ENH: drop importlib_resources dependency

Signed-off-by: Filipe Laíns <[email protected]>

mesonpy/__init__.py

@@ -42,10 +42,6 @@
 else:
     import tomllib
 
-if sys.version_info >= (3, 10):
-    import importlib.resources as importlib_resources
-else:
-    import importlib_resources
 
 import mesonpy._compat
 import mesonpy._elf
@@ -56,7 +52,7 @@
 
 from mesonpy._compat import (
     Collection, Iterable, Iterator, Literal, Mapping, ParamSpec, Path,
-    cached_property, typing_get_args
+    cached_property, read_binary, typing_get_args
 )
 
 
@@ -616,7 +612,7 @@ def build_editable(self, directory: Path, verbose: bool = False) -> pathlib.Path
             ''').strip().encode()
             whl.writestr(
                 f'{hook_module_name}.py',
-                (importlib_resources.files('mesonpy') / '_editable.py').read_bytes() + hook_install_code,
+                read_binary('mesonpy', '_editable.py') + hook_install_code,
             )
             # install .pth file
             whl.writestr(

mesonpy/_compat.py

@@ -3,6 +3,7 @@
 # SPDX-FileCopyrightText: 2021 Filipe Laíns <[email protected]>
 
 import functools
+import importlib.resources
 import os
 import pathlib
 import sys
@@ -37,6 +38,13 @@
     cached_property = lambda x: property(functools.lru_cache(maxsize=None)(x))  # noqa: E731
 
 
+if sys.version_info >= (3, 9):
+    def read_binary(package: str, resource: str) -> bytes:
+        return importlib.resources.files(package).joinpath(resource).read_bytes()
+else:
+    read_binary = importlib.resources.read_binary
+
+
 Path = Union[str, os.PathLike]
 
 
@@ -52,6 +60,7 @@ def is_relative_to(path: pathlib.Path, other: Union[pathlib.Path, str]) -> bool:
 __all__ = [
     'cached_property',
     'is_relative_to',
+    'read_binary',
     'typing_get_args',
     'Collection',
     'Iterable',

pyproject.toml

@@ -6,7 +6,6 @@ requires = [
   'pyproject-metadata>=0.6.1',
   'tomli>=1.0.0; python_version<"3.11"',
   'typing-extensions>=3.7.4; python_version<"3.10"',
-  'importlib_resources>=5.0.0; python_version<"3.10"',
 ]
 
 [project]
@@ -30,7 +29,6 @@ dependencies = [
   'pyproject-metadata>=0.6.1', # not a hard dependency, only needed for projects that use PEP 621 metadata
   'tomli>=1.0.0; python_version<"3.11"',
   'typing-extensions>=3.7.4; python_version<"3.10"',
-  'importlib_resources>=5.0.0; python_version<"3.10"',
 ]
 
 dynamic = [