centralize platform_tags logic since it varies across releases

Author: boonhapus

cs_tools/cli/commands/self.py

@@ -6,7 +6,6 @@
 import pathlib
 import shutil
 import sys
-import sysconfig
 import zipfile
 
 from cs_tools import __version__, _types, updater, utils
@@ -53,10 +52,9 @@ def info(
         f"\n        System Info: [fg-warn]{meta.local_system.system}[/]"
         f"\n  Configs Directory: [fg-warn]{cs_tools_venv.base_dir}[/]"
         f"\nActivate VirtualEnv: [fg-warn]{source}[/]"
-        f"\n      Platform Tags: [fg-warn]{sysconfig.get_platform()}[/]"
+        f"\n      Platform Tags: [fg-warn]{utils.platform_tag()}[/]"
         f"\n"
     )
-
     if anonymous:
         text = utils.anonymize(text, anonymizer=" [dim]{anonymous}[/] ")
 

cs_tools/utils.py

@@ -19,6 +19,7 @@
 import logging
 import pathlib
 import sys
+import sysconfig
 import zipfile
 import zlib
 
@@ -101,6 +102,19 @@ async def with_backpressure(coro: Awaitable) -> Any:
     return await asyncio.gather(*(with_backpressure(coro) for coro in aws), return_exceptions=return_exceptions)
 
 
+def platform_tag() -> str:
+    """Return the platform tag for use in pip download."""
+    try:
+        from pip._vendor.packaging.tags import platform_tags
+        
+        platform_tag = next(iter(platform_tags()))
+    except Exception:
+        _LOG.debug("Could not fetch platform tags from vendored pip.packaging, falling back to sysconfig.")
+        platform_tag = sysconfig.get_platform()
+
+    return platform_tag
+
+
 def batched(iterable: Iterable[_T], *, n: int) -> Generator[Iterable[_T], None, None]:
     """Yield successive n-sized chunks from list."""
     # batched('ABCDEFG', 3) --> ABC DEF G