element.py: Move sandbox configuration check to __sandbox()

This allows `bst show` and other commands that don't require a sandbox
to work with elements that are not supported by the current sandbox.

1 files changed, 2 insertions, 4 deletions

diff --git a/src/buildstream/element.py b/src/buildstream/element.py
index 03b64e760..06581b652 100644
--- a/src/buildstream/element.py
+++ b/src/buildstream/element.py
@@ -328,10 +328,6 @@ class Element(Plugin):
         # Extract Sandbox config
         self.__sandbox_config = self.__extract_sandbox_config(context, project, meta)
 
-        if not self.__use_remote_execution():
-            platform = context.platform
-            platform.check_sandbox_config(self.__sandbox_config)
-
     def __lt__(self, other):
         return self.name < other.name
 
@@ -2514,6 +2510,8 @@ class Element(Plugin):
             yield sandbox
 
         elif directory is not None and os.path.exists(directory):
+            platform = context.platform
+            platform.check_sandbox_config(config)
 
             sandbox = platform.create_sandbox(
                 context,