autodoc: an imported TypeVar is not resolved (refs: #8415)

So far, a TypeVar is rendered without module name. As a result, it
could not be resolved if it is imported from other modules.  This
prepends its module name and make it resolvable.  This is available
only in Python 3.7 or above.

As a side effect, all of TypeVars are displayed with module name. It
should be fixed in latter step (refs: #7119)

1 files changed, 4 insertions, 1 deletions

diff --git a/sphinx/util/typing.py b/sphinx/util/typing.py
index d2bd03efd..afd2f805a 100644
--- a/sphinx/util/typing.py
+++ b/sphinx/util/typing.py
@@ -263,7 +263,10 @@ def stringify(annotation: Any) -> str:
         else:
             return annotation
     elif isinstance(annotation, TypeVar):
-        return annotation.__name__
+        if annotation.__module__ == 'typing':
+            return annotation.__name__
+        else:
+            return '.'.join([annotation.__module__, annotation.__name__])
     elif inspect.isNewType(annotation):
         # Could not get the module where it defiend
         return annotation.__name__