Cover special case with NoneType in annotation

* fix warnings for setup.py

Author: penguinolog

logwrap/repr_utils.py

@@ -250,6 +250,9 @@ def _repr_callable(
         sig: inspect.Signature = inspect.signature(src)
         if sig.return_annotation is inspect.Parameter.empty:
             annotation: str = ""
+        elif sig.return_annotation is type(None):  # noqa: E721
+            # Python 3.10 special case
+            annotation = " -> None"
         else:
             annotation = f" -> {getattr(sig.return_annotation, '__name__', sig.return_annotation)!s}"
 

setup.py

@@ -107,8 +107,8 @@ def run(self) -> None:
         except (
             distutils.errors.DistutilsPlatformError,
             FileNotFoundError,
-        ):
-            raise BuildFailed()
+        ) as exc:
+            raise BuildFailed() from exc
 
     def build_extension(self, ext) -> None:
         """build_extension.
@@ -122,8 +122,8 @@ def build_extension(self, ext) -> None:
             distutils.errors.DistutilsExecError,
             distutils.errors.DistutilsPlatformError,
             ValueError,
-        ):
-            raise BuildFailed()
+        ) as exc:
+            raise BuildFailed() from exc
 
 
 # noinspection PyUnresolvedReferences
@@ -224,6 +224,7 @@ def get_simple_vars_from_src(
     license=VARIABLES["__license__"],
     description=VARIABLES["__description__"],
     long_description=LONG_DESCRIPTION,
+    long_description_content_type="text/x-rst",
     classifiers=CLASSIFIERS,
     keywords=KEYWORDS,
     python_requires=">=3.7.0",