From 7a1fcc8e7936c50a01f454f913cdd51158a30216 Mon Sep 17 00:00:00 2001
From: Douglas Creager <dcreager@dcreager.net>
Date: Tue, 25 Nov 2025 21:01:34 -0500
Subject: [PATCH] add more sequents

---
 .../ty_python_semantic/src/types/constraints.rs  | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/crates/ty_python_semantic/src/types/constraints.rs b/crates/ty_python_semantic/src/types/constraints.rs
index 0dfb7ea251..d817fe3bde 100644
--- a/crates/ty_python_semantic/src/types/constraints.rs
+++ b/crates/ty_python_semantic/src/types/constraints.rs
@@ -2529,6 +2529,22 @@ impl<'db> SequentMap<'db> {
                 (bound_constraint.lower(db), constrained_upper)
             }
 
+            // (CL ≤ C ≤ pivot) ∧ (pivot ≤ B ≤ BU) → (CL ≤ C ≤ B)
+            (constrained_lower, constrained_upper)
+                if !matches!(constrained_upper, Type::TypeVar(_))
+                    && constrained_upper == bound_constraint.lower(db) =>
+            {
+                (constrained_lower, Type::TypeVar(bound_typevar))
+            }
+
+            // (pivot ≤ C ≤ CU) ∧ (BL ≤ B ≤ pivot) → (B ≤ C ≤ CU)
+            (constrained_lower, constrained_upper)
+                if !matches!(constrained_lower, Type::TypeVar(_))
+                    && constrained_lower == bound_constraint.upper(db) =>
+            {
+                (Type::TypeVar(bound_typevar), constrained_upper)
+            }
+
             _ => return,
         };