_project.py: Do not find default targets in .bst directorychandan/fix-default-target-junctions

In cases where element path is set to `.` and the project has some
junctions, we have to be careful when trying to find the default
targets. We can't simply find all files ending with `.bst`. But, we
first need to ensure that we do not recurse down the `.bst` directory
which is used to store BuildStream internals.

Fixes #992.

1 files changed, 5 insertions, 1 deletions

diff --git a/buildstream/_project.py b/buildstream/_project.py
index af0c8d7b3..93ed9fc3e 100644
--- a/buildstream/_project.py
+++ b/buildstream/_project.py
@@ -543,7 +543,11 @@ class Project():
 
         # If default targets are not configured, default to all project elements
         default_targets = []
-        for root, _, files in os.walk(self.element_path):
+        for root, dirs, files in os.walk(self.element_path):
+            # Do not recurse down the ".bst" directory which is where we stage
+            # junctions and other BuildStream internals.
+            if ".bst" in dirs:
+                dirs.remove(".bst")
             for file in files:
                 if file.endswith(".bst"):
                     rel_dir = os.path.relpath(root, self.element_path)