From fd5dee6a02f3b7f46b9f4ab81314b2cfcec9d076 Mon Sep 17 00:00:00 2001
From: chalmer lowe <chalmerlowe@google.com>
Date: Tue, 5 May 2026 15:34:29 -0400
Subject: [PATCH 01/11] feat(crc32c): Update setup.cfg and pyproject.toml
 metadata

---
 packages/google-crc32c/pyproject.toml | 2 +-
 packages/google-crc32c/setup.cfg      | 4 +---
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/packages/google-crc32c/pyproject.toml b/packages/google-crc32c/pyproject.toml
index ddff644d32e6..80a83161b2d4 100644
--- a/packages/google-crc32c/pyproject.toml
+++ b/packages/google-crc32c/pyproject.toml
@@ -21,4 +21,4 @@ name = "google-crc32c"
 version = "1.8.0"
 description = "A python wrapper of the C library 'Google CRC32C'"
 readme = "README.md"
-requires-python = ">=3.8"
+requires-python = ">=3.10"
diff --git a/packages/google-crc32c/setup.cfg b/packages/google-crc32c/setup.cfg
index 9e97011dd7ad..9341e9586e00 100644
--- a/packages/google-crc32c/setup.cfg
+++ b/packages/google-crc32c/setup.cfg
@@ -29,8 +29,6 @@ classifiers =
     Intended Audience :: Developers
     Operating System :: OS Independent
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.8
-    Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
     Programming Language :: Python :: 3.12
@@ -39,7 +37,7 @@ classifiers =
 
 [options]
 zip_safe = True
-python_requires = >=3.8
+python_requires = >=3.10
 
 [options.extras_require]
 testing = pytest

From f9e4bbc480c330abfe869f32883c6af0e045699c Mon Sep 17 00:00:00 2001
From: chalmer lowe <chalmerlowe@google.com>
Date: Tue, 5 May 2026 15:34:40 -0400
Subject: [PATCH 02/11] feat(crc32c): Update Nox sessions to remove old
 versions

---
 packages/google-crc32c/noxfile.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/packages/google-crc32c/noxfile.py b/packages/google-crc32c/noxfile.py
index b58397c9e0b4..e9826cc8df57 100644
--- a/packages/google-crc32c/noxfile.py
+++ b/packages/google-crc32c/noxfile.py
@@ -25,9 +25,8 @@
 
 # Constants
 DEFAULT_PYTHON_VERSION = "3.14"
-UNIT_TEST_PYTHON_VERSIONS = ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+UNIT_TEST_PYTHON_VERSIONS = ["3.10", "3.11", "3.12", "3.13", "3.14"]
 ALL_PYTHON = list(UNIT_TEST_PYTHON_VERSIONS)
-ALL_PYTHON.extend(["3.7"])
 
 FLAKE8_VERSION = "flake8==6.1.0"
 BLACK_VERSION = "black[jupyter]==23.7.0"

From 1485335cfa8cb4d46e4259bfea8a8e61fcf0c575 Mon Sep 17 00:00:00 2001
From: chalmer lowe <chalmerlowe@google.com>
Date: Tue, 5 May 2026 15:34:57 -0400
Subject: [PATCH 03/11] docs(crc32c): Update README.md to remove Python 3.9
 references

---
 packages/google-crc32c/README.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/google-crc32c/README.md b/packages/google-crc32c/README.md
index 78088ce883b1..862972fc7994 100644
--- a/packages/google-crc32c/README.md
+++ b/packages/google-crc32c/README.md
@@ -9,8 +9,8 @@ C toolchain.
 
 # Currently Published Wheels
 
-Wheels are currently published for CPython 3.9, 3.10, 3.11, 3.12, 3.13 and 3.14
-for multiple architectures. PyPy 3.9 and 3.10 are also supported for Linux.
+Wheels are currently published for CPython 3.10, 3.11, 3.12, 3.13 and 3.14
+for multiple architectures. PyPy 3.10 is also supported for Linux.
 For information on building your own wheels please view [BUILDING.md](BUILDING.md).
 
 

From 517822c94501d27e4b86676433164c11c8a20ba3 Mon Sep 17 00:00:00 2001
From: chalmer lowe <chalmerlowe@google.com>
Date: Tue, 5 May 2026 15:35:38 -0400
Subject: [PATCH 04/11] fix(crc32c): Update check session to use editable
 install instead of wheels

---
 packages/google-crc32c/noxfile.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/google-crc32c/noxfile.py b/packages/google-crc32c/noxfile.py
index e9826cc8df57..f0414fa80bf1 100644
--- a/packages/google-crc32c/noxfile.py
+++ b/packages/google-crc32c/noxfile.py
@@ -67,7 +67,7 @@ def build_libcrc32c(session):
 @nox.session(python=UNIT_TEST_PYTHON_VERSIONS)
 def check(session):
     session.install("pytest")
-    session.install("--no-index", f"--find-links={HERE}/wheels", "google-crc32c")
+    session.install("-e", ".")
 
     # Run py.test against the unit tests.
     session.run("py.test", "tests")

From 4669b87ef454cda131672bc7bc2b9616b8ad5a89 Mon Sep 17 00:00:00 2001
From: chalmer lowe <chalmerlowe@google.com>
Date: Tue, 5 May 2026 16:03:22 -0400
Subject: [PATCH 05/11] chore(crc32c): Revert check session to use pre-built
 wheels

---
 packages/google-crc32c/noxfile.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/google-crc32c/noxfile.py b/packages/google-crc32c/noxfile.py
index f0414fa80bf1..e9826cc8df57 100644
--- a/packages/google-crc32c/noxfile.py
+++ b/packages/google-crc32c/noxfile.py
@@ -67,7 +67,7 @@ def build_libcrc32c(session):
 @nox.session(python=UNIT_TEST_PYTHON_VERSIONS)
 def check(session):
     session.install("pytest")
-    session.install("-e", ".")
+    session.install("--no-index", f"--find-links={HERE}/wheels", "google-crc32c")
 
     # Run py.test against the unit tests.
     session.run("py.test", "tests")

From ec62ea240ea6f044c87bd5e253ab6bd1f4962515 Mon Sep 17 00:00:00 2001
From: chalmer lowe <chalmerlowe@google.com>
Date: Wed, 6 May 2026 06:30:29 -0400
Subject: [PATCH 06/11] feat(google-crc32c): Remove obsolete conditional
 dependency in setup.py

---
 packages/google-crc32c/setup.py | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/packages/google-crc32c/setup.py b/packages/google-crc32c/setup.py
index cebbca973d22..5b63d48d125f 100644
--- a/packages/google-crc32c/setup.py
+++ b/packages/google-crc32c/setup.py
@@ -104,9 +104,7 @@ def build_c_extension():
         package_dir={"": "src"},
         ext_modules=[module],
         cmdclass={"build_ext": BuildExtWithDLL},
-        install_requires=[
-            "importlib_resources>=1.3 ; python_version < '3.9' and os_name == 'nt'"
-        ],
+        install_requires=[],
     )
 
 

From 60d25db51314fdfbe0e367c615b954e2baa29e1d Mon Sep 17 00:00:00 2001
From: chalmer lowe <chalmerlowe@google.com>
Date: Wed, 6 May 2026 06:30:34 -0400
Subject: [PATCH 07/11] feat(google-crc32c): Remove obsolete comment in
 __config__.py

---
 packages/google-crc32c/src/google_crc32c/__config__.py | 1 -
 1 file changed, 1 deletion(-)

diff --git a/packages/google-crc32c/src/google_crc32c/__config__.py b/packages/google-crc32c/src/google_crc32c/__config__.py
index 536f0307e7f2..24a8ba960ede 100644
--- a/packages/google-crc32c/src/google_crc32c/__config__.py
+++ b/packages/google-crc32c/src/google_crc32c/__config__.py
@@ -30,7 +30,6 @@ def modify_path():
 
         extra_dll_dir = str(_resources_files("google_crc32c") / "extra-dll")
         if os.path.isdir(extra_dll_dir):
-            # Python 3.8+ uses add_dll_directory.
             os.add_dll_directory(extra_dll_dir)
     except ImportError:
         pass

From 44a7a05575198b9fa340245c5531a8a17d69c765 Mon Sep 17 00:00:00 2001
From: chalmer lowe <chalmerlowe@google.com>
Date: Wed, 6 May 2026 06:30:40 -0400
Subject: [PATCH 08/11] feat(google-crc32c): Update mypy configuration to
 Python 3.10

---
 packages/google-crc32c/mypy.ini | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/google-crc32c/mypy.ini b/packages/google-crc32c/mypy.ini
index 8efb6f7241c8..569486a9ce60 100644
--- a/packages/google-crc32c/mypy.ini
+++ b/packages/google-crc32c/mypy.ini
@@ -1,3 +1,3 @@
 [mypy]
-python_version = 3.9
+python_version = 3.10
 exclude = tests/unit/resources/

From fd53f2ef9d16a29bb27cb5b12fdac695a4374749 Mon Sep 17 00:00:00 2001
From: chalmer lowe <chalmerlowe@google.com>
Date: Wed, 6 May 2026 06:30:46 -0400
Subject: [PATCH 09/11] feat(google-crc32c): Update publish_python_wheel.sh to
 use Python 3.10

---
 .../google-crc32c/scripts/osx/publish_python_wheel.sh     | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/packages/google-crc32c/scripts/osx/publish_python_wheel.sh b/packages/google-crc32c/scripts/osx/publish_python_wheel.sh
index c5288eac09fc..e5d6ab115b6f 100755
--- a/packages/google-crc32c/scripts/osx/publish_python_wheel.sh
+++ b/packages/google-crc32c/scripts/osx/publish_python_wheel.sh
@@ -15,11 +15,11 @@
 
 set -eo pipefail
 
-if [ -z "$(pyenv versions --bare | grep 3.8)" ]; then
-    echo "Python 3.8 is not installed. Installing..."
-    pyenv install 3.8
+if [ -z "$(pyenv versions --bare | grep 3.10)" ]; then
+    echo "Python 3.10 is not installed. Installing..."
+    pyenv install 3.10
 fi
-pyenv shell 3.8
+pyenv shell 3.10
 
 python -m pip install "setuptools<71"
 

From 243719607d27d50968f819b6c74cad3b8196d9c9 Mon Sep 17 00:00:00 2001
From: chalmer lowe <chalmerlowe@google.com>
Date: Wed, 6 May 2026 06:30:51 -0400
Subject: [PATCH 10/11] feat(google-crc32c): Remove Python 3.9 from supported
 versions in osx/build.sh

---
 packages/google-crc32c/scripts/osx/build.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/google-crc32c/scripts/osx/build.sh b/packages/google-crc32c/scripts/osx/build.sh
index 075ffcc26193..b567178d0280 100755
--- a/packages/google-crc32c/scripts/osx/build.sh
+++ b/packages/google-crc32c/scripts/osx/build.sh
@@ -41,7 +41,7 @@ ${OSX_DIR}/build_c_lib.sh
 rm -rf /Users/kbuilder/.pyenv
 git clone https://github.com/pyenv/pyenv.git /Users/kbuilder/.pyenv
 
-SUPPORTED_PYTHON_VERSIONS=("3.9" "3.10" "3.11" "3.12" "3.13" "3.14")
+SUPPORTED_PYTHON_VERSIONS=("3.10" "3.11" "3.12" "3.13" "3.14")
 
 for PYTHON_VERSION in ${SUPPORTED_PYTHON_VERSIONS[@]}; do
     echo "Build wheel for Python ${PYTHON_VERSION}"

From a67972e370f525e86c13449ae58f8a213de3d812 Mon Sep 17 00:00:00 2001
From: chalmer lowe <chalmerlowe@google.com>
Date: Wed, 6 May 2026 08:37:59 -0400
Subject: [PATCH 11/11] fix(crc32c): skip building wheels for Python 3.9

---
 packages/google-crc32c/scripts/manylinux/build_on_centos.sh | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/packages/google-crc32c/scripts/manylinux/build_on_centos.sh b/packages/google-crc32c/scripts/manylinux/build_on_centos.sh
index 9507dda09262..323319320e4d 100755
--- a/packages/google-crc32c/scripts/manylinux/build_on_centos.sh
+++ b/packages/google-crc32c/scripts/manylinux/build_on_centos.sh
@@ -48,10 +48,7 @@ if [[ -z ${BUILD_PYTHON} ]]; then
     # Collect all target Python versions.
     for PYTHON_BIN in /opt/python/*/bin; do
         # H/T: https://stackoverflow.com/a/229606/1068170
-        if [[ "${PYTHON_BIN}" == *"39"* ]]; then
-            PYTHON_VERSIONS="${PYTHON_VERSIONS} ${PYTHON_BIN}"
-            continue
-        elif [[ "${PYTHON_BIN}" == *"310"* ]]; then
+        if [[ "${PYTHON_BIN}" == *"310"* ]]; then
             PYTHON_VERSIONS="${PYTHON_VERSIONS} ${PYTHON_BIN}"
             continue
         elif [[ "${PYTHON_BIN}" == *"311"* ]]; then