etc/sbuild.conf.in: Keep failed build trees for diagnostics.

diff --git a/etc/sbuild.conf.in b/etc/sbuild.conf.in
index dca002733ee4b69d2ebd5643d8182a4185d6d7ff..963f7d418e596662c20db24b285f2fbe136522c1 100644 (file)
--- a/etc/sbuild.conf.in
+++ b/etc/sbuild.conf.in
@@ -61,6 +61,11 @@ $build_environment = {
 ## Actually resolve alternatives properly.
 $resolve_alternatives = 1;
 
+## Leave debris for diagnostics.
+$purge_build_deps = "successful";
+$purge_build_directory = "successful";
+$purge_session = "successful";
+
 ## Don't do anything clever if the build dependencies fail.  The clever thing
 ## doesn't work on older distributions.  Also, it takes extra time, and
 ## that's not desirable.