From be4b2a92feb2a2db91bd627db2ed49cdc3ad6521 Mon Sep 17 00:00:00 2001
From: "Jonathan G. Underwood" <jonathan.underwood@gmail.com>
Date: Sun, 26 Jan 2025 18:28:09 +0000
Subject: [PATCH 01/36] Fix publishing to pypi

---
 .github/workflows/build_dist.yml | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/build_dist.yml b/.github/workflows/build_dist.yml
index 1e815c1..3189d4a 100644
--- a/.github/workflows/build_dist.yml
+++ b/.github/workflows/build_dist.yml
@@ -80,8 +80,8 @@ jobs:
       - name: Save wheels
         uses: actions/upload-artifact@v4
         with:
-          name: cibw-wheels-${{ strategy.job-index }}.whl
-          path: wheelhouse/*.whl
+          name: cibw-wheels-${{ matrix.os }}-${{ strategy.job-index }}
+          path: ./wheelhouse/*.whl
 
   upload_pypi:
     name: Upload to PyPI
@@ -93,6 +93,7 @@ jobs:
         with:
           pattern: cibw-*
           path: dist
+          merge-multiple: true
       - uses: pypa/gh-action-pypi-publish@release/v1
         with:
           password: ${{ secrets.PYPI_API_TOKEN }}

From b5e5217b1a783da004efef0b0d2ea0ce64241b84 Mon Sep 17 00:00:00 2001
From: "Jonathan G. Underwood" <jonathan.underwood@gmail.com>
Date: Sun, 26 Jan 2025 19:42:04 +0000
Subject: [PATCH 02/36] Disable aarch64 builds due to compiler failure

---
 .github/workflows/build_dist.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/build_dist.yml b/.github/workflows/build_dist.yml
index 3189d4a..879db7d 100644
--- a/.github/workflows/build_dist.yml
+++ b/.github/workflows/build_dist.yml
@@ -69,7 +69,8 @@ jobs:
         uses: pypa/cibuildwheel@v2.21
         env:
           CIBW_ENVIRONMENT: PYLZ4_USE_SYSTEM_LZ4="False"
-          CIBW_ARCHS_LINUX: "x86_64 i686 aarch64"
+          # CIBW_ARCHS_LINUX: "x86_64 i686 aarch64"
+          CIBW_ARCHS_LINUX: "x86_64 i686"
           CIBW_ARCHS_MACOS: "auto64" # since we have both runner arches
           CIBW_ARCHS_WINDOWS: "AMD64 x86"
           CIBW_BUILD: ${{ matrix.cibw_build }}

From b20fdf35e659d697bcc82a81ac0aec6bf95bdbc3 Mon Sep 17 00:00:00 2001
From: Rudolf Kolbe <rkolbe96@gmail.com>
Date: Wed, 2 Apr 2025 00:03:43 +0200
Subject: [PATCH 03/36] build_dist workflow - (re)add arm support for Linux and
 Windows (#300)

This enables Arm support for Linux and Windows.
---
 .github/workflows/build_dist.yml | 46 +++++++++++++++++++++++++++-----
 1 file changed, 40 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/build_dist.yml b/.github/workflows/build_dist.yml
index 879db7d..ac70871 100644
--- a/.github/workflows/build_dist.yml
+++ b/.github/workflows/build_dist.yml
@@ -26,10 +26,8 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: 3.x
-      - name: Install setuptools
-        run: pip install setuptools
       - name: Build sdist
-        run: python setup.py sdist
+        run: pipx run build --sdist
       - name: Save sdist
         uses: actions/upload-artifact@v4
         with:
@@ -72,11 +70,47 @@ jobs:
           # CIBW_ARCHS_LINUX: "x86_64 i686 aarch64"
           CIBW_ARCHS_LINUX: "x86_64 i686"
           CIBW_ARCHS_MACOS: "auto64" # since we have both runner arches
-          CIBW_ARCHS_WINDOWS: "AMD64 x86"
+          CIBW_ARCHS_WINDOWS: "AMD64 x86 ARM64"
+          CIBW_BUILD: ${{ matrix.cibw_build }}
+          CIBW_SKIP: "cp*-musllinux*"
+          CIBW_TEST_COMMAND: "tox -c {project}"
+          CIBW_TEST_SKIP: "*-macosx_arm64 *-macosx_universal2:arm64 *-*linux_{ppc64le,s390x} *-win_arm64"
+          CIBW_BEFORE_BUILD: "python -m pip install -U pip && python -m pip install tox"
+      - name: Save wheels
+        uses: actions/upload-artifact@v4
+        with:
+          name: cibw-wheels-${{ matrix.os }}-${{ strategy.job-index }}
+          path: ./wheelhouse/*.whl
+
+  wheels_linux_arm:
+    name: Build wheels on ${{ matrix.os }} CIBW_BUILD=${{ matrix.cibw_build }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      # since multiple builds run at the same time, cancelling them all when one
+      # fails is wasteful and forces handling build problems one by one instead
+      # of showing a "full picture"
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-24.04-arm
+        cibw_build: [cp39-*, cp310-*, cp311-*, cp312-*, cp313-*]
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0 # To ensure tags are retrieved to enabe setuptools_scm to work
+      - name: Install Python 3.x
+        uses: actions/setup-python@v5
+        with:
+          python-version: 3.x
+      - name: Build wheels
+        uses: pypa/cibuildwheel@v2.21
+        env:
+          CIBW_ENVIRONMENT: PYLZ4_USE_SYSTEM_LZ4="False"
+          CIBW_ARCHS_LINUX: "aarch64 armv7l"
           CIBW_BUILD: ${{ matrix.cibw_build }}
           CIBW_SKIP: "cp*-musllinux*"
           CIBW_TEST_COMMAND: "tox -c {project}"
-          CIBW_TEST_SKIP: "*-macosx_arm64 *-macosx_universal2:arm64 *-*linux_{aarch64,ppc64le,s390x}"
           CIBW_BEFORE_BUILD: "python -m pip install -U pip && python -m pip install tox"
       - name: Save wheels
         uses: actions/upload-artifact@v4
@@ -86,7 +120,7 @@ jobs:
 
   upload_pypi:
     name: Upload to PyPI
-    needs: [sdist, wheels]
+    needs: [sdist, wheels, wheels_linux_arm]
     runs-on: ubuntu-latest
     if: startsWith(github.ref, 'refs/tags/')
     steps:

From 7633d8d48f4b8ff6da495e0c426ee292d00b97e4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edgar=20Andr=C3=A9s=20Margffoy=20Tuay?= <andfoy@gmail.com>
Date: Mon, 17 Mar 2025 16:09:57 -0500
Subject: [PATCH 04/36] Enable CPython free-threaded wheel builds

---
 .github/workflows/build_dist.yml | 11 ++++++++-
 lz4/_version.c                   |  4 +++
 lz4/block/_block.c               |  4 +++
 lz4/frame/_frame.c               |  4 +++
 lz4/stream/_stream.c             |  4 +++
 tests/block/conftest.py          | 18 ++++++++++++++
 tests/block/test_block_0.py      | 14 ++++++++++-
 tests/block/test_block_3.py      |  1 +
 tests/frame/test_frame_2.py      |  7 ++++++
 tests/frame/test_frame_5.py      |  8 +++---
 tests/frame/test_frame_6.py      | 42 +++++++++++++++++++-------------
 tests/frame/test_frame_8.py      |  8 +++---
 tests/frame/test_frame_9.py      | 25 +++++++++++--------
 tests/stream/test_stream_0.py    |  1 +
 tests/stream/test_stream_3.py    |  1 +
 15 files changed, 117 insertions(+), 35 deletions(-)

diff --git a/.github/workflows/build_dist.yml b/.github/workflows/build_dist.yml
index ac70871..b1e325c 100644
--- a/.github/workflows/build_dist.yml
+++ b/.github/workflows/build_dist.yml
@@ -48,7 +48,7 @@ jobs:
           - macos-13 # x86
           - macos-latest # arm
           - windows-latest
-        cibw_build: [cp39-*, cp310-*, cp311-*, cp312-*, cp313-*]
+        cibw_build: [cp39-*, cp310-*, cp311-*, cp312-*, cp313-*, cp313t-*]
     steps:
       - name: Check out repository
         uses: actions/checkout@v4
@@ -63,6 +63,14 @@ jobs:
         uses: docker/setup-qemu-action@v3
         with:
           platforms: all
+
+      - name: Setup free-threading variables
+        if: ${{ endsWith(matrix.cibw_build, 't-*') }}
+        shell: bash -l {0}
+        run: |
+          echo "CIBW_BEFORE_TEST=pip install pytest pytest-run-parallel" >> "$GITHUB_ENV"
+          echo "TOX_OVERRIDE=testenv.deps+=pytest-run-parallel" >> "$GITHUB_ENV"
+          echo "PYTEST_ADDOPTS=--parallel-threads=4" >> "$GITHUB_ENV"
       - name: Build wheels
         uses: pypa/cibuildwheel@v2.21
         env:
@@ -110,6 +118,7 @@ jobs:
           CIBW_ARCHS_LINUX: "aarch64 armv7l"
           CIBW_BUILD: ${{ matrix.cibw_build }}
           CIBW_SKIP: "cp*-musllinux*"
+          CIBW_ENABLE: cpython-freethreading
           CIBW_TEST_COMMAND: "tox -c {project}"
           CIBW_BEFORE_BUILD: "python -m pip install -U pip && python -m pip install tox"
       - name: Save wheels
diff --git a/lz4/_version.c b/lz4/_version.c
index c611f0b..7795241 100644
--- a/lz4/_version.c
+++ b/lz4/_version.c
@@ -113,5 +113,9 @@ PyInit__version(void)
   if (module == NULL)
     return NULL;
 
+  #ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(mod, Py_MOD_GIL_NOT_USED);
+  #endif
+
   return module;
 }
diff --git a/lz4/block/_block.c b/lz4/block/_block.c
index 3e904a0..daa9fd5 100644
--- a/lz4/block/_block.c
+++ b/lz4/block/_block.c
@@ -518,5 +518,9 @@ PyInit__block(void)
   Py_INCREF(LZ4BlockError);
   PyModule_AddObject(module, "LZ4BlockError", LZ4BlockError);
 
+  #ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(mod, Py_MOD_GIL_NOT_USED);
+  #endif
+
   return module;
 }
diff --git a/lz4/frame/_frame.c b/lz4/frame/_frame.c
index 3460665..d081cce 100644
--- a/lz4/frame/_frame.c
+++ b/lz4/frame/_frame.c
@@ -1677,5 +1677,9 @@ PyInit__frame(void)
   PyModule_AddIntConstant (module, "BLOCKSIZE_MAX1MB", LZ4F_max1MB);
   PyModule_AddIntConstant (module, "BLOCKSIZE_MAX4MB", LZ4F_max4MB);
 
+  #ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(mod, Py_MOD_GIL_NOT_USED);
+  #endif
+
   return module;
 }
diff --git a/lz4/stream/_stream.c b/lz4/stream/_stream.c
index 522fded..6351d96 100644
--- a/lz4/stream/_stream.c
+++ b/lz4/stream/_stream.c
@@ -1649,5 +1649,9 @@ PyInit__stream(void)
   Py_INCREF (LZ4StreamError);
   PyModule_AddObject (module, "LZ4StreamError", LZ4StreamError);
 
