Reduce resolver rounds by an order of magnitude (#11908)

Co-authored-by: Pradyun Gedam <pradyunsg@users.noreply.github.com>
pypa · Mar 29, 2023 · 10d9cbc · 10d9cbc
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diff --git a/news/11908.feature.rst b/news/11908.feature.rst
@@ -0,0 +1 @@
+Reduce the number of resolver rounds, since backjumping makes the resolver more efficient in finding solutions. This also makes pathological cases fail quicker.
diff --git a/src/pip/_internal/resolution/resolvelib/resolver.py b/src/pip/_internal/resolution/resolvelib/resolver.py
@@ -88,9 +88,9 @@ def resolve(
         )
 
         try:
-            try_to_avoid_resolution_too_deep = 2000000
+            limit_how_complex_resolution_can_be = 200000
             result = self._result = resolver.resolve(
-                collected.requirements, max_rounds=try_to_avoid_resolution_too_deep
+                collected.requirements, max_rounds=limit_how_complex_resolution_can_be
             )
 
         except ResolutionImpossible as e: