From 67120c7c3eb9e40ba682aeb150f70b6eaab0d494 Mon Sep 17 00:00:00 2001
From: Ion Koutsouris <15728914+ion-elgreco@users.noreply.github.com>
Date: Sun, 1 Dec 2024 17:14:03 +0100
Subject: [PATCH 1/2] feat: enable view arrow export

---
 py-polars/polars/dataframe/frame.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/py-polars/polars/dataframe/frame.py b/py-polars/polars/dataframe/frame.py
index 649b1b15120e..92b10e81ca45 100644
--- a/py-polars/polars/dataframe/frame.py
+++ b/py-polars/polars/dataframe/frame.py
@@ -4283,13 +4283,18 @@ def write_delta(
         _check_if_delta_available()
 
         from deltalake import DeltaTable, write_deltalake
+        from deltalake import __version__ as delta_version
+        from packaging.version import Version
 
         _check_for_unsupported_types(self.dtypes)
 
         if isinstance(target, (str, Path)):
             target = _resolve_delta_lake_uri(str(target), strict=False)
 
-        data = self.to_arrow()
+        if Version(delta_version) >= Version("0.22.3"):
+            data = self.to_arrow(compat_level=CompatLevel.newest())
+        else:
+            data = self.to_arrow()
 
         if mode == "merge":
             if delta_merge_options is None:
@@ -4316,7 +4321,6 @@ def write_delta(
                 schema=schema,
                 mode=mode,
                 storage_options=storage_options,
-                large_dtypes=True,
                 **delta_write_options,
             )
             return None

From 53a233b2c05571a4d9e7912b1f7c921afbefa20e Mon Sep 17 00:00:00 2001
From: Ion Koutsouris <15728914+ion-elgreco@users.noreply.github.com>
Date: Mon, 2 Dec 2024 09:55:34 +0100
Subject: [PATCH 2/2] chore: increase deltalake minimum

---
 py-polars/pyproject.toml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/py-polars/pyproject.toml b/py-polars/pyproject.toml
index 63cf77976175..fa060fb48810 100644
--- a/py-polars/pyproject.toml
+++ b/py-polars/pyproject.toml
@@ -61,7 +61,7 @@ database = ["polars[adbc,connectorx,sqlalchemy]", "nest-asyncio"]
 fsspec = ["fsspec"]
 
 # Other I/O
-deltalake = ["deltalake >= 0.15.0"]
+deltalake = ["deltalake >= 0.19.0"]
 iceberg = ["pyiceberg >= 0.5.0"]
 
 # Other