chore(deps): bump pyarrow 25.0.1 to 26.0.0

CHANGELOG.md

@@ -13,6 +13,9 @@ follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
   may. Documentation only: no package changes.
 - The engine images build on `python:3.14.8-slim` (was `3.14.2`), and
   `.python-version` and the `template/` Dockerfile follow.
+- `pyarrow` is pinned at `26.0.0` (was `25.0.1`) in the runtime, the engine
+  contract's `testing` extra and the three adapters, so they keep resolving
+  together.
 
 ## [0.10.0] - 2026-10-22
 

adapters/duckdb/pyproject.toml

@@ -12,7 +12,7 @@ dependencies = [
     # metadata, and this adapter subclasses the contract's port directly.
     "continuo-engine-contract==0.8.1",
     "duckdb==1.5.6",
-    "pyarrow==25.0.1",
+    "pyarrow==26.0.0",
 ]
 classifiers = [
     "Development Status :: 4 - Beta",

adapters/postgres/pyproject.toml

@@ -14,7 +14,7 @@ dependencies = [
     # directly, so the pair must stay the tested one.
     "continuo-engine-contract==0.8.1",
     "psycopg2-binary==2.9.12",
-    "pyarrow==25.0.1",
+    "pyarrow==26.0.0",
 ]
 classifiers = [
     "Development Status :: 4 - Beta",

adapters/trino/pyproject.toml

@@ -14,7 +14,7 @@ dependencies = [
     # directly, so the pair must stay the tested one.
     "continuo-engine-contract==0.8.1",
     "trino==0.339.0",
-    "pyarrow==25.0.1",
+    "pyarrow==26.0.0",
 ]
 classifiers = [
     "Development Status :: 4 - Beta",

contract/pyproject.toml

@@ -17,7 +17,7 @@ classifiers = [
 # The conformance suite (continuo_engine_contract.testing.conformance) for adapter test
 # suites, this repo's and bring-your-own: pytest, plus pyarrow to build the rows.
 # Pinned exactly, like every in-repo dependency.
-testing = ["pytest==9.1.1", "pyarrow==25.0.1"]
+testing = ["pytest==9.1.1", "pyarrow==26.0.0"]
 
 [build-system]
 requires = ["hatchling"]

contract/tests/test_contract_packaging.py

@@ -23,4 +23,4 @@ def test_wheel_ships_the_conformance_suite_and_the_testing_extra(tmp_path):
     assert "continuo_engine_contract/keys.py" in names
     assert "Provides-Extra: testing" in metadata
     assert re.search(r"Requires-Dist: pytest==9\.1\.1; extra == ['\"]testing['\"]", metadata)
-    assert re.search(r"Requires-Dist: pyarrow==25\.0\.1; extra == ['\"]testing['\"]", metadata)
+    assert re.search(r"Requires-Dist: pyarrow==26\.0\.0; extra == ['\"]testing['\"]", metadata)

pyproject.toml

@@ -21,7 +21,7 @@ dependencies = [
     # an exact pin therefore costs nothing and keeps the tested pair together.
     "continuo-engine-contract==0.8.1",
     "boto3==1.43.85",
-    "pyarrow==25.0.1",
+    "pyarrow==26.0.0",
     "PyYAML==6.0.3",
     # Pinned in lockstep with continuo-engine-contract's OWN sqlglot pin
     # (currently ==30.17.0) -- bump this whenever that pin moves.