Handle None values for link channel name gracefully (conda#8680)

Handle None values for link channel name gracefully
alexhall · May 17, 2019 · f26e4c2 · f26e4c2
2 parents a787a79 + df670f7
commit f26e4c2
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/conda/core/link.py b/conda/core/link.py
@@ -944,7 +944,8 @@ def diff_strs(unlink_prec, link_prec):
             if channel_change or subdir_change:
                 if unlink_prec.channel.name is not None:
                     builder_left.append(unlink_prec.channel.name)
-                builder_right.append(link_prec.channel.name)
+                if link_prec.channel.name is not None:
+                    builder_right.append(link_prec.channel.name)
             if subdir_change:
                 builder_left.append("/" + unlink_prec.subdir)
                 builder_right.append("/" + link_prec.subdir)