not uses_sagetex:
 
 # if something goes wrong, assume we need to run Sage
 run_sage = True
-        ignore = r"^( _st_.goboom|print('SageT| ?_st_.current_tex_line))"
+ignore = r"^( _st_.goboom|print('SageT| ?_st_.current_tex_line))"
 
 try:
     with open(src + '.sagetex.sage', 'r') as sagef: