From 7fc9868b9d8aca119f1fe31c93102b32700dade5 Mon Sep 17 00:00:00 2001
From: Alexander Jaust <18347253+ajaust@users.noreply.github.com>
Date: Fri, 14 Nov 2025 14:35:38 +0100
Subject: [PATCH 1/2] Update RefTrace's garbage collection

Python 3.14 changed how object reference counts work [1], often
resulting in lower counts than before. In RefTrace, this reduces the
internal trace reference count from 3 to 2 for objects that may be
garbage collected.

[1]: https://docs.python.org/3/whatsnew/3.14.html#optimizations
---
 python/segyio/trace.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/python/segyio/trace.py b/python/segyio/trace.py
index 9c378af7..4d92afc8 100644
--- a/python/segyio/trace.py
+++ b/python/segyio/trace.py
@@ -435,8 +435,14 @@ def flush(self):
         be useful in certain contexts to provide stronger guarantees.
         """
         garbage = []
+        # If there are no external references to the data (so only internal
+        # references remain), the reference count is
+        # - 2 (Python >= 3.14)
+        # - 3 (Python < 3.14)
+        garbage_threshold = 3 if sys.version_info < (3, 14) else 2
+
         for i, (x, signature) in self.refs.items():
-            if sys.getrefcount(x) == 3:
+            if sys.getrefcount(x) == garbage_threshold:
                 garbage.append(i)
 
             if fingerprint(x) == signature: continue

From 252acc4c604a1f87306e27cabfa09502ae4d5858 Mon Sep 17 00:00:00 2001
From: Alexander Jaust <18347253+ajaust@users.noreply.github.com>
Date: Mon, 17 Nov 2025 07:19:36 +0100
Subject: [PATCH 2/2] Enable Python 3.14 build

---
 .github/workflows/wheels.yaml | 2 +-
 python/pyproject.toml         | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/wheels.yaml b/.github/workflows/wheels.yaml
index e9deb1b8..79173023 100644
--- a/.github/workflows/wheels.yaml
+++ b/.github/workflows/wheels.yaml
@@ -53,7 +53,7 @@ jobs:
           CIBW_ENVIRONMENT_WINDOWS: >
             CMAKE_GENERATOR="${{ matrix.cmake_generator }}"
             CMAKE_GENERATOR_PLATFORM="${{ matrix.cmake_generator_platform }}"
-          CIBW_SKIP: cp38-* cp314* *-musllinux_*
+          CIBW_SKIP: cp38-* *-musllinux_*
           CIBW_ARCHS: ${{ matrix.arch }}
         run: |
             python -m cibuildwheel --output-dir wheelhouse python/
diff --git a/python/pyproject.toml b/python/pyproject.toml
index d755154c..d3de9f62 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -71,6 +71,7 @@ classifiers = [
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
     "Topic :: Scientific/Engineering",
     "Topic :: Scientific/Engineering :: Physics",
     "Topic :: Software Development :: Libraries",