Ignore folders that are not valid namaspeces

src/ansible_compat/runtime.py

@@ -556,14 +556,17 @@ def install_requirements(  # noqa: C901
     def search_galaxy_paths(self, search_dir: Path, depth: int = 0) -> list[str]:
         """Search for galaxy paths (only one level deep)."""
         galaxy_paths: list[str] = []
-        for file in os.listdir(search_dir):
-            file_path = Path(file)
-            if file_path.is_dir() and depth < 1:
-                galaxy_paths.extend(self.search_galaxy_paths(file_path, 1))
-            elif fnmatch.fnmatch(file, "galaxy.yml"):
-                galaxy_paths.append(str(search_dir / file))
-        if depth == 0 and not galaxy_paths:
-            return ["galaxy.yml"]
+        # look only in folders that are valid namespaces
+        # https://galaxy.ansible.com/docs/contributing/namespaces.html#namespace-limitations
+        if re.match(r"^[a-z\d][a-z\d_]+$", search_dir.name):
+            for file in os.listdir(search_dir):
+                file_path = Path(file)
+                if file_path.is_dir() and depth < 1:
+                    galaxy_paths.extend(self.search_galaxy_paths(file_path, 1))
+                elif fnmatch.fnmatch(file, "galaxy.yml"):
+                    galaxy_paths.append(str(search_dir / file))
+            if depth == 0 and not galaxy_paths:
+                return ["galaxy.yml"]
         return galaxy_paths
 
     def prepare_environment(  # noqa: C901