Prefer build for loading metadata. Fixes #17.

CHANGES.rst

@@ -1,3 +1,9 @@
+v2.8.0
+======
+
+* #17: Prefer `build <https://pypi.org/project/build>`_
+  for loading metadata.
+
 v2.7.1
 ======
 

pytest_checkdocs/__init__.py

@@ -4,8 +4,8 @@
 
 import pytest
 import docutils.core
-import pep517.meta
 import importlib_metadata
+from build.util import project_wheel_metadata as load_metadata
 
 
 project_files = 'setup.py', 'setup.cfg', 'pyproject.toml'
@@ -69,7 +69,7 @@ def system_message(reporter, level, message, *children, **kwargs):
 
     def get_long_description(self):
         with _suppress_deprecation():
-            return Description.from_md(ensure_clean(pep517.meta.load('.').metadata))
+            return Description.from_md(ensure_clean(load_metadata('.')))
 
     @staticmethod
     def rst2html(value):

setup.cfg

@@ -19,7 +19,7 @@ include_package_data = true
 python_requires = >=3.7
 install_requires =
 	docutils >= 0.15
-	pep517
+	build
 	importlib_metadata >= 4
 
 [options.packages.find]