Merge pull request #12755 from ichard26/cache-supported-tags

Cache supported tags in resolver factory
pypa · Jun 27, 2024 · 47ffcdd · 47ffcdd
2 parents 0d1cde3 + 47e82e2
commit 47ffcdd
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diff --git a/news/12712.feature.rst b/news/12712.feature.rst
@@ -0,0 +1,2 @@
+Improve dependency resolution performance by caching platform compatibility
+tags during wheel cache lookup.
diff --git a/src/pip/_internal/resolution/resolvelib/factory.py b/src/pip/_internal/resolution/resolvelib/factory.py
@@ -121,6 +121,7 @@ def __init__(
         self._extras_candidate_cache: Dict[
             Tuple[int, FrozenSet[NormalizedName]], ExtrasCandidate
         ] = {}
+        self._supported_tags_cache = get_supported()
 
         if not ignore_installed:
             env = get_default_environment()
@@ -608,7 +609,7 @@ def get_wheel_cache_entry(
         return self._wheel_cache.get_cache_entry(
             link=link,
             package_name=name,
-            supported_tags=get_supported(),
+            supported_tags=self._supported_tags_cache,
         )
 
     def get_dist_to_uninstall(self, candidate: Candidate) -> Optional[BaseDistribution]: