Merge pull request #13694 from mgorny/setuptools-backend

Modernize setuptools usage in pyproject.toml

pyproject.toml

@@ -1,3 +1,3 b''
 [build-system]
-requires = ["setuptools >= 51.0.0", "wheel"]
-build-backend = "setuptools.build_meta:__legacy__"
+requires = ["setuptools >= 51.0.0"]
+build-backend = "setuptools.build_meta"

setup.py

@@ -64,6 +64,8 b' Python {py} detected.'
 from setuptools import setup
 
 # Our own imports
+sys.path.insert(0, ".")
+
 from setupbase import target_update
 
 from setupbase import (