Drop support for EOL Python 3.9

ci-matrix.py

@@ -9,7 +9,7 @@
 import argparse
 import json
 import sys
-from typing import Any, Optional
+from typing import Any
 
 import yaml
 from packaging.version import Version
@@ -39,7 +39,7 @@ def meets_conditional_version(version: str, min_version: str) -> bool:
     return Version(version) >= Version(min_version)
 
 
-def parse_labels(labels: Optional[str]) -> dict[str, set[str]]:
+def parse_labels(labels: str | None) -> dict[str, set[str]]:
     """Parse labels into a dict of category filters."""
     if not labels:
         return {}
@@ -106,7 +106,7 @@ def should_include_entry(entry: dict[str, str], filters: dict[str, set[str]]) ->
 
 def generate_docker_matrix_entries(
     runners: dict[str, Any],
-    platform_filter: Optional[str] = None,
+    platform_filter: str | None = None,
 ) -> list[dict[str, str]]:
     """Generate matrix entries for docker image builds."""
     if platform_filter and platform_filter != "linux":
@@ -132,7 +132,7 @@ def generate_crate_build_matrix_entries(
     runners: dict[str, Any],
     config: dict[str, Any],
     force_crate_build: bool = False,
-    platform_filter: Optional[str] = None,
+    platform_filter: str | None = None,
 ) -> list[dict[str, str]]:
     """Generate matrix entries for crate builds based on python build matrix."""
     needed_builds = set()
@@ -181,8 +181,8 @@ def generate_crate_build_matrix_entries(
 def generate_python_build_matrix_entries(
     config: dict[str, Any],
     runners: dict[str, Any],
-    platform_filter: Optional[str] = None,
-    label_filters: Optional[dict[str, set[str]]] = None,
+    platform_filter: str | None = None,
+    label_filters: dict[str, set[str]] | None = None,
 ) -> list[dict[str, str]]:
     """Generate matrix entries for python builds."""
     matrix_entries = []
@@ -348,10 +348,10 @@ def main() -> None:
     args = parse_args()
     labels = parse_labels(args.labels)
 
-    with open(CI_TARGETS_YAML, "r") as f:
+    with open(CI_TARGETS_YAML) as f:
         config = yaml.safe_load(f)
 
-    with open(CI_RUNNERS_YAML, "r") as f:
+    with open(CI_RUNNERS_YAML) as f:
         runners = yaml.safe_load(f)
 
     # If only free runners are allowed, reduce to a subset

ci-targets.yaml

@@ -4,7 +4,6 @@ darwin:
   aarch64-apple-darwin:
     arch: aarch64
     python_versions:
-      - "3.9"
       - "3.10"
       - "3.11"
       - "3.12"
@@ -23,7 +22,6 @@ darwin:
   x86_64-apple-darwin:
     arch: x86_64
     python_versions:
-      - "3.9"
       - "3.10"
       - "3.11"
       - "3.12"
@@ -44,7 +42,6 @@ linux:
     arch: aarch64
     libc: gnu
     python_versions:
-      - "3.9"
       - "3.10"
       - "3.11"
       - "3.12"
@@ -64,7 +61,6 @@ linux:
     arch: armv7
     libc: gnu
     python_versions:
-      - "3.9"
       - "3.10"
       - "3.11"
       - "3.12"
@@ -86,7 +82,6 @@ linux:
     arch: armv7
     libc: gnu
     python_versions:
-      - "3.9"
       - "3.10"
       - "3.11"
       - "3.12"
@@ -108,7 +103,6 @@ linux:
     arch: s390x
     libc: gnu
     python_versions:
-      - "3.9"
       - "3.10"
       - "3.11"
       - "3.12"
@@ -130,7 +124,6 @@ linux:
     arch: ppc64le
     libc: gnu
     python_versions:
-      - "3.9"
       - "3.10"
       - "3.11"
       - "3.12"
@@ -152,7 +145,6 @@ linux:
     arch: riscv64
     libc: gnu
     python_versions:
-      - "3.9"
       - "3.10"
       - "3.11"
       - "3.12"
@@ -174,7 +166,6 @@ linux:
     arch: x86_64
     libc: gnu
     python_versions:
-      - "3.9"
       - "3.10"
       - "3.11"
       - "3.12"
@@ -196,7 +187,6 @@ linux:
     arch_variant: v2
     libc: gnu
     python_versions:
-      - "3.9"
       - "3.10"
       - "3.11"
       - "3.12"
@@ -218,7 +208,6 @@ linux:
     arch_variant: v3
     libc: gnu
     python_versions:
-      - "3.9"
       - "3.10"
       - "3.11"
       - "3.12"
@@ -240,7 +229,6 @@ linux:
     arch_variant: v4
     libc: gnu
     python_versions:
-      - "3.9"
       - "3.10"
       - "3.11"
       - "3.12"
@@ -261,7 +249,6 @@ linux:
     arch: x86_64
     libc: musl
     python_versions:
-      - "3.9"
       - "3.10"
       - "3.11"
       - "3.12"
@@ -288,7 +275,6 @@ linux:
     arch_variant: v2
     libc: musl
     python_versions:
-      - "3.9"
       - "3.10"
       - "3.11"
       - "3.12"
@@ -315,7 +301,6 @@ linux:
     arch_variant: v3
     libc: musl
     python_versions:
-      - "3.9"
       - "3.10"
       - "3.11"
       - "3.12"
@@ -342,7 +327,6 @@ linux:
     arch_variant: v4
     libc: musl
     python_versions:
-      - "3.9"
       - "3.10"
       - "3.11"
       - "3.12"
@@ -368,7 +352,6 @@ linux:
     arch: aarch64
     libc: musl
     python_versions:
-      - "3.9"
       - "3.10"
       - "3.11"
       - "3.12"
@@ -396,7 +379,6 @@ windows:
     arch: x86
     vcvars: vcvars32.bat
     python_versions:
-      - "3.9"
       - "3.10"
       - "3.11"
       - "3.12"
@@ -414,7 +396,6 @@ windows:
     arch: x86_64
     vcvars: vcvars64.bat
     python_versions:
-      - "3.9"
       - "3.10"
       - "3.11"
       - "3.12"
@@ -432,8 +413,7 @@ windows:
     arch: aarch64
     vcvars: vcvarsamd64_arm64.bat
     python_versions:
-      # On 3.9 / 3.10, `_tkinter` is failing to be included in the build
-      # - "3.9"
+      # On 3.10, `_tkinter` is failing to be included in the build
       # - "3.10"
       - "3.11"
       - "3.12"