+  #ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(mod, Py_MOD_GIL_NOT_USED);
+  #endif
+
   return module;
 }
diff --git a/tests/block/conftest.py b/tests/block/conftest.py
index 0b3578e..b25c239 100644
--- a/tests/block/conftest.py
+++ b/tests/block/conftest.py
@@ -3,6 +3,24 @@
 import sys
 
 
+class EmptyMemoryView():
+    def __init__(self):
+        self.data = b''
+        self.view = None
+
+    def __buffer__(self, flags: int, /) -> memoryview:
+        if self.view is None:
+            self.view = memoryview(self.data)
+            return self.view
+
+    def __release_buffer__(self, buffer: memoryview, /):
+        breakpoint()
+        buffer.release()
+
+    def __len__(self):
+        return 0
+
+
 test_data = [
     (b''),
     (os.urandom(8 * 1024)),
diff --git a/tests/block/test_block_0.py b/tests/block/test_block_0.py
index 8fc0f48..31513b4 100644
--- a/tests/block/test_block_0.py
+++ b/tests/block/test_block_0.py
@@ -1,6 +1,9 @@
 import lz4.block
 from multiprocessing.pool import ThreadPool
 import sys
+import copy
+import inspect
+import pytest
 from functools import partial
 if sys.version_info <= (3, 2):
     import struct
@@ -79,10 +82,19 @@ def test_1(data, mode, store_size, c_return_bytearray, d_return_bytearray, dicti
 
 
 # Test multi threaded usage with all valid variations of input
+@pytest.mark.thread_unsafe
 def test_2(data, mode, store_size, dictionary):
     (c_kwargs, d_kwargs) = setup_kwargs(mode, store_size)
 
-    data_in = [data for i in range(32)]
+    def copy_buf(data):
+        data_x = data
+        if isinstance(data, memoryview):
+            data_x = memoryview(copy.deepcopy(data.obj))
+        elif isinstance(data, bytearray):
+            data_x = bytearray(copy.deepcopy(data.__buffer__(inspect.BufferFlags.FULL_RO).obj))
+        return data_x
+
+    data_in = [copy_buf(data) for i in range(32)]
 
     pool = ThreadPool(2)
     rt = partial(roundtrip, c_kwargs=c_kwargs,
diff --git a/tests/block/test_block_3.py b/tests/block/test_block_3.py
index 3fcb175..88461b7 100644
--- a/tests/block/test_block_3.py
+++ b/tests/block/test_block_3.py
@@ -18,6 +18,7 @@ def data(request):
     return request.param
 
 
+@pytest.mark.thread_unsafe
 def test_block_decompress_mem_usage(data):
     tracemalloc = pytest.importorskip('tracemalloc')
 
diff --git a/tests/frame/test_frame_2.py b/tests/frame/test_frame_2.py
index 80b44b8..14a3f6b 100644
--- a/tests/frame/test_frame_2.py
+++ b/tests/frame/test_frame_2.py
@@ -1,6 +1,8 @@
 import lz4.frame as lz4frame
 import pytest
 import os
+import copy
+import inspect
 import sys
 from . helpers import (
     get_chunked,
@@ -41,6 +43,11 @@ def test_roundtrip_chunked(data, block_size, block_linked,
 
     data, c_chunks, d_chunks = data
 
+    if isinstance(data, memoryview):
+        data = memoryview(copy.deepcopy(data.obj))
+    elif isinstance(data, bytearray):
+        data = bytearray(copy.deepcopy(data.__buffer__(inspect.BufferFlags.FULL_RO).obj))
+
     c_context = lz4frame.create_compression_context()
 
     kwargs = {}
diff --git a/tests/frame/test_frame_5.py b/tests/frame/test_frame_5.py
index 05daf28..4083646 100644
--- a/tests/frame/test_frame_5.py
+++ b/tests/frame/test_frame_5.py
@@ -8,6 +8,8 @@
     (b'a' * 1024 * 1024),
 ]
 
+pytestmark = pytest.mark.thread_unsafe
+
 
 @pytest.fixture(
     params=test_data,
@@ -66,17 +68,17 @@ def test_frame_decompress_chunk_mem_usage(data):
             prev_snapshot = snapshot
 
 
-def test_frame_open_decompress_mem_usage(data):
+def test_frame_open_decompress_mem_usage(tmp_path, data):
     tracemalloc = pytest.importorskip('tracemalloc')
     tracemalloc.start()
 
-    with lz4.frame.open('test.lz4', 'w') as f:
+    with lz4.frame.open(tmp_path / 'test.lz4', 'w') as f:
         f.write(data)
 
     prev_snapshot = None
 
     for i in range(1000):
-        with lz4.frame.open('test.lz4', 'r') as f:
+        with lz4.frame.open(tmp_path / 'test.lz4', 'r') as f:
             decompressed = f.read()  # noqa: F841
 
         if i % 100 == 0:
diff --git a/tests/frame/test_frame_6.py b/tests/frame/test_frame_6.py
index c20a4f3..4f4185e 100644
--- a/tests/frame/test_frame_6.py
+++ b/tests/frame/test_frame_6.py
@@ -1,5 +1,6 @@
 import os
 import pytest
+import threading
 import lz4.frame as lz4frame
 
 test_data = [
@@ -33,40 +34,45 @@ def compression_level(request):
     return request.param
 
 
-def test_lz4frame_open_write(data):
-    with lz4frame.open('testfile', mode='wb') as fp:
+def test_lz4frame_open_write(tmp_path, data):
+    thread_id = threading.get_native_id()
+    with lz4frame.open(tmp_path / f'testfile_{thread_id}', mode='wb') as fp:
         fp.write(data)
 
 
-def test_lz4frame_open_write_read_defaults(data):
-    with lz4frame.open('testfile', mode='wb') as fp:
+def test_lz4frame_open_write_read_defaults(tmp_path, data):
+    thread_id = threading.get_native_id()
+    with lz4frame.open(tmp_path / f'testfile_{thread_id}', mode='wb') as fp:
         fp.write(data)
-    with lz4frame.open('testfile', mode='r') as fp:
+    with lz4frame.open(tmp_path / f'testfile_{thread_id}', mode='r') as fp:
         data_out = fp.read()
     assert data_out == data
 
 
-def test_lz4frame_open_write_read_text():
+def test_lz4frame_open_write_read_text(tmp_path):
     data = u'This is a test string'
-    with lz4frame.open('testfile', mode='wt') as fp:
+    thread_id = threading.get_native_id()
+    with lz4frame.open(tmp_path / f'testfile_{thread_id}', mode='wt') as fp:
         fp.write(data)
-    with lz4frame.open('testfile', mode='rt') as fp:
+    with lz4frame.open(tmp_path / f'testfile_{thread_id}', mode='rt') as fp:
         data_out = fp.read()
     assert data_out == data
 
 
-def test_lz4frame_open_write_read_text_iter():
+def test_lz4frame_open_write_read_text_iter(tmp_path):
     data = u'This is a test string'
-    with lz4frame.open('testfile', mode='wt') as fp:
+    thread_id = threading.get_native_id()
+    with lz4frame.open(tmp_path / f'testfile_{thread_id}', mode='wt') as fp:
         fp.write(data)
     data_out = ''
-    with lz4frame.open('testfile', mode='rt') as fp:
+    with lz4frame.open(tmp_path / f'testfile_{thread_id}', mode='rt') as fp:
         for line in fp:
             data_out += line
     assert data_out == data
 
 
 def test_lz4frame_open_write_read(
+        tmp_path,
         data,
         compression_level,
         block_linked,
@@ -91,29 +97,31 @@ def test_lz4frame_open_write_read(
     kwargs['return_bytearray'] = return_bytearray
     kwargs['mode'] = 'wb'
 
-    with lz4frame.open('testfile', **kwargs) as fp:
+    thread_id = threading.get_native_id()
+    with lz4frame.open(tmp_path / f'testfile_{thread_id}', **kwargs) as fp:
         fp.write(data)
 
-    with lz4frame.open('testfile', mode='r') as fp:
+    with lz4frame.open(tmp_path / f'testfile_{thread_id}', mode='r') as fp:
         data_out = fp.read()
 
     assert data_out == data
 
 
-def test_lz4frame_flush():
+def test_lz4frame_flush(tmp_path):
     data_1 = b"This is a..."
     data_2 = b" test string!"
+    thread_id = threading.get_native_id()
 
-    with lz4frame.open("testfile", mode="w") as fp_write:
+    with lz4frame.open(tmp_path / f"testfile_{thread_id}", mode="w") as fp_write:
         fp_write.write(data_1)
         fp_write.flush()
 
         fp_write.write(data_2)
 
-        with lz4frame.open("testfile", mode="r") as fp_read:
+        with lz4frame.open(tmp_path / f"testfile_{thread_id}", mode="r") as fp_read:
             assert fp_read.read() == data_1
 
         fp_write.flush()
 
-        with lz4frame.open("testfile", mode="r") as fp_read:
+        with lz4frame.open(tmp_path / f"testfile_{thread_id}", mode="r") as fp_read:
             assert fp_read.read() == data_1 + data_2
diff --git a/tests/frame/test_frame_8.py b/tests/frame/test_frame_8.py
index 159534a..cfaeaac 100644
--- a/tests/frame/test_frame_8.py
+++ b/tests/frame/test_frame_8.py
@@ -1,12 +1,14 @@
+import threading
 import lz4.frame as lz4frame
 
 
-def test_lz4frame_open_write_read_text_iter():
+def test_lz4frame_open_write_read_text_iter(tmp_path):
     data = u'This is a test string'
-    with lz4frame.open('testfile', mode='wt') as fp:
+    thread_id = threading.get_native_id()
+    with lz4frame.open(tmp_path / f'testfile_{thread_id}', mode='wt') as fp:
         fp.write(data)
     data_out = ''
-    with lz4frame.open('testfile', mode='rt') as fp:
+    with lz4frame.open(tmp_path / f'testfile_{thread_id}', mode='rt') as fp:
         for line in fp:
             data_out += line
     assert data_out == data
diff --git a/tests/frame/test_frame_9.py b/tests/frame/test_frame_9.py
index 5143393..c5335ae 100644
--- a/tests/frame/test_frame_9.py
+++ b/tests/frame/test_frame_9.py
@@ -3,11 +3,12 @@
 import io
 import pickle
 import sys
+import threading
 import lz4.frame
 import pytest
 
 
-def test_issue_172_1():
+def test_issue_172_1(tmp_path):
     """Test reproducer for issue 172
 
     Issue 172 is a reported failure occurring on Windows 10 only. This bug was
@@ -16,34 +17,38 @@ def test_issue_172_1():
 
     """
     input_data = 8 * os.urandom(1024)
-    with lz4.frame.open('testfile_small', 'wb') as fp:
+    thread_id = threading.get_native_id()
+
+    with lz4.frame.open(tmp_path / f'testfile_small_{thread_id}', 'wb') as fp:
         bytes_written = fp.write(input_data)  # noqa: F841
 
-    with lz4.frame.open('testfile_small', 'rb') as fp:
+    with lz4.frame.open(tmp_path / f'testfile_small_{thread_id}', 'rb') as fp:
         data = fp.read(10)
         assert len(data) == 10
 
 
-def test_issue_172_2():
+def test_issue_172_2(tmp_path):
     input_data = 9 * os.urandom(1024)
-    with lz4.frame.open('testfile_small', 'w') as fp:
+    thread_id = threading.get_native_id()
+    with lz4.frame.open(tmp_path / f'testfile_small_{thread_id}', 'w') as fp:
         bytes_written = fp.write(input_data)  # noqa: F841
 
-    with lz4.frame.open('testfile_small', 'r') as fp:
+    with lz4.frame.open(tmp_path / f'testfile_small_{thread_id}', 'r') as fp:
         data = fp.read(10)
         assert len(data) == 10
 
 
-def test_issue_172_3():
+def test_issue_172_3(tmp_path):
     input_data = 9 * os.urandom(1024)
-    with lz4.frame.open('testfile_small', 'wb') as fp:
+    thread_id = threading.get_native_id()
+    with lz4.frame.open(tmp_path / f'testfile_small_{thread_id}', 'wb') as fp:
         bytes_written = fp.write(input_data)  # noqa: F841
 
-    with lz4.frame.open('testfile_small', 'rb') as fp:
+    with lz4.frame.open(tmp_path / f'testfile_small_{thread_id}', 'rb') as fp:
         data = fp.read(10)
         assert len(data) == 10
 
-    with lz4.frame.open('testfile_small', 'rb') as fp:
+    with lz4.frame.open(tmp_path / f'testfile_small_{thread_id}', 'rb') as fp:
         data = fp.read(16 * 1024 - 1)
         assert len(data) == 9 * 1024
         assert data == input_data
diff --git a/tests/stream/test_stream_0.py b/tests/stream/test_stream_0.py
index 03b19f3..cac07bd 100644
--- a/tests/stream/test_stream_0.py
+++ b/tests/stream/test_stream_0.py
@@ -96,6 +96,7 @@ def setup_kwargs(strategy, mode, buffer_size, store_comp_size,
 
 
 # Test single threaded usage with all valid variations of input
+@pytest.mark.thread_unsafe
 def test_1(data, strategy, mode, buffer_size, store_comp_size,
            c_return_bytearray, d_return_bytearray, dictionary):
     if buffer_size >= (1 << (8 * store_comp_size['store_comp_size'])):
diff --git a/tests/stream/test_stream_3.py b/tests/stream/test_stream_3.py
index 2b52d6b..fed93d2 100644
--- a/tests/stream/test_stream_3.py
+++ b/tests/stream/test_stream_3.py
@@ -71,6 +71,7 @@ def data(request):
     return request.param
 
 
+@pytest.mark.thread_unsafe
 def test_block_decompress_mem_usage(data, buffer_size):
     kwargs = {
         'strategy': "double_buffer",

From 0f5c05e7ccfc35f5f1d2d61cebb9f40480116444 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edgar=20Andr=C3=A9s=20Margffoy=20Tuay?= <andfoy@gmail.com>
Date: Tue, 1 Apr 2025 11:42:55 -0500
Subject: [PATCH 05/36] Update cibuildwheel version

---
 .github/workflows/build_dist.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/build_dist.yml b/.github/workflows/build_dist.yml
index b1e325c..38f40dd 100644
--- a/.github/workflows/build_dist.yml
+++ b/.github/workflows/build_dist.yml
@@ -72,7 +72,7 @@ jobs:
           echo "TOX_OVERRIDE=testenv.deps+=pytest-run-parallel" >> "$GITHUB_ENV"
           echo "PYTEST_ADDOPTS=--parallel-threads=4" >> "$GITHUB_ENV"
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.21
+        uses: pypa/cibuildwheel@v2.23.2
         env:
           CIBW_ENVIRONMENT: PYLZ4_USE_SYSTEM_LZ4="False"
           # CIBW_ARCHS_LINUX: "x86_64 i686 aarch64"

From c0b3bb5c236cec8e1563411228d5133893c1a7f3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edgar=20Andr=C3=A9s=20Margffoy=20Tuay?= <andfoy@gmail.com>
Date: Tue, 1 Apr 2025 12:32:44 -0500
Subject: [PATCH 06/36] Variable misspell fix

---
 lz4/_version.c       | 2 +-
 lz4/block/_block.c   | 2 +-
 lz4/frame/_frame.c   | 2 +-
 lz4/stream/_stream.c | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/lz4/_version.c b/lz4/_version.c
index 7795241..af606ab 100644
--- a/lz4/_version.c
+++ b/lz4/_version.c
@@ -114,7 +114,7 @@ PyInit__version(void)
     return NULL;
 
   #ifdef Py_GIL_DISABLED
-    PyUnstable_Module_SetGIL(mod, Py_MOD_GIL_NOT_USED);
+    PyUnstable_Module_SetGIL(module, Py_MOD_GIL_NOT_USED);
   #endif
 
   return module;
diff --git a/lz4/block/_block.c b/lz4/block/_block.c
index daa9fd5..993cc44 100644
--- a/lz4/block/_block.c
+++ b/lz4/block/_block.c
@@ -519,7 +519,7 @@ PyInit__block(void)
   PyModule_AddObject(module, "LZ4BlockError", LZ4BlockError);
 
   #ifdef Py_GIL_DISABLED
-    PyUnstable_Module_SetGIL(mod, Py_MOD_GIL_NOT_USED);
+    PyUnstable_Module_SetGIL(module, Py_MOD_GIL_NOT_USED);
   #endif
 
   return module;
diff --git a/lz4/frame/_frame.c b/lz4/frame/_frame.c
index d081cce..e62c72c 100644
--- a/lz4/frame/_frame.c
+++ b/lz4/frame/_frame.c
@@ -1678,7 +1678,7 @@ PyInit__frame(void)
   PyModule_AddIntConstant (module, "BLOCKSIZE_MAX4MB", LZ4F_max4MB);
 
   #ifdef Py_GIL_DISABLED
-    PyUnstable_Module_SetGIL(mod, Py_MOD_GIL_NOT_USED);
+    PyUnstable_Module_SetGIL(module, Py_MOD_GIL_NOT_USED);
   #endif
 
   return module;
diff --git a/lz4/stream/_stream.c b/lz4/stream/_stream.c
index 6351d96..f0dfad5 100644
--- a/lz4/stream/_stream.c
+++ b/lz4/stream/_stream.c
@@ -1650,7 +1650,7 @@ PyInit__stream(void)
   PyModule_AddObject (module, "LZ4StreamError", LZ4StreamError);
 
   #ifdef Py_GIL_DISABLED
-    PyUnstable_Module_SetGIL(mod, Py_MOD_GIL_NOT_USED);
+    PyUnstable_Module_SetGIL(module, Py_MOD_GIL_NOT_USED);
   #endif
 
   return module;

From 99321aa0166e6398276988a4d8c800568239177b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edgar=20Andr=C3=A9s=20Margffoy=20Tuay?= <andfoy@gmail.com>
Date: Tue, 1 Apr 2025 14:38:33 -0500
Subject: [PATCH 07/36] Update environment variables

---
 .github/workflows/build_dist.yml | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/build_dist.yml b/.github/workflows/build_dist.yml
index 38f40dd..77862f1 100644
--- a/.github/workflows/build_dist.yml
+++ b/.github/workflows/build_dist.yml
@@ -69,12 +69,15 @@ jobs:
         shell: bash -l {0}
         run: |
           echo "CIBW_BEFORE_TEST=pip install pytest pytest-run-parallel" >> "$GITHUB_ENV"
-          echo "TOX_OVERRIDE=testenv.deps+=pytest-run-parallel" >> "$GITHUB_ENV"
-          echo "PYTEST_ADDOPTS=--parallel-threads=4" >> "$GITHUB_ENV"
+          echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False PYTEST_ADDOPTS=--parallel-threads=4 TOX_OVERRIDE=testenv.deps+=pytest-run-parallel;testenv.pass_env=PYTEST_ADDOPTS"
+      - name: Setup environment
+        if: ${{ !endsWith(matrix.cibw_build, 't-*') }}
+        shell: bash -l {0}
+        run: |
+          echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4="False" >> "$GITHUB_ENV"
       - name: Build wheels
         uses: pypa/cibuildwheel@v2.23.2
         env:
-          CIBW_ENVIRONMENT: PYLZ4_USE_SYSTEM_LZ4="False"
           # CIBW_ARCHS_LINUX: "x86_64 i686 aarch64"
           CIBW_ARCHS_LINUX: "x86_64 i686"
           CIBW_ARCHS_MACOS: "auto64" # since we have both runner arches

From 2258e28190e3f037617ae48fe329035b60c28ae6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edgar=20Andr=C3=A9s=20Margffoy=20Tuay?= <andfoy@gmail.com>
Date: Tue, 1 Apr 2025 14:44:07 -0500
Subject: [PATCH 08/36] Ensure CIBW_ENVIRONMENT is set

---
 .github/workflows/build_dist.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/build_dist.yml b/.github/workflows/build_dist.yml
index 77862f1..0c659e3 100644
--- a/.github/workflows/build_dist.yml
+++ b/.github/workflows/build_dist.yml
@@ -69,12 +69,12 @@ jobs:
         shell: bash -l {0}
         run: |
           echo "CIBW_BEFORE_TEST=pip install pytest pytest-run-parallel" >> "$GITHUB_ENV"
-          echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False PYTEST_ADDOPTS=--parallel-threads=4 TOX_OVERRIDE=testenv.deps+=pytest-run-parallel;testenv.pass_env=PYTEST_ADDOPTS"
+          echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False PYTEST_ADDOPTS=--parallel-threads=4 TOX_OVERRIDE=testenv.deps+=pytest-run-parallel;testenv.pass_env=PYTEST_ADDOPTS" >> "$GITHUB_ENV"
       - name: Setup environment
         if: ${{ !endsWith(matrix.cibw_build, 't-*') }}
         shell: bash -l {0}
         run: |
-          echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4="False" >> "$GITHUB_ENV"
+          echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False" >> "$GITHUB_ENV"
       - name: Build wheels
         uses: pypa/cibuildwheel@v2.23.2
         env:

From a20d167678f4fec73d41e811f809ec2f1799bab6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edgar=20Andr=C3=A9s=20Margffoy=20Tuay?= <andfoy@gmail.com>
Date: Tue, 1 Apr 2025 15:28:12 -0500
Subject: [PATCH 09/36] Pass tox overrides through CLI

---
 .github/workflows/build_dist.yml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/build_dist.yml b/.github/workflows/build_dist.yml
index 0c659e3..62d84da 100644
--- a/.github/workflows/build_dist.yml
+++ b/.github/workflows/build_dist.yml
@@ -69,12 +69,14 @@ jobs:
         shell: bash -l {0}
         run: |
           echo "CIBW_BEFORE_TEST=pip install pytest pytest-run-parallel" >> "$GITHUB_ENV"
-          echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False PYTEST_ADDOPTS=--parallel-threads=4 TOX_OVERRIDE=testenv.deps+=pytest-run-parallel;testenv.pass_env=PYTEST_ADDOPTS" >> "$GITHUB_ENV"
+          echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False PYTEST_ADDOPTS=--parallel-threads=4" >> "$GITHUB_ENV"
+          echo "CIBW_TEST_COMMAND=tox -x testenv.deps+=pytest-run-parallel -x testenv.pass_env+=PYTEST_ADDOPTS -c {project}" >> "$GITHUB_ENV"
       - name: Setup environment
         if: ${{ !endsWith(matrix.cibw_build, 't-*') }}
         shell: bash -l {0}
         run: |
           echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False" >> "$GITHUB_ENV"
+          echo "CIBW_TEST_COMMAND=tox -c {project}" >> "$GITHUB_ENV"
       - name: Build wheels
         uses: pypa/cibuildwheel@v2.23.2
         env:

From cc5c9b18002863ebb4fcff7ff58db05cdd3e0db3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edgar=20Andr=C3=A9s=20Margffoy=20Tuay?= <andfoy@gmail.com>
Date: Tue, 1 Apr 2025 15:39:14 -0500
Subject: [PATCH 10/36] Ensure test command is applied

---
 .github/workflows/build_dist.yml | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/build_dist.yml b/.github/workflows/build_dist.yml
index 62d84da..e6541dd 100644
--- a/.github/workflows/build_dist.yml
+++ b/.github/workflows/build_dist.yml
@@ -84,9 +84,9 @@ jobs:
           CIBW_ARCHS_LINUX: "x86_64 i686"
           CIBW_ARCHS_MACOS: "auto64" # since we have both runner arches
           CIBW_ARCHS_WINDOWS: "AMD64 x86 ARM64"
+          CIBW_ENABLE: cpython-freethreading
           CIBW_BUILD: ${{ matrix.cibw_build }}
           CIBW_SKIP: "cp*-musllinux*"
-          CIBW_TEST_COMMAND: "tox -c {project}"
           CIBW_TEST_SKIP: "*-macosx_arm64 *-macosx_universal2:arm64 *-*linux_{ppc64le,s390x} *-win_arm64"
           CIBW_BEFORE_BUILD: "python -m pip install -U pip && python -m pip install tox"
       - name: Save wheels
@@ -106,7 +106,7 @@ jobs:
       matrix:
         os:
           - ubuntu-24.04-arm
-        cibw_build: [cp39-*, cp310-*, cp311-*, cp312-*, cp313-*]
+        cibw_build: [cp39-*, cp310-*, cp311-*, cp312-*, cp313-*, cp313t-*]
     steps:
       - name: Check out repository
         uses: actions/checkout@v4
@@ -116,15 +116,26 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: 3.x
+      - name: Setup free-threading variables
+        if: ${{ endsWith(matrix.cibw_build, 't-*') }}
+        shell: bash -l {0}
+        run: |
+          echo "CIBW_BEFORE_TEST=pip install pytest pytest-run-parallel" >> "$GITHUB_ENV"
+          echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False PYTEST_ADDOPTS=--parallel-threads=4" >> "$GITHUB_ENV"
+          echo "CIBW_TEST_COMMAND=tox -x testenv.deps+=pytest-run-parallel -x testenv.pass_env+=PYTEST_ADDOPTS -c {project}" >> "$GITHUB_ENV"
+      - name: Setup environment
+        if: ${{ !endsWith(matrix.cibw_build, 't-*') }}
+        shell: bash -l {0}
+        run: |
+          echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False" >> "$GITHUB_ENV"
+          echo "CIBW_TEST_COMMAND=tox -c {project}" >> "$GITHUB_ENV"
       - name: Build wheels
         uses: pypa/cibuildwheel@v2.21
         env:
-          CIBW_ENVIRONMENT: PYLZ4_USE_SYSTEM_LZ4="False"
           CIBW_ARCHS_LINUX: "aarch64 armv7l"
           CIBW_BUILD: ${{ matrix.cibw_build }}
           CIBW_SKIP: "cp*-musllinux*"
           CIBW_ENABLE: cpython-freethreading
-          CIBW_TEST_COMMAND: "tox -c {project}"
           CIBW_BEFORE_BUILD: "python -m pip install -U pip && python -m pip install tox"
       - name: Save wheels
         uses: actions/upload-artifact@v4

From 40bcbd8c88c27416b9dc430e65e7f07741c7dfa5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edgar=20Andr=C3=A9s=20Margffoy=20Tuay?= <andfoy@gmail.com>
Date: Tue, 1 Apr 2025 15:57:10 -0500
Subject: [PATCH 11/36] Check why using temp paths increase memory usage

---
 tests/frame/test_frame_5.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tests/frame/test_frame_5.py b/tests/frame/test_frame_5.py
index 4083646..dcbe4ae 100644
--- a/tests/frame/test_frame_5.py
+++ b/tests/frame/test_frame_5.py
@@ -68,17 +68,17 @@ def test_frame_decompress_chunk_mem_usage(data):
             prev_snapshot = snapshot
 
 
-def test_frame_open_decompress_mem_usage(tmp_path, data):
+def test_frame_open_decompress_mem_usage(data):
     tracemalloc = pytest.importorskip('tracemalloc')
     tracemalloc.start()
 
-    with lz4.frame.open(tmp_path / 'test.lz4', 'w') as f:
+    with lz4.frame.open('test.lz4', 'w') as f:
         f.write(data)
 
     prev_snapshot = None
 
     for i in range(1000):
-        with lz4.frame.open(tmp_path / 'test.lz4', 'r') as f:
+        with lz4.frame.open('test.lz4', 'r') as f:
             decompressed = f.read()  # noqa: F841
 
         if i % 100 == 0:

From ad3ec0d5810615afc9dff3d2b18f6d29d2066223 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edgar=20Andr=C3=A9s=20Margffoy=20Tuay?= <andfoy@gmail.com>
Date: Wed, 2 Apr 2025 17:13:03 -0500
Subject: [PATCH 12/36] Copy bytearrays directly

---
 tests/block/conftest.py     | 18 ------------------
 tests/block/test_block_0.py |  3 ++-
 tests/frame/test_frame_2.py |  4 +++-
 3 files changed, 5 insertions(+), 20 deletions(-)

diff --git a/tests/block/conftest.py b/tests/block/conftest.py
index b25c239..0b3578e 100644
--- a/tests/block/conftest.py
+++ b/tests/block/conftest.py
@@ -3,24 +3,6 @@
 import sys
 
 
-class EmptyMemoryView():
-    def __init__(self):
-        self.data = b''
-        self.view = None
-
-    def __buffer__(self, flags: int, /) -> memoryview:
-        if self.view is None:
-            self.view = memoryview(self.data)
-            return self.view
-
-    def __release_buffer__(self, buffer: memoryview, /):
-        breakpoint()
-        buffer.release()
-
-    def __len__(self):
-        return 0
-
-
 test_data = [
     (b''),
     (os.urandom(8 * 1024)),
diff --git a/tests/block/test_block_0.py b/tests/block/test_block_0.py
index 31513b4..8a22e57 100644
--- a/tests/block/test_block_0.py
+++ b/tests/block/test_block_0.py
@@ -91,7 +91,8 @@ def copy_buf(data):
         if isinstance(data, memoryview):
             data_x = memoryview(copy.deepcopy(data.obj))
         elif isinstance(data, bytearray):
-            data_x = bytearray(copy.deepcopy(data.__buffer__(inspect.BufferFlags.FULL_RO).obj))
+            data_x = bytearray()
+            data_x[:] = data
         return data_x
 
     data_in = [copy_buf(data) for i in range(32)]
diff --git a/tests/frame/test_frame_2.py b/tests/frame/test_frame_2.py
index 14a3f6b..f7e6fa3 100644
--- a/tests/frame/test_frame_2.py
+++ b/tests/frame/test_frame_2.py
@@ -46,7 +46,9 @@ def test_roundtrip_chunked(data, block_size, block_linked,
     if isinstance(data, memoryview):
         data = memoryview(copy.deepcopy(data.obj))
     elif isinstance(data, bytearray):
-        data = bytearray(copy.deepcopy(data.__buffer__(inspect.BufferFlags.FULL_RO).obj))
+        data_2 = bytearray()
+        data_2[:] = data
+        data = data_2
 
     c_context = lz4frame.create_compression_context()
 

From 7a88fb9351ddfd65936dab78b79e41e910add51c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edgar=20Andr=C3=A9s=20Margffoy=20Tuay?= <andfoy@gmail.com>
Date: Wed, 2 Apr 2025 17:22:17 -0500
Subject: [PATCH 13/36] Remove unused import

---
 tests/block/test_block_0.py | 1 -
 tests/frame/test_frame_2.py | 1 -
 2 files changed, 2 deletions(-)

diff --git a/tests/block/test_block_0.py b/tests/block/test_block_0.py
index 8a22e57..f2c3cd1 100644
--- a/tests/block/test_block_0.py
+++ b/tests/block/test_block_0.py
@@ -2,7 +2,6 @@
 from multiprocessing.pool import ThreadPool
 import sys
 import copy
-import inspect
 import pytest
 from functools import partial
 if sys.version_info <= (3, 2):
diff --git a/tests/frame/test_frame_2.py b/tests/frame/test_frame_2.py
index f7e6fa3..230867e 100644
--- a/tests/frame/test_frame_2.py
+++ b/tests/frame/test_frame_2.py
@@ -2,7 +2,6 @@
 import pytest
 import os
 import copy
-import inspect
 import sys
 from . helpers import (
     get_chunked,

From 737bac1a663c4d15347e98359b7a11c7ddc96f40 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edgar=20Andr=C3=A9s=20Margffoy=20Tuay?= <andfoy@gmail.com>
Date: Wed, 2 Apr 2025 17:41:35 -0500
Subject: [PATCH 14/36] Copy memoryview on test_1

---
 tests/block/test_block_0.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tests/block/test_block_0.py b/tests/block/test_block_0.py
index f2c3cd1..561b185 100644
--- a/tests/block/test_block_0.py
+++ b/tests/block/test_block_0.py
@@ -70,6 +70,13 @@ def setup_kwargs(mode, store_size, c_return_bytearray=None, d_return_bytearray=N
 
 # Test single threaded usage with all valid variations of input
 def test_1(data, mode, store_size, c_return_bytearray, d_return_bytearray, dictionary):
+    if isinstance(data, memoryview):
+        data = memoryview(copy.deepcopy(data.obj))
+    elif isinstance(data, bytearray):
+        data_x = bytearray()
+        data_x[:] = data
+        data = data_x
+
     (c_kwargs, d_kwargs) = setup_kwargs(
         mode, store_size, c_return_bytearray, d_return_bytearray)
 

From b7c0b665eb70706a1c6e334e54a1b9fa18c96cbf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edgar=20Andr=C3=A9s=20Margffoy=20Tuay?= <andfoy@gmail.com>
Date: Thu, 3 Apr 2025 12:26:53 -0500
Subject: [PATCH 15/36] Upgrade pypa/cibuildwheel action in arm64 job

---
 .github/workflows/build_dist.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/build_dist.yml b/.github/workflows/build_dist.yml
index e6541dd..4af62b6 100644
--- a/.github/workflows/build_dist.yml
+++ b/.github/workflows/build_dist.yml
@@ -130,7 +130,7 @@ jobs:
           echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False" >> "$GITHUB_ENV"
           echo "CIBW_TEST_COMMAND=tox -c {project}" >> "$GITHUB_ENV"
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.21
+        uses: pypa/cibuildwheel@v2.23.2
         env:
           CIBW_ARCHS_LINUX: "aarch64 armv7l"
           CIBW_BUILD: ${{ matrix.cibw_build }}

From 61957cb0dacf51b4cf0f351b740119bb576428b4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edgar=20Andr=C3=A9s=20Margffoy=20Tuay?= <andfoy@gmail.com>
Date: Thu, 3 Apr 2025 14:45:57 -0500
Subject: [PATCH 16/36] CI: set parallelism to 2 in aarch64

---
 .github/workflows/build_dist.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/build_dist.yml b/.github/workflows/build_dist.yml
index 4af62b6..e327680 100644
--- a/.github/workflows/build_dist.yml
+++ b/.github/workflows/build_dist.yml
@@ -121,7 +121,7 @@ jobs:
         shell: bash -l {0}
         run: |
           echo "CIBW_BEFORE_TEST=pip install pytest pytest-run-parallel" >> "$GITHUB_ENV"
-          echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False PYTEST_ADDOPTS=--parallel-threads=4" >> "$GITHUB_ENV"
+          echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False PYTEST_ADDOPTS=--parallel-threads=2" >> "$GITHUB_ENV"
           echo "CIBW_TEST_COMMAND=tox -x testenv.deps+=pytest-run-parallel -x testenv.pass_env+=PYTEST_ADDOPTS -c {project}" >> "$GITHUB_ENV"
       - name: Setup environment
         if: ${{ !endsWith(matrix.cibw_build, 't-*') }}

From 689440cdabe92a8a407cf96e43847eec1b956ec0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edgar=20Andr=C3=A9s=20Margffoy=20Tuay?= <andfoy@gmail.com>
Date: Thu, 3 Apr 2025 15:11:26 -0500
Subject: [PATCH 17/36] CI: disable pytest-run-parallel altogeogether in
 aarch64

---
 .github/workflows/build_dist.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/build_dist.yml b/.github/workflows/build_dist.yml
index e327680..6765e99 100644
--- a/.github/workflows/build_dist.yml
+++ b/.github/workflows/build_dist.yml
@@ -121,7 +121,7 @@ jobs:
         shell: bash -l {0}
         run: |
           echo "CIBW_BEFORE_TEST=pip install pytest pytest-run-parallel" >> "$GITHUB_ENV"
-          echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False PYTEST_ADDOPTS=--parallel-threads=2" >> "$GITHUB_ENV"
+          echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False PYTEST_ADDOPTS=--parallel-threads=1" >> "$GITHUB_ENV"
           echo "CIBW_TEST_COMMAND=tox -x testenv.deps+=pytest-run-parallel -x testenv.pass_env+=PYTEST_ADDOPTS -c {project}" >> "$GITHUB_ENV"
       - name: Setup environment
         if: ${{ !endsWith(matrix.cibw_build, 't-*') }}

From e54341fac7984222faec6e789ddc97486e6e88d8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edgar=20Andr=C3=A9s=20Margffoy=20Tuay?= <andfoy@gmail.com>
Date: Thu, 3 Apr 2025 15:24:42 -0500
Subject: [PATCH 18/36] CI: disable armv7l

---
 .github/workflows/build_dist.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/build_dist.yml b/.github/workflows/build_dist.yml
index 6765e99..9b9964b 100644
--- a/.github/workflows/build_dist.yml
+++ b/.github/workflows/build_dist.yml
@@ -132,7 +132,7 @@ jobs:
       - name: Build wheels
         uses: pypa/cibuildwheel@v2.23.2
         env:
-          CIBW_ARCHS_LINUX: "aarch64 armv7l"
+          CIBW_ARCHS_LINUX: "aarch64"
           CIBW_BUILD: ${{ matrix.cibw_build }}
           CIBW_SKIP: "cp*-musllinux*"
           CIBW_ENABLE: cpython-freethreading

From 022d53815abf97e6eb49d0be3a27c74541c782ec Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edgar=20Andr=C3=A9s=20Margffoy=20Tuay?= <andfoy@gmail.com>
Date: Wed, 9 Apr 2025 16:43:32 -0500
Subject: [PATCH 19/36] Address review comments

---
 .github/workflows/build_dist.yml | 2 ++
 tests/block/test_block_0.py      | 3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/build_dist.yml b/.github/workflows/build_dist.yml
index 9b9964b..b907acc 100644
--- a/.github/workflows/build_dist.yml
+++ b/.github/workflows/build_dist.yml
@@ -120,6 +120,8 @@ jobs:
         if: ${{ endsWith(matrix.cibw_build, 't-*') }}
         shell: bash -l {0}
         run: |
+          # Variables are set in order to be passed down to both cibuildwheel and the
+          # Docker image spawned by that action
           echo "CIBW_BEFORE_TEST=pip install pytest pytest-run-parallel" >> "$GITHUB_ENV"
           echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False PYTEST_ADDOPTS=--parallel-threads=1" >> "$GITHUB_ENV"
           echo "CIBW_TEST_COMMAND=tox -x testenv.deps+=pytest-run-parallel -x testenv.pass_env+=PYTEST_ADDOPTS -c {project}" >> "$GITHUB_ENV"
diff --git a/tests/block/test_block_0.py b/tests/block/test_block_0.py
index 561b185..a7731c3 100644
--- a/tests/block/test_block_0.py
+++ b/tests/block/test_block_0.py
@@ -93,12 +93,13 @@ def test_2(data, mode, store_size, dictionary):
     (c_kwargs, d_kwargs) = setup_kwargs(mode, store_size)
 
     def copy_buf(data):
-        data_x = data
         if isinstance(data, memoryview):
             data_x = memoryview(copy.deepcopy(data.obj))
         elif isinstance(data, bytearray):
             data_x = bytearray()
             data_x[:] = data
+        else:
+            data_x = data
         return data_x
 
     data_in = [copy_buf(data) for i in range(32)]

From 708e6d49edf09079936c444c0516236dbe406426 Mon Sep 17 00:00:00 2001
From: Karolina Surma <ksurma@redhat.com>
Date: Thu, 29 May 2025 12:06:30 +0200
Subject: [PATCH 20/36] Correct the import of _compression for Python 3.14

This is backwards compatible with all supported versions of Python.
---
 lz4/frame/__init__.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lz4/frame/__init__.py b/lz4/frame/__init__.py
index 00f3e64..60bf7dc 100644
--- a/lz4/frame/__init__.py
+++ b/lz4/frame/__init__.py
@@ -25,9 +25,9 @@
 __doc__ = _doc
 
 try:
-    import _compression   # Python 3.6 and later
+    import compression._common._streams as _compression  # Python 3.14
 except ImportError:
-    from . import _compression
+    import _compression   # Python 3.6 - 3.13
 
 
 BLOCKSIZE_DEFAULT = _BLOCKSIZE_DEFAULT

From d8387509dd17dcefec6041bf242598ada30a505f Mon Sep 17 00:00:00 2001
From: Karolina Surma <33810531+befeleme@users.noreply.github.com>
Date: Tue, 7 Oct 2025 09:19:38 +0200
Subject: [PATCH 21/36] Update lz4/frame/__init__.py

Co-authored-by: Christian Clauss <cclauss@me.com>
---
 lz4/frame/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lz4/frame/__init__.py b/lz4/frame/__init__.py
index 60bf7dc..91ad50b 100644
--- a/lz4/frame/__init__.py
+++ b/lz4/frame/__init__.py
@@ -27,7 +27,7 @@
 try:
     import compression._common._streams as _compression  # Python 3.14
 except ImportError:
-    import _compression   # Python 3.6 - 3.13
+    import _compression   # Python 3.9 - 3.13
 
 
 BLOCKSIZE_DEFAULT = _BLOCKSIZE_DEFAULT

From 5c9f5561e4353978746b2af6fac1338668e5473b Mon Sep 17 00:00:00 2001
From: Christian Clauss <cclauss@me.com>
Date: Wed, 24 Sep 2025 13:13:08 +0200
Subject: [PATCH 22/36] Keep GitHub Actions up to date with GitHub's Dependabot

* [Keeping your software supply chain secure with Dependabot](https://docs.github.com/en/code-security/dependabot)
* [Keeping your actions up to date with Dependabot](https://docs.github.com/en/code-security/dependabot/working-with-dependabot/keeping-your-actions-up-to-date-with-dependabot)
* [Configuration options for the `dependabot.yml` file - package-ecosystem](https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#package-ecosystem)
---
 .github/dependabot.yml | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 .github/dependabot.yml

diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..be006de
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,13 @@
+# Keep GitHub Actions up to date with GitHub's Dependabot...
+# https://docs.github.com/en/code-security/dependabot/working-with-dependabot/keeping-your-actions-up-to-date-with-dependabot
+# https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#package-ecosystem
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    groups:
+      github-actions:
+        patterns:
+          - "*"  # Group all Actions updates into a single larger pull request
+    schedule:
+      interval: weekly

From 8c82a0df102fed1221bb5edf8dfa3f72017160a6 Mon Sep 17 00:00:00 2001
From: Christian Clauss <cclauss@me.com>
Date: Wed, 24 Sep 2025 12:46:16 +0200
Subject: [PATCH 23/36] Build wheels for Python 3.14

Caution: The new `compression` module in Python >= 3.14 Standard Library causes compatibility problems.
* https://docs.python.org/3.14/library/compression.html
* #302
* #303
* #308

---
Python v3.14 -- October 7th
* https://www.python.org/download/pre-releases
* https://www.python.org/downloads/release/python-3140rc3
* https://docs.python.org/3.14/whatsnew/3.14.html

What's new in Python 3.14: ___PEP 784: Adding Zstandard to the standard library___
* https://docs.python.org/3.14/whatsnew/3.14.html#whatsnew314-pep784
---
 .github/workflows/build_dist.yml | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/.github/workflows/build_dist.yml b/.github/workflows/build_dist.yml
index b907acc..836e216 100644
--- a/.github/workflows/build_dist.yml
+++ b/.github/workflows/build_dist.yml
@@ -19,11 +19,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
-          fetch-depth: 0 # To ensure tags are retrieved to enabe setuptools_scm to work
+          fetch-depth: 0 # To ensure tags are retrieved to enable setuptools_scm to work
       - name: Install Python 3.x
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: 3.x
       - name: Build sdist
@@ -45,17 +45,17 @@ jobs:
       matrix:
         os:
           - ubuntu-latest
-          - macos-13 # x86
+          - macos-15-intel # x86
           - macos-latest # arm
           - windows-latest
-        cibw_build: [cp39-*, cp310-*, cp311-*, cp312-*, cp313-*, cp313t-*]
+        cibw_build: [cp39-*, cp310-*, cp311-*, cp312-*, cp313-*, cp313t-*, cp314-*, cp314t-*]
     steps:
       - name: Check out repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
-          fetch-depth: 0 # To ensure tags are retrieved to enabe setuptools_scm to work
+          fetch-depth: 0 # To ensure tags are retrieved to enable setuptools_scm to work
       - name: Install Python 3.x
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: 3.x
       - name: Set up QEMU # Needed to build aarch64 wheels
@@ -78,7 +78,7 @@ jobs:
           echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False" >> "$GITHUB_ENV"
           echo "CIBW_TEST_COMMAND=tox -c {project}" >> "$GITHUB_ENV"
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.23.2
+        uses: pypa/cibuildwheel@v3.2.0
         env:
           # CIBW_ARCHS_LINUX: "x86_64 i686 aarch64"
           CIBW_ARCHS_LINUX: "x86_64 i686"
@@ -106,14 +106,14 @@ jobs:
       matrix:
         os:
           - ubuntu-24.04-arm
-        cibw_build: [cp39-*, cp310-*, cp311-*, cp312-*, cp313-*, cp313t-*]
+        cibw_build: [cp39-*, cp310-*, cp311-*, cp312-*, cp313-*, cp313t-*, cp314-*, cp314t-*]
     steps:
       - name: Check out repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
-          fetch-depth: 0 # To ensure tags are retrieved to enabe setuptools_scm to work
+          fetch-depth: 0 # To ensure tags are retrieved to enable setuptools_scm to work
       - name: Install Python 3.x
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: 3.x
       - name: Setup free-threading variables
@@ -132,7 +132,7 @@ jobs:
           echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False" >> "$GITHUB_ENV"
           echo "CIBW_TEST_COMMAND=tox -c {project}" >> "$GITHUB_ENV"
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.23.2
+        uses: pypa/cibuildwheel@v3.2.0
         env:
           CIBW_ARCHS_LINUX: "aarch64"
           CIBW_BUILD: ${{ matrix.cibw_build }}
@@ -151,7 +151,7 @@ jobs:
     runs-on: ubuntu-latest
     if: startsWith(github.ref, 'refs/tags/')
     steps:
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v5
         with:
           pattern: cibw-*
           path: dist

From 438df39de27dc1d44fdc45c6fd3256611758d099 Mon Sep 17 00:00:00 2001
From: Christian Clauss <cclauss@me.com>
Date: Mon, 20 Oct 2025 17:21:16 +0200
Subject: [PATCH 24/36] Remove cp314t from cibw_build matrix

---
 .github/workflows/build_dist.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/build_dist.yml b/.github/workflows/build_dist.yml
index 836e216..1556839 100644
--- a/.github/workflows/build_dist.yml
+++ b/.github/workflows/build_dist.yml
@@ -48,7 +48,7 @@ jobs:
           - macos-15-intel # x86
           - macos-latest # arm
           - windows-latest
-        cibw_build: [cp39-*, cp310-*, cp311-*, cp312-*, cp313-*, cp313t-*, cp314-*, cp314t-*]
+        cibw_build: [cp39-*, cp310-*, cp311-*, cp312-*, cp313-*, cp313t-*, cp314-*]
     steps:
       - name: Check out repository
         uses: actions/checkout@v5
@@ -106,7 +106,7 @@ jobs:
       matrix:
         os:
           - ubuntu-24.04-arm
-        cibw_build: [cp39-*, cp310-*, cp311-*, cp312-*, cp313-*, cp313t-*, cp314-*, cp314t-*]
+        cibw_build: [cp39-*, cp310-*, cp311-*, cp312-*, cp313-*, cp313t-*, cp314-*]
     steps:
       - name: Check out repository
         uses: actions/checkout@v5

From 849e1545f36ec5036052dad80e402c2e4d0b2ed2 Mon Sep 17 00:00:00 2001
From: Christian Clauss <cclauss@me.com>
Date: Wed, 24 Sep 2025 14:32:23 +0200
Subject: [PATCH 25/36] Fix typos discovered by codespell

---
 lz4/frame/__init__.py         |  6 +++---
 lz4/frame/_frame.c            |  4 ++--
 lz4/stream/__init__.py        | 10 +++++-----
 lz4/stream/_stream.c          |  2 +-
 tests/frame/test_frame_9.py   |  2 +-
 tests/stream/test_stream_0.py |  2 +-
 tests/stream/test_stream_1.py | 10 +++++-----
 7 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/lz4/frame/__init__.py b/lz4/frame/__init__.py
index 91ad50b..2a82cd0 100644
--- a/lz4/frame/__init__.py
+++ b/lz4/frame/__init__.py
@@ -268,7 +268,7 @@ def flush(self):
         This returns a ``bytes`` or ``bytearray`` object containing any data
         stored in the compressor's internal buffers and a frame footer.
 
-        The LZ4FrameCompressor instance may be re-used after this method has
+        The LZ4FrameCompressor instance may be reused after this method has
         been called to create a new frame of compressed data.
 
         Returns:
@@ -287,7 +287,7 @@ def flush(self):
     def reset(self):
         """Reset the `LZ4FrameCompressor` instance.
 
-        This allows the `LZ4FrameCompression` instance to be re-used after an
+        This allows the `LZ4FrameCompression` instance to be reused after an
         error.
 
         """
@@ -360,7 +360,7 @@ def __exit__(self, exception_type, exception, traceback):
     def reset(self):
         """Reset the decompressor state.
 
-        This is useful after an error occurs, allowing re-use of the instance.
+        This is useful after an error occurs, allowing reuse of the instance.
 
         """
         reset_decompression_context(self._context)
diff --git a/lz4/frame/_frame.c b/lz4/frame/_frame.c
index e62c72c..440b0b5 100644
--- a/lz4/frame/_frame.c
+++ b/lz4/frame/_frame.c
@@ -1330,7 +1330,7 @@ PyDoc_STRVAR(
  );
 
 #define COMPRESS_KWARGS_DOCSTRING                                       \
-  "    block_size (int): Sepcifies the maximum blocksize to use.\n"     \
+  "    block_size (int): Specifies the maximum blocksize to use.\n"     \
   "        Options:\n\n"                                                \
   "        - `lz4.frame.BLOCKSIZE_DEFAULT`: the lz4 library default\n" \
   "        - `lz4.frame.BLOCKSIZE_MAX64KB`: 64 kB\n"             \
@@ -1466,7 +1466,7 @@ PyDoc_STRVAR
  "data will also be included in the returned data.\n"                   \
  "\n"                                                                   \
  "If the ``end_frame`` argument is ``True``, the compression context will be\n" \
- "reset and can be re-used.\n"                                          \
+ "reset and can be reused.\n"                                          \
  "\n"                                                                   \
  "Args:\n"                                                              \
  "    context (cCtx): Compression context\n"                            \
diff --git a/lz4/stream/__init__.py b/lz4/stream/__init__.py
index 4b00746..58ce298 100644
--- a/lz4/stream/__init__.py
+++ b/lz4/stream/__init__.py
@@ -32,7 +32,7 @@ def __init__(self, strategy, buffer_size, return_bytearray=False, store_comp_siz
                     perform decompression using this initial dictionary.
 
             Raises:
-                Exceptions occuring during the context initialization.
+                Exceptions occurring during the context initialization.
 
                 OverflowError: raised if the ``dictionary`` parameter is too large
                     for the LZ4 context.
@@ -73,7 +73,7 @@ def decompress(self, chunk):
                 bytes or bytearray: Decompressed data.
 
             Raises:
-                Exceptions occuring during decompression.
+                Exceptions occurring during decompression.
 
                 ValueError: raised if the source is inconsistent with a finite LZ4
                     stream block chain.
@@ -96,7 +96,7 @@ def get_block(self, stream):
                 bytes or bytearray: LZ4 compressed data block.
 
             Raises:
-                Exceptions occuring while getting the first block from ``stream``.
+                Exceptions occurring while getting the first block from ``stream``.
 
                 BufferError: raised if the function cannot return a complete LZ4
                     compressed block from the stream (i.e. the stream does not hold
@@ -150,7 +150,7 @@ def __init__(self, strategy, buffer_size, mode="default", acceleration=True, com
                     perform compression using this initial dictionary.
 
             Raises:
-                Exceptions occuring during the context initialization.
+                Exceptions occurring during the context initialization.
 
                 OverflowError: raised if the ``dictionary`` parameter is too large
                     for the LZ4 context.
@@ -194,7 +194,7 @@ def compress(self, chunk):
                 bytes or bytearray: Compressed data.
 
             Raises:
-                Exceptions occuring during compression.
+                Exceptions occurring during compression.
 
                 OverflowError: raised if the source is too large for being compressed in
                     the given context.
diff --git a/lz4/stream/_stream.c b/lz4/stream/_stream.c
index f0dfad5..4c51d89 100644
--- a/lz4/stream/_stream.c
+++ b/lz4/stream/_stream.c
@@ -931,7 +931,7 @@ _create_context (PyObject * Py_UNUSED (self), PyObject * args, PyObject * kwds)
       context->output.len = buffer_size;
       total_size = context->output.len;
 
-      /* Here we cannot assert the maximal theorical decompressed chunk length
+      /* Here we cannot assert the maximal theoretical decompressed chunk length
        * will fit in one page of the double_buffer, i.e.:
        *    assert( !(double_buffer.page_size < _LZ4_inputBound(store_max_size)) )
        *
diff --git a/tests/frame/test_frame_9.py b/tests/frame/test_frame_9.py
index c5335ae..6f7fc0d 100644
--- a/tests/frame/test_frame_9.py
+++ b/tests/frame/test_frame_9.py
@@ -65,7 +65,7 @@ def test_issue_227_1():
 
 @pytest.mark.skipif(
     sys.version_info < (3, 8),
-    reason="PickleBuffer only availiable in Python 3.8 or greater"
+    reason="PickleBuffer only available in Python 3.8 or greater"
 )
 def test_issue_227_2():
     q = array.array('Q', [1, 2, 3, 4, 5])
diff --git a/tests/stream/test_stream_0.py b/tests/stream/test_stream_0.py
index cac07bd..3cd05d6 100644
--- a/tests/stream/test_stream_0.py
+++ b/tests/stream/test_stream_0.py
@@ -112,6 +112,6 @@ def test_1(data, strategy, mode, buffer_size, store_comp_size,
 
 # Test multi threaded:
 #   Not relevant in the lz4.stream case (the process is highly sequential,
-#   and re-use/share the same context from one input chunk to the next one).
+#   and reuse/share the same context from one input chunk to the next one).
 def test_2(data, strategy, mode, buffer_size, store_comp_size, dictionary): # noqa
     pass
diff --git a/tests/stream/test_stream_1.py b/tests/stream/test_stream_1.py
index 6b49267..481de8a 100644
--- a/tests/stream/test_stream_1.py
+++ b/tests/stream/test_stream_1.py
@@ -136,7 +136,7 @@ def test_invalid_config_c_4(store_comp_size):
     c_kwargs.update(store_comp_size)
 
     if store_comp_size['store_comp_size'] >= 4:
-        # No need for skiping this test case, since arguments check is
+        # No need for skipping this test case, since arguments check is
         # expecting to raise an error.
 
         # Make sure the page size is larger than what the input bound will be,
@@ -169,7 +169,7 @@ def test_invalid_config_d_4(store_comp_size):
         # but still fit in 4 bytes
         d_kwargs['buffer_size'] -= 1
 
-    # No failure expected during instanciation/initialization
+    # No failure expected during instantiation/initialization
     lz4.stream.LZ4StreamDecompressor(**d_kwargs)
 
 
@@ -199,7 +199,7 @@ def test_invalid_config_d_5():
     d_kwargs = {}
     d_kwargs['strategy'] = "double_buffer"
 
-    # No failure expected during instanciation/initialization
+    # No failure expected during instantiation/initialization
     d_kwargs['buffer_size'] = lz4.stream.LZ4_MAX_INPUT_SIZE
 
     if sys.maxsize < 0xffffffff:
@@ -207,7 +207,7 @@ def test_invalid_config_d_5():
 
     lz4.stream.LZ4StreamDecompressor(**d_kwargs)
 
-    # No failure expected during instanciation/initialization
+    # No failure expected during instantiation/initialization
     d_kwargs['buffer_size'] = lz4.stream.LZ4_MAX_INPUT_SIZE + 1
 
     if sys.maxsize < 0xffffffff:
@@ -215,7 +215,7 @@ def test_invalid_config_d_5():
 
     lz4.stream.LZ4StreamDecompressor(**d_kwargs)
 
-    # No failure expected during instanciation/initialization
+    # No failure expected during instantiation/initialization
     d_kwargs['buffer_size'] = _4GB - 1  # 4GB - 1 (to fit in 4 bytes)
 
     if sys.maxsize < 0xffffffff:

From 59b2d8176072bdee50d38cc68ec65c33b928a980 Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Mon, 20 Oct 2025 17:15:14 +0000
Subject: [PATCH 26/36] Bump pypa/cibuildwheel in the github-actions group
 across 1 directory

Bumps the github-actions group with 1 update in the / directory: [pypa/cibuildwheel](https://github.com/pypa/cibuildwheel).


Updates `pypa/cibuildwheel` from 3.2.0 to 3.2.1
- [Release notes](https://github.com/pypa/cibuildwheel/releases)
- [Changelog](https://github.com/pypa/cibuildwheel/blob/main/docs/changelog.md)
- [Commits](https://github.com/pypa/cibuildwheel/compare/v3.2.0...v3.2.1)

---
updated-dependencies:
- dependency-name: pypa/cibuildwheel
  dependency-version: 3.2.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <support@github.com>
---
 .github/workflows/build_dist.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/build_dist.yml b/.github/workflows/build_dist.yml
index 1556839..1af3020 100644
--- a/.github/workflows/build_dist.yml
+++ b/.github/workflows/build_dist.yml
@@ -78,7 +78,7 @@ jobs:
           echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False" >> "$GITHUB_ENV"
           echo "CIBW_TEST_COMMAND=tox -c {project}" >> "$GITHUB_ENV"
       - name: Build wheels
-        uses: pypa/cibuildwheel@v3.2.0
+        uses: pypa/cibuildwheel@v3.2.1
         env:
           # CIBW_ARCHS_LINUX: "x86_64 i686 aarch64"
           CIBW_ARCHS_LINUX: "x86_64 i686"
@@ -132,7 +132,7 @@ jobs:
           echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False" >> "$GITHUB_ENV"
           echo "CIBW_TEST_COMMAND=tox -c {project}" >> "$GITHUB_ENV"
       - name: Build wheels
-        uses: pypa/cibuildwheel@v3.2.0
+        uses: pypa/cibuildwheel@v3.2.1
         env:
           CIBW_ARCHS_LINUX: "aarch64"
           CIBW_BUILD: ${{ matrix.cibw_build }}

From d5daffd8356e71cb075fef5071bbbe75b274d109 Mon Sep 17 00:00:00 2001
From: Christian Clauss <cclauss@me.com>
Date: Thu, 23 Oct 2025 14:26:19 +0200
Subject: [PATCH 27/36] setup.py: Add support for Python 3.14 and Free
 Threading

https://pypi.org/classifiers
---
 setup.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/setup.py b/setup.py
index 9bc91f0..d9d8191 100644
--- a/setup.py
+++ b/setup.py
@@ -205,5 +205,7 @@ def pkgconfig_installed_check(lib, required_version, default):
         'Programming Language :: Python :: 3.11',
         'Programming Language :: Python :: 3.12',
         'Programming Language :: Python :: 3.13',
+        'Programming Language :: Python :: 3.14',
+        'Programming Language :: Python :: Free Threading',
     ],
 )

From 00e0ae93e7e7f81fcc9e9d9768a9b95c01360adb Mon Sep 17 00:00:00 2001
From: Hannes Braun <hannes@hannesbraun.net>
Date: Tue, 3 Feb 2026 15:06:43 +0100
Subject: [PATCH 28/36] Switch to SPDX license expression

License classifiers are deprecated.
---
 setup.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/setup.py b/setup.py
index d9d8191..350b551 100644
--- a/setup.py
+++ b/setup.py
@@ -180,6 +180,7 @@ def pkgconfig_installed_check(lib, required_version, default):
     long_description=open('README.rst', 'r').read(),
     author='Jonathan Underwood',
     author_email='jonathan.underwood@gmail.com',
+    license='BSD-3-Clause',
     url='https://github.com/python-lz4/python-lz4',
     packages=packages,
     ext_modules=ext_modules,
@@ -196,7 +197,6 @@ def pkgconfig_installed_check(lib, required_version, default):
     },
     classifiers=[
         'Development Status :: 5 - Production/Stable',
-        'License :: OSI Approved :: BSD License',
         'Intended Audience :: Developers',
         'Programming Language :: C',
         'Programming Language :: Python',

From e000ef843a760998462f9a7b10b52d6bddbb8532 Mon Sep 17 00:00:00 2001
From: Nathan Goldbaum <nathan.goldbaum@gmail.com>
Date: Mon, 3 Nov 2025 08:31:48 -0700
Subject: [PATCH 29/36] Enable cp314t wheel builds

---
 .github/workflows/build_dist.yml | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

diff --git a/.github/workflows/build_dist.yml b/.github/workflows/build_dist.yml
index 1af3020..e2fd4fc 100644
--- a/.github/workflows/build_dist.yml
+++ b/.github/workflows/build_dist.yml
@@ -48,7 +48,7 @@ jobs:
           - macos-15-intel # x86
           - macos-latest # arm
           - windows-latest
-        cibw_build: [cp39-*, cp310-*, cp311-*, cp312-*, cp313-*, cp313t-*, cp314-*]
+        cibw_build: [cp39-*, cp310-*, cp311-*, cp312-*, cp313-*, cp313t-*, cp314-*, cp314t-*]
     steps:
       - name: Check out repository
         uses: actions/checkout@v5
@@ -106,7 +106,7 @@ jobs:
       matrix:
         os:
           - ubuntu-24.04-arm
-        cibw_build: [cp39-*, cp310-*, cp311-*, cp312-*, cp313-*, cp313t-*, cp314-*]
+        cibw_build: [cp39-*, cp310-*, cp311-*, cp312-*, cp313-*, cp313t-*, cp314-*, cp314t-*]
     steps:
       - name: Check out repository
         uses: actions/checkout@v5
@@ -116,17 +116,7 @@ jobs:
         uses: actions/setup-python@v6
         with:
           python-version: 3.x
-      - name: Setup free-threading variables
-        if: ${{ endsWith(matrix.cibw_build, 't-*') }}
-        shell: bash -l {0}
-        run: |
-          # Variables are set in order to be passed down to both cibuildwheel and the
-          # Docker image spawned by that action
-          echo "CIBW_BEFORE_TEST=pip install pytest pytest-run-parallel" >> "$GITHUB_ENV"
-          echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False PYTEST_ADDOPTS=--parallel-threads=1" >> "$GITHUB_ENV"
-          echo "CIBW_TEST_COMMAND=tox -x testenv.deps+=pytest-run-parallel -x testenv.pass_env+=PYTEST_ADDOPTS -c {project}" >> "$GITHUB_ENV"
       - name: Setup environment
-        if: ${{ !endsWith(matrix.cibw_build, 't-*') }}
         shell: bash -l {0}
         run: |
           echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False" >> "$GITHUB_ENV"

From 8427b5691dea5909768c805bc4fc3b1935549fa1 Mon Sep 17 00:00:00 2001
From: Nathan Goldbaum <nathan.goldbaum@gmail.com>
Date: Mon, 3 Nov 2025 09:20:20 -0700
Subject: [PATCH 30/36] mark tests that use tracemalloc as thread-unsafe

---
 tests/block/test_block_2.py   | 4 ++++
 tests/block/test_block_3.py   | 4 +++-
 tests/frame/test_frame_5.py   | 9 +++++++++
 tests/stream/test_stream_3.py | 4 +++-
 4 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/tests/block/test_block_2.py b/tests/block/test_block_2.py
index a2aea4d..a75e92f 100644
--- a/tests/block/test_block_2.py
+++ b/tests/block/test_block_2.py
@@ -19,6 +19,10 @@
 # fragile.
 
 
+@pytest.mark.thread_unsafe(
+    reason=("Large multithreaded allocations will likely exhaust "
+            "system memory.")
+)
 @pytest.mark.skipif(
     os.environ.get('TRAVIS') is not None,
     reason='Skipping test on Travis due to insufficient memory'
diff --git a/tests/block/test_block_3.py b/tests/block/test_block_3.py
index 88461b7..07f8db2 100644
--- a/tests/block/test_block_3.py
+++ b/tests/block/test_block_3.py
@@ -18,7 +18,9 @@ def data(request):
     return request.param
 
 
-@pytest.mark.thread_unsafe
+@pytest.mark.thread_unsafe(
+    reason="tracemalloc captures global snapshots"
+)
 def test_block_decompress_mem_usage(data):
     tracemalloc = pytest.importorskip('tracemalloc')
 
diff --git a/tests/frame/test_frame_5.py b/tests/frame/test_frame_5.py
index dcbe4ae..85e6fa0 100644
--- a/tests/frame/test_frame_5.py
+++ b/tests/frame/test_frame_5.py
@@ -21,6 +21,9 @@ def data(request):
     return request.param
 
 
+@pytest.mark.thread_unsafe(
+    reason="tracemalloc captures global snapshots"
+)
 def test_frame_decompress_mem_usage(data):
     tracemalloc = pytest.importorskip('tracemalloc')
 
@@ -43,6 +46,9 @@ def test_frame_decompress_mem_usage(data):
             prev_snapshot = snapshot
 
 
+@pytest.mark.thread_unsafe(
+    reason="tracemalloc captures global snapshots"
+)
 def test_frame_decompress_chunk_mem_usage(data):
     tracemalloc = pytest.importorskip('tracemalloc')
     tracemalloc.start()
@@ -68,6 +74,9 @@ def test_frame_decompress_chunk_mem_usage(data):
             prev_snapshot = snapshot
 
 
+@pytest.mark.thread_unsafe(
+    reason="tracemalloc captures global snapshots"
+)
 def test_frame_open_decompress_mem_usage(data):
     tracemalloc = pytest.importorskip('tracemalloc')
     tracemalloc.start()
diff --git a/tests/stream/test_stream_3.py b/tests/stream/test_stream_3.py
index fed93d2..58094e1 100644
--- a/tests/stream/test_stream_3.py
+++ b/tests/stream/test_stream_3.py
@@ -71,7 +71,9 @@ def data(request):
     return request.param
 
 
-@pytest.mark.thread_unsafe
+@pytest.mark.thread_unsafe(
+    reason="tracemalloc captures global snapshots"
+)
 def test_block_decompress_mem_usage(data, buffer_size):
     kwargs = {
         'strategy': "double_buffer",

From 30a7a7eac52b222f2842710727eba40222cef22e Mon Sep 17 00:00:00 2001
From: Nathan Goldbaum <nathan.goldbaum@gmail.com>
Date: Mon, 3 Nov 2025 09:38:16 -0700
Subject: [PATCH 31/36] delete unnecessary module-scope mark

---
 tests/frame/test_frame_5.py | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/tests/frame/test_frame_5.py b/tests/frame/test_frame_5.py
index 85e6fa0..497c8a1 100644
--- a/tests/frame/test_frame_5.py
+++ b/tests/frame/test_frame_5.py
@@ -8,9 +8,6 @@
     (b'a' * 1024 * 1024),
 ]
 
-pytestmark = pytest.mark.thread_unsafe
-
-
 @pytest.fixture(
     params=test_data,
     ids=[

From c5c5130b2ed1cf276b9f01d7a4e6fe8c6cff9a36 Mon Sep 17 00:00:00 2001
From: Nathan Goldbaum <nathan.goldbaum@gmail.com>
Date: Mon, 3 Nov 2025 10:30:37 -0700
Subject: [PATCH 32/36] add missing thread-unsafe reasons

---
 tests/block/test_block_0.py   | 5 ++++-
 tests/frame/test_frame_5.py   | 1 +
 tests/stream/test_stream_0.py | 5 ++++-
 3 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/tests/block/test_block_0.py b/tests/block/test_block_0.py
index a7731c3..f39da18 100644
--- a/tests/block/test_block_0.py
+++ b/tests/block/test_block_0.py
@@ -88,7 +88,10 @@ def test_1(data, mode, store_size, c_return_bytearray, d_return_bytearray, dicti
 
 
 # Test multi threaded usage with all valid variations of input
-@pytest.mark.thread_unsafe
+@pytest.mark.thread_unsafe(
+    reason=("Test is already explicitly multithreaded, should "
+            "not be run in a thread pool.")
+)
 def test_2(data, mode, store_size, dictionary):
     (c_kwargs, d_kwargs) = setup_kwargs(mode, store_size)
 
diff --git a/tests/frame/test_frame_5.py b/tests/frame/test_frame_5.py
index 497c8a1..9e4b83a 100644
--- a/tests/frame/test_frame_5.py
+++ b/tests/frame/test_frame_5.py
@@ -8,6 +8,7 @@
     (b'a' * 1024 * 1024),
 ]
 
+
 @pytest.fixture(
     params=test_data,
     ids=[
diff --git a/tests/stream/test_stream_0.py b/tests/stream/test_stream_0.py
index 3cd05d6..c7db76e 100644
--- a/tests/stream/test_stream_0.py
+++ b/tests/stream/test_stream_0.py
@@ -96,7 +96,10 @@ def setup_kwargs(strategy, mode, buffer_size, store_comp_size,
 
 
 # Test single threaded usage with all valid variations of input
-@pytest.mark.thread_unsafe
+@pytest.mark.thread_unsafe(
+    reason=("test modifies fixtures that would be shared, see "
+            "https://github.com/Quansight-Labs/pytest-run-parallel/issues/14")
+)
 def test_1(data, strategy, mode, buffer_size, store_comp_size,
            c_return_bytearray, d_return_bytearray, dictionary):
     if buffer_size >= (1 << (8 * store_comp_size['store_comp_size'])):

From ebb04a3525e7d146471bd2c394ba4aa63053db41 Mon Sep 17 00:00:00 2001
From: Nathan Goldbaum <nathan.goldbaum@gmail.com>
Date: Mon, 3 Nov 2025 10:30:55 -0700
Subject: [PATCH 33/36] suppress warnings when pytest-run-parallel isn't
 available

---
 tests/conftest.py | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 tests/conftest.py

diff --git a/tests/conftest.py b/tests/conftest.py
new file mode 100644
index 0000000..0fefd8e
--- /dev/null
+++ b/tests/conftest.py
@@ -0,0 +1,13 @@
+try:
+    import pytest_run_parallel  # noqa: F401
+    PARALLEL_RUN_AVALIABLE = True
+except ModuleNotFoundError:
+    PARALLEL_RUN_AVALIABLE = False
+
+
+def pytest_configure(config):
+    if not PARALLEL_RUN_AVALIABLE:
+        config.addinivalue_line(
+            "markers",
+            "thread_unsafe: mark the test function as single-threaded",
+        )

From 43b672d78f728cc2ea33cd5f0a5949cfcf88572f Mon Sep 17 00:00:00 2001
From: Nathan Goldbaum <nathan.goldbaum@gmail.com>
Date: Mon, 3 Nov 2025 13:09:23 -0700
Subject: [PATCH 34/36] disable coverage for tests that measure memory usage

---
 tests/block/test_block_3.py   | 2 ++
 tests/frame/test_frame_5.py   | 6 ++++++
 tests/stream/test_stream_3.py | 2 ++
 3 files changed, 10 insertions(+)

diff --git a/tests/block/test_block_3.py b/tests/block/test_block_3.py
index 07f8db2..86bd993 100644
--- a/tests/block/test_block_3.py
+++ b/tests/block/test_block_3.py
@@ -18,6 +18,8 @@ def data(request):
     return request.param
 
 
+# coverage might allocate and cause this test to fail
+@pytest.mark.no_cover
 @pytest.mark.thread_unsafe(
     reason="tracemalloc captures global snapshots"
 )
diff --git a/tests/frame/test_frame_5.py b/tests/frame/test_frame_5.py
index 9e4b83a..29e7765 100644
--- a/tests/frame/test_frame_5.py
+++ b/tests/frame/test_frame_5.py
@@ -19,6 +19,8 @@ def data(request):
     return request.param
 
 
+# coverage might allocate and cause this test to fail
+@pytest.mark.no_cover
 @pytest.mark.thread_unsafe(
     reason="tracemalloc captures global snapshots"
 )
@@ -44,6 +46,8 @@ def test_frame_decompress_mem_usage(data):
             prev_snapshot = snapshot
 
 
+# coverage might allocate and cause this test to fail
+@pytest.mark.no_cover
 @pytest.mark.thread_unsafe(
     reason="tracemalloc captures global snapshots"
 )
@@ -72,6 +76,8 @@ def test_frame_decompress_chunk_mem_usage(data):
             prev_snapshot = snapshot
 
 
+# coverage might allocate and cause this test to fail
+@pytest.mark.no_cover
 @pytest.mark.thread_unsafe(
     reason="tracemalloc captures global snapshots"
 )
diff --git a/tests/stream/test_stream_3.py b/tests/stream/test_stream_3.py
index 58094e1..a18ed56 100644
--- a/tests/stream/test_stream_3.py
+++ b/tests/stream/test_stream_3.py
@@ -71,6 +71,8 @@ def data(request):
     return request.param
 
 
+# coverage might allocate and cause this test to fail
+@pytest.mark.no_cover
 @pytest.mark.thread_unsafe(
     reason="tracemalloc captures global snapshots"
 )

From 33612bddc2fa9df7471e01e07bf597159aba2e07 Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Mon, 24 Nov 2025 17:37:01 +0000
Subject: [PATCH 35/36] Bump the github-actions group across 1 directory with 4
 updates

Bumps the github-actions group with 4 updates in the / directory: [actions/checkout](https://github.com/actions/checkout), [actions/upload-artifact](https://github.com/actions/upload-artifact), [pypa/cibuildwheel](https://github.com/pypa/cibuildwheel) and [actions/download-artifact](https://github.com/actions/download-artifact).


Updates `actions/checkout` from 5 to 6
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v5...v6)

Updates `actions/upload-artifact` from 4 to 5
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v4...v5)

Updates `pypa/cibuildwheel` from 3.2.1 to 3.3.0
- [Release notes](https://github.com/pypa/cibuildwheel/releases)
- [Changelog](https://github.com/pypa/cibuildwheel/blob/main/docs/changelog.md)
- [Commits](https://github.com/pypa/cibuildwheel/compare/v3.2.1...v3.3.0)

Updates `actions/download-artifact` from 5 to 6
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](https://github.com/actions/download-artifact/compare/v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
- dependency-name: actions/upload-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
- dependency-name: pypa/cibuildwheel
  dependency-version: 3.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-actions
- dependency-name: actions/download-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <support@github.com>
---
 .github/workflows/build_dist.yml | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/.github/workflows/build_dist.yml b/.github/workflows/build_dist.yml
index e2fd4fc..d33b352 100644
--- a/.github/workflows/build_dist.yml
+++ b/.github/workflows/build_dist.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0 # To ensure tags are retrieved to enable setuptools_scm to work
       - name: Install Python 3.x
@@ -29,7 +29,7 @@ jobs:
       - name: Build sdist
         run: pipx run build --sdist
       - name: Save sdist
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: cibw-sdist.tar.gz
           path: dist/*.tar.gz
@@ -51,7 +51,7 @@ jobs:
         cibw_build: [cp39-*, cp310-*, cp311-*, cp312-*, cp313-*, cp313t-*, cp314-*, cp314t-*]
     steps:
       - name: Check out repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0 # To ensure tags are retrieved to enable setuptools_scm to work
       - name: Install Python 3.x
@@ -78,7 +78,7 @@ jobs:
           echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False" >> "$GITHUB_ENV"
           echo "CIBW_TEST_COMMAND=tox -c {project}" >> "$GITHUB_ENV"
       - name: Build wheels
-        uses: pypa/cibuildwheel@v3.2.1
+        uses: pypa/cibuildwheel@v3.3.0
         env:
           # CIBW_ARCHS_LINUX: "x86_64 i686 aarch64"
           CIBW_ARCHS_LINUX: "x86_64 i686"
@@ -90,7 +90,7 @@ jobs:
           CIBW_TEST_SKIP: "*-macosx_arm64 *-macosx_universal2:arm64 *-*linux_{ppc64le,s390x} *-win_arm64"
           CIBW_BEFORE_BUILD: "python -m pip install -U pip && python -m pip install tox"
       - name: Save wheels
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: cibw-wheels-${{ matrix.os }}-${{ strategy.job-index }}
           path: ./wheelhouse/*.whl
@@ -109,7 +109,7 @@ jobs:
         cibw_build: [cp39-*, cp310-*, cp311-*, cp312-*, cp313-*, cp313t-*, cp314-*, cp314t-*]
     steps:
       - name: Check out repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0 # To ensure tags are retrieved to enable setuptools_scm to work
       - name: Install Python 3.x
@@ -122,7 +122,7 @@ jobs:
           echo "CIBW_ENVIRONMENT=PYLZ4_USE_SYSTEM_LZ4=False" >> "$GITHUB_ENV"
           echo "CIBW_TEST_COMMAND=tox -c {project}" >> "$GITHUB_ENV"
       - name: Build wheels
-        uses: pypa/cibuildwheel@v3.2.1
+        uses: pypa/cibuildwheel@v3.3.0
         env:
           CIBW_ARCHS_LINUX: "aarch64"
           CIBW_BUILD: ${{ matrix.cibw_build }}
@@ -130,7 +130,7 @@ jobs:
           CIBW_ENABLE: cpython-freethreading
           CIBW_BEFORE_BUILD: "python -m pip install -U pip && python -m pip install tox"
       - name: Save wheels
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: cibw-wheels-${{ matrix.os }}-${{ strategy.job-index }}
           path: ./wheelhouse/*.whl
@@ -141,7 +141,7 @@ jobs:
     runs-on: ubuntu-latest
     if: startsWith(github.ref, 'refs/tags/')
     steps:
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         with:
           pattern: cibw-*
           path: dist

From 029f36597b8d182484f3c38c6be6a71ad07ddc96 Mon Sep 17 00:00:00 2001
From: Johannes Jordan <johannes.jordan@sick.de>
Date: Mon, 12 Jan 2026 13:29:35 +0100
Subject: [PATCH 36/36] Strip debug symbols from lz4 build

When a wheel is built using lz4 library source files bundled with the package,
we advise the linker to strip debug symbols from the binary output.

This leads to a significant size reduction of the wheel.

Fixes #305
---
 setup.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/setup.py b/setup.py
index 350b551..eb9030f 100644
--- a/setup.py
+++ b/setup.py
@@ -121,6 +121,8 @@ def pkgconfig_installed_check(lib, required_version, default):
             '-Wall',
             '-Wundef'
         ]
+        # strip debug symbols from libraries to reduce wheel size
+        extension_kwargs['extra_link_args'] = ['-s']
 else:
     print('Unrecognized compiler: {0}'.format(compiler))
     sys.exit(1)