assert repository not added to pool twice

python-poetry · Jun 25, 2022 · 5bbd7b4 · 5bbd7b4
1 parent 1a6bbf5
commit 5bbd7b4
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/poetry/repositories/pool.py b/src/poetry/repositories/pool.py
@@ -62,6 +62,8 @@ def add_repository(
         Adds a repository to the pool.
         """
         repository_name = repository.name.lower()
+        if repository_name in self._lookup:
+            raise ValueError(f"{repository_name} already added")
 
         if default:
             if self.has_default():