Check extensions for exact matches

I ran into an issue when I have an upstream and a binary cache with an identical installation of python (DAG hash match). It led to two entries in the extendee_spec list. This PR ensures that extendees are not identical before extending.
2024-04-02 16:30:06 -06:00
1 changed files with 1 additions and 1 deletions
--- a/lib/spack/spack/package_base.py
+++ b/lib/spack/spack/package_base.py
@@ -1284,7 +1284,7 @@ def extendee_spec(self):

        # If the extendee is in the spec's deps already, return that.
        for dep in self.spec.traverse(deptype=("link", "run")):
-            if dep.name in self.extendees:
+            if dep.name in self.extendees and dep not in deps:
                deps.append(dep)

        if deps: