From 474cca3005324b2d6748739a6442e09673cee552 Mon Sep 17 00:00:00 2001
From: Wouter Deconinck <wdconinc@gmail.com>
Date: Sun, 11 Aug 2024 09:54:18 -0500
Subject: [PATCH] python: urls return [None] if not pypi

---
 lib/spack/spack/build_systems/python.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/spack/spack/build_systems/python.py b/lib/spack/spack/build_systems/python.py
index 56d61a0191b..9ab14702afb 100644
--- a/lib/spack/spack/build_systems/python.py
+++ b/lib/spack/spack/build_systems/python.py
@@ -365,7 +365,7 @@ def urls(cls) -> Optional[List[str]]:
                 pypi = "/".join([name, file.replace("-", "_", name_dash_count)])
                 urls.append(f"https://files.pythonhosted.org/packages/source/{pypi[0]}/{pypi}")
             return urls
-        return []
+        return [None]
 
     @lang.classproperty
     def list_url(cls) -> Optional[str]:  # type: ignore[override]