fixup!

packaging/pep517_backend/hooks.py

@@ -1,12 +1,19 @@
 """PEP 517 build backend for optionally pre-building Cython."""
 
+from contextlib import suppress as _suppress
+
 from setuptools.build_meta import *  # Re-exporting PEP 517 hooks  # pylint: disable=unused-wildcard-import,wildcard-import
 
 from ._backend import (  # noqa: WPS436  # Re-exporting PEP 517 hooks
     build_sdist,
     build_wheel,
-    get_requires_for_build_editable,
     get_requires_for_build_wheel,
-    prepare_metadata_for_build_editable,
     prepare_metadata_for_build_wheel,
 )
+
+with _suppress(ImportError):  # Only succeeds w/ setuptools implementing PEP 660
+    from ._backend import (  # noqa: WPS436  # Re-exporting PEP 660 hooks
+       build_editable,
+       get_requires_for_build_editable,
+       prepare_metadata_for_build_editable,
+    )