Make BypassStdoutInterpreter compatible with EmPy 4.x (#664)

colcon · Sep 10, 2024 · 927af5e · 927af5e
1 parent 7cb836e
commit 927af5e
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/colcon_core/shell/template/__init__.py b/colcon_core/shell/template/__init__.py
@@ -62,9 +62,12 @@ def expand_template(template_path, destination_path, data):
 class BypassStdoutInterpreter(Interpreter):
  """Interpreter for EmPy which keeps `stdout` unchanged."""
 
- def installProxy(self): # noqa: D102 N802
+ def installProxy(self, *args, **kwargs): # noqa: D102 N802
  # avoid replacing stdout with ProxyFile
- pass
+ # in EmPy 3.x, this function performed in-place modification.
+ # in EmPy 4.x, it is passed the output stream and is expected to
+ # return the output stream.
+ return next(iter(args), None)
 
 
 cached_tokens = {}