docs: Fix docs build (#639)

See failing run here https://github.com/CQCL/guppylang/actions/runs/11782620057/job/32818047506 The problem was that `_GuppyDummy` was missing the `_sources` field, so it didn't mock `_Guppy` correctly
CQCL · Nov 12, 2024 · bd6011c · bd6011c
1 parent 90d465d
commit bd6011c
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/guppylang/decorator.py b/guppylang/decorator.py
@@ -470,6 +470,8 @@ class _GuppyDummy:
     builds to mock the decorator.
     """
 
+    _sources = SourceMap()
+
     def __call__(self, arg: PyFunc | GuppyModule) -> Any:
         if isinstance(arg, GuppyModule):
             return lambda f: f