documenting build_environment_vars_for()

diff --git a/lib/local/lib.pm b/lib/local/lib.pm
index 2427f51..8a7633d 100755 (executable)
--- a/lib/local/lib.pm
+++ b/lib/local/lib.pm
@@ -612,6 +612,9 @@ given path as the base directory.
 
 =back
 
+Returns a hash with the variables listed above, properly set to use the
+given path as the base directory.
+
 =head2 setup_env_hash_for
 
 =over 4