From 578b581f4fa3c738107b068a794982af2acd0d2f Mon Sep 17 00:00:00 2001
From: Kefu Chai <k.chai@proxmox.com>
Date: Fri, 23 Jan 2026 09:36:22 +0800
Subject: [PATCH] pybind: hardwire language_level to 3

Previously, to maintain backward compatibility with Python 2, we set
'language_level' to sys.version_info.major, so the value would be 2
when building with Python 2, and 3 with Python 3. Now that Python 2
support has been dropped, we can hardwire it to "3".

This change also removes the comment about switching to
`language_level=3str` in the future. According to the Cython 3.1+
documentation,

> language_level=3 is now the default. language_level=3str has become a
> legacy alias.

see https://cython.readthedocs.io/en/3.1.x/src/changes.html.

For context, in Cython < 3.1, language_level=3 and language_level=3str
had different meanings:
- 3 = unprefixed strings are unicode
- 3str = unprefixed strings follow Python version (bytes in Py2, unicode
  in Py3)

Since we no longer support Python 2, this distinction is irrelevant and
the comment can be safely removed.

Signed-off-by: Kefu Chai <k.chai@proxmox.com>
---
 src/pybind/rados/rados.pyx | 1 +
 src/pybind/rados/setup.py  | 2 --
 src/pybind/rbd/rbd.pyx     | 1 +
 src/pybind/rbd/setup.py    | 2 +-
 src/pybind/rgw/rgw.pyx     | 1 +
 src/pybind/rgw/setup.py    | 1 -
 6 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/pybind/rados/rados.pyx b/src/pybind/rados/rados.pyx
index 48e9746161f..6b3780f8dd9 100644
--- a/src/pybind/rados/rados.pyx
+++ b/src/pybind/rados/rados.pyx
@@ -1,3 +1,4 @@
+# cython: language_level=3
 # cython: embedsignature=True, binding=True
 """
 This module is a thin wrapper around librados.
diff --git a/src/pybind/rados/setup.py b/src/pybind/rados/setup.py
index 72cfe365dda..ec345f9718c 100755
--- a/src/pybind/rados/setup.py
+++ b/src/pybind/rados/setup.py
@@ -217,8 +217,6 @@ setup(
                 **ext_args
             )
         ],
-        # use "3str" when Cython 3.0 is available
-        compiler_directives={'language_level': sys.version_info.major},
         compile_time_env=cython_constants,
         build_dir=os.environ.get("CYTHON_BUILD_DIR", None),
     ),
diff --git a/src/pybind/rbd/rbd.pyx b/src/pybind/rbd/rbd.pyx
index cd491213e7f..1a4c6ded18f 100644
--- a/src/pybind/rbd/rbd.pyx
+++ b/src/pybind/rbd/rbd.pyx
@@ -1,3 +1,4 @@
+# cython: language_level=3
 # cython: embedsignature=True
 """
 This module is a thin wrapper around librbd.
diff --git a/src/pybind/rbd/setup.py b/src/pybind/rbd/setup.py
index f5e654287c5..237385c4b3c 100755
--- a/src/pybind/rbd/setup.py
+++ b/src/pybind/rbd/setup.py
@@ -155,7 +155,7 @@ else:
     sys.exit(1)
 
 cmdclass = {}
-compiler_directives={'language_level': sys.version_info.major}
+compiler_directives = {}
 try:
     from Cython.Build import cythonize
     from Cython.Distutils import build_ext
diff --git a/src/pybind/rgw/rgw.pyx b/src/pybind/rgw/rgw.pyx
index a2689d93185..5b4b8fba627 100644
--- a/src/pybind/rgw/rgw.pyx
+++ b/src/pybind/rgw/rgw.pyx
@@ -1,3 +1,4 @@
+# cython: language_level=3
 """
 This module is a thin wrapper around rgw_file.
 """
diff --git a/src/pybind/rgw/setup.py b/src/pybind/rgw/setup.py
index 8b9b9ac1fef..374167cbbca 100755
--- a/src/pybind/rgw/setup.py
+++ b/src/pybind/rgw/setup.py
@@ -226,7 +226,6 @@ setup(
                 **ext_args
             )
         ],
-        compiler_directives={'language_level': sys.version_info.major},
         build_dir=os.environ.get("CYTHON_BUILD_DIR", None),
         **cythonize_args
     ),
-- 
2.47.3