builtin: add a few missing __init__.py (#50374)

lib/spack/spack/audit.py

@@ -350,7 +350,7 @@ def _ensure_no_folders_without_package_py(error_cls):
     for repository in spack.repo.PATH.repos:
         missing = []
         for entry in os.scandir(repository.packages_path):
-            if not entry.is_dir():
+            if not entry.is_dir() or entry.name == "__pycache__":
                 continue
             package_py = pathlib.Path(entry.path) / spack.repo.package_file_name
             if not package_py.exists():

lib/spack/spack/repo.py

@@ -232,6 +232,8 @@ def get_all_package_diffs(type: str, repo: "Repo", rev1="HEAD^1", rev2="HEAD") -
     changed: Set[str] = set()
     for path in lines:
         dir_name, _, _ = path.partition("/")
+        if not nm.valid_module_name(dir_name, repo.package_api):
+            continue
         pkg_name = nm.pkg_dir_to_pkg_name(dir_name, repo.package_api)
         if pkg_name not in added and pkg_name not in removed:
             changed.add(pkg_name)