Fix ResourceReader ImportError exception on Python 3.14 (#299)

importlib.abc.ResourceReader moved to importlib.resources.abc.ResourceReader
in Python 3.11. The old location was deprecated in 3.11 and removed in 3.14.

TraversableResources is now the preferred API, but AIUI ResourceReader has no
formal deprecation at the new location. I've chosen an if/else block because
it is interpretted by MyPy, as opposed to try/except ImportError which MyPy
cannot type check on Python <= 3.10.

Author: moreati

pyproject.toml

@@ -32,6 +32,7 @@ classifiers=[
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
     "Programming Language :: Python :: Implementation :: CPython",
     "Programming Language :: Python :: Implementation :: PyPy",
     "Programming Language :: Rust",

wasmtime/loader.py

@@ -14,8 +14,12 @@
 import struct
 from pathlib import Path
 from importlib import import_module
-from importlib.abc import Loader, MetaPathFinder, ResourceReader
+from importlib.abc import Loader, MetaPathFinder
 from importlib.machinery import ModuleSpec
+if sys.version_info[:2] >= (3, 11):
+    from importlib.resources.abc import ResourceReader
+else:
+    from importlib.abc import ResourceReader
 
 from wasmtime import Module, Linker, Store, WasiConfig
 from wasmtime import Func, Table, Global, Memory