From a324f6efe31b31ee04c990c3593c65d0e183b0bb Mon Sep 17 00:00:00 2001
From: Benoit Bovy <benbovy@gmail.com>
Date: Wed, 9 Jul 2025 19:46:15 +0200
Subject: [PATCH] PandasIndex.create_variables hot fix.

---
 xarray/core/indexes.py | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/xarray/core/indexes.py b/xarray/core/indexes.py
index c233c6911e4..094a3a50b10 100644
--- a/xarray/core/indexes.py
+++ b/xarray/core/indexes.py
@@ -786,8 +786,16 @@ def create_variables(
         attrs: Mapping[Hashable, Any] | None
         encoding: Mapping[Hashable, Any] | None
 
-        if variables is not None and name in variables:
-            var = variables[name]
+        if variables is not None:
+            if name in variables:
+                var = variables[name]
+            else:
+                # temp fix for PandasIndex subclasses that
+                # do not update self.index.name in the
+                # (overridden) PandasIndex.from_variables()
+                assert len(variables) == 1
+                name, var = next(iter(variables.items()))
+                self.index.name = name
             attrs = var.attrs
             encoding = var.encoding
         else: