fix deprecated pkg_resources

docs/overview.rst

@@ -177,6 +177,8 @@ different ABIs:
 
       The resulting filename is e.g. ``simple.hpy0.so``.
 
+      require backport ``importlib_resources>=5.0`` on ``CPython<3.10``.
+
     HPy Hybrid ABI
 
       The HPy Hybrid ABI is essentially the same as the Universal ABI, with
@@ -324,7 +326,7 @@ of features. As on April 2023, the following milestones have been reached:
     CPython.
 
   - it is possible to load HPy Universal extensions on CPython, thanks to the
-    ``hpy.universal`` package.
+    ``hpy.universal`` package (require ``importlib_resources>=5.0`` on ``CPython<3.10``).
 
   - it is possible to load HPy Universal extensions on
     PyPy (using the PyPy `hpy branch <https://foss.heptapod.net/pypy/pypy/tree/branch/hpy>`_).

hpy/devel/__init__.py

@@ -201,18 +201,37 @@ def handle_hpy_ext_modules(dist, attr, hpy_ext_modules):
 _HPY_UNIVERSAL_MODULE_STUB_TEMPLATE = """
 # DO NOT EDIT THIS FILE!
 # This file is automatically generated by hpy
-
 def __bootstrap__():
-
-    from sys import modules
-    from os import environ
-    from pkg_resources import resource_filename
+    from sys import modules, version_info
+    from os import path, environ
     from hpy.universal import _load_bootstrap
-    ext_filepath = resource_filename(__name__, {ext_file!r})
-    m = _load_bootstrap({module_name!r}, __name__, __package__, ext_filepath,
-                        __loader__, __spec__, environ)
+
+    ext_name = {ext_file!r}
+    module_name = {module_name!r}
+
+    if version_info < (3, 10):
+        import importlib_resources as resources
+    else:
+        from importlib import resources
+
+    if not __package__:
+        # directly called with python -m
+        ext_filepath = path.join(path.dirname(__file__), ext_name)
+    else:
+        ext_filepath = resources.files(__package__).joinpath(ext_name)
+
+    m = _load_bootstrap(
+        module_name,
+        __name__,
+        __package__,
+        str(ext_filepath),
+        __loader__,
+        __spec__,
+        environ,
+    )
     modules[__name__] = m
 
+
 __bootstrap__()
 """