Use packaging.tags instead of distlib

See the discussion in #5

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["distlib", "flit"]
+requires = ["distlib~=0.3", "flit~=3.7"]
 build-backend = "py_build_cmake.build"
 backend-path = ["src"]
 
@@ -22,7 +22,7 @@ classifiers = [
     "Operating System :: Microsoft :: Windows",
     "Operating System :: MacOS",
 ]
-dependencies = ["distlib~=0.3", "flit~=3.7"]
+dependencies = ["distlib~=0.3", "flit~=3.7", "packaging~=21.0"]
 dynamic = ["version", "description"]
 
 [project.urls]

src/py_build_cmake/build.py

@@ -542,8 +542,16 @@ def create_wheel(self, wheel_directory, tmp_build_dir, cfg, dist_name,
         tags = None
         if cfg.cross:
             tags = self.get_cross_tags(cfg.cross)
-        if pure:
+        elif pure:
             tags = {'pyver': ['py3']}
+        else:
+            import packaging.tags
+            tag = next(packaging.tags.sys_tags())
+            tags = {
+                'pyver': [tag.interpreter],
+                'abi': [tag.abi],
+                'arch': [tag.platform],
+            }
         wheel_path = whl.build(paths, tags=tags, wheel_version=(1, 0))
         whl_name = os.path.relpath(wheel_path, wheel_directory)
         return whl_name