Avoid subclassing the bdist_wheel command

This is no longer necessary in recent versions of setuptools.

Author: kleisauke

pyproject.toml

@@ -2,7 +2,6 @@
 requires = [
     # First version of setuptools to support pyproject.toml configuration
     "setuptools>=61.0.0",
-    "wheel",
     # Must be kept in sync with `project.dependencies`
     "cffi>=1.0.0",
     "pkgconfig>=1.5",

setup.py

@@ -2,7 +2,6 @@
 
 from os import path
 from setuptools import setup
-from wheel.bdist_wheel import bdist_wheel
 
 base_dir = path.dirname(__file__)
 src_dir = path.join(base_dir, 'pyvips', 'pyvips')
@@ -12,23 +11,12 @@
 sys.path.insert(0, src_dir)
 
 
-class bdist_wheel_abi3(bdist_wheel):
-    def get_tag(self):
-        python, abi, plat = super().get_tag()
-
-        if python.startswith('cp'):
-            # on CPython, our wheels are abi3 and compatible back to 3.7
-            return 'cp37', 'abi3', plat
-
-        return python, abi, plat
-
-
 if 'bdist_wheel' in sys.argv:
     cffi_modules = ['pyvips/pyvips/pyvips_build.py:ffibuilder']
 else:
     cffi_modules = []
 
 setup(
     cffi_modules=cffi_modules,
-    cmdclass={'bdist_wheel': bdist_wheel_abi3},
+    options={'bdist_wheel': {'py_limited_api': f'cp{sys.version_info.major}{sys.version_info.minor}'}},
 )