I have a namespace package, and in one of the packages in that namespace I have a Jinja2 template. I am using jinja2.PackageLoader to load it.
However, if I create a jinja2.PackageLoader('namespacepackage') and then try to list_templates(), it fails to find the templates/ folder, and I can see why:
It creates a pkg_resources.DefaultProvider('namespacepackage') and then uses its resource_listdir() method, giving it 'templates' as argument.
But resource_listdir() joins this path with self.module_path internally, and self.module_path is set from the module's __path__ attribute:
self.module_path = os.path.dirname(getattr(module, '__file__', ''))
Since namespacepackage has no __file__, DefaultProvider.module_path is set to '', and the template lookup in Jinja fails.
How is this supposed to work?
Aren't I supposed to provide the package name to PackageLoader?
If I refer to a specific namespacepackage.module, everything works, because the module has a __file__, so DefaultProvider.module_path is set correctly.