cpython-unix/Makefile

@@ -6,7 +6,7 @@ BUILD := $(HERE)/build.py
 NULL :=
 SPACE := $(subst ,, )
 
-ALL_PYTHON_VERSIONS := 3.9 3.10 3.11 3.12 3.13 3.14 3.15
+ALL_PYTHON_VERSIONS := 3.10 3.11 3.12 3.13 3.14 3.15
 
 ifndef PYBUILD_TARGET_TRIPLE
     $(error PYBUILD_TARGET_TRIPLE not defined)

cpython-unix/build-cpython.sh

@@ -72,7 +72,7 @@ fi
 # configure doesn't support cross-compiling on LoongArch. Teach it.
 if [ "${PYBUILD_PLATFORM}" != "macos" ]; then
     case "${PYTHON_MAJMIN_VERSION}" in
-        3.9|3.10|3.11)
+        3.10|3.11)
             patch -p1 -i ${ROOT}/patch-configure-add-loongarch-triplet.patch
             ;;
     esac
@@ -85,13 +85,6 @@ if [ -n "${CROSS_COMPILING}" ]; then
     fi
 fi
 
-# This patch is slightly different on Python 3.10+.
-if [ -n "${PYTHON_MEETS_MINIMUM_VERSION_3_10}" ]; then
-    patch -p1 -i ${ROOT}/patch-xopen-source-ios.patch
-else
-    patch -p1 -i ${ROOT}/patch-xopen-source-ios-legacy.patch
-fi
-
 # LIBTOOL_CRUFT is unused and breaks cross-compiling on macOS. Nuke it.
 # Submitted upstream at https://github.com/python/cpython/pull/101048.
 if [ -n "${PYTHON_MEETS_MAXIMUM_VERSION_3_11}" ]; then
@@ -175,9 +168,7 @@ fi
 # executable. This behavior is kinda suspect on all platforms, as it could be adding
 # library dependencies that shouldn't need to be there.
 if [[ "${PYBUILD_PLATFORM}" = macos* ]]; then
-    if [ "${PYTHON_MAJMIN_VERSION}" = "3.9" ]; then
-        patch -p1 -i ${ROOT}/patch-python-link-modules-3.9.patch
-    elif [ "${PYTHON_MAJMIN_VERSION}" = "3.10" ]; then
+    if [ "${PYTHON_MAJMIN_VERSION}" = "3.10" ]; then
         patch -p1 -i ${ROOT}/patch-python-link-modules-3.10.patch
     else
         patch -p1 -i ${ROOT}/patch-python-link-modules-3.11.patch
@@ -205,43 +196,19 @@ elif [ "${PYTHON_MAJMIN_VERSION}" = "3.11" ]; then
     patch -p1 -i ${ROOT}/patch-tkinter-3.11.patch
 elif [ "${PYTHON_MAJMIN_VERSION}" = "3.10" ]; then
     patch -p1 -i ${ROOT}/patch-tkinter-3.10.patch
-else
-    patch -p1 -i ${ROOT}/patch-tkinter-3.9.patch
 fi
 
 # Code that runs at ctypes module import time does not work with
 # non-dynamic binaries. Patch Python to work around this.
 # See https://bugs.python.org/issue37060.
 patch -p1 -i ${ROOT}/patch-ctypes-static-binary.patch
 
-# Older versions of Python need patching to work with modern mpdecimal.
-if [ -n "${PYTHON_MEETS_MAXIMUM_VERSION_3_9}" ]; then
-    patch -p1 -i ${ROOT}/patch-decimal-modern-mpdecimal.patch
-fi
-
 # We build against libedit instead of readline in all environments.
 #
 # On macOS, we use the system/SDK libedit, which is likely somewhat old.
 #
 # On Linux, we use our own libedit, which should be modern.
 #
-# CPython 3.10 added proper support for building against libedit outside of
-# macOS. On older versions, we need to hack up readline.c to build against
-# libedit. This patch breaks older libedit (as seen on macOS) so don't apply
-# on macOS.
-if [[ -n "${PYTHON_MEETS_MAXIMUM_VERSION_3_9}" && "${PYBUILD_PLATFORM}" != macos* ]]; then
-    # readline.c assumes that a modern readline API version has a free_history_entry().
-    # but libedit does not. Change the #ifdef accordingly.
-    #
-    # Similarly, we invoke configure using readline, which sets
-    # HAVE_RL_COMPLETION_SUPPRESS_APPEND improperly. So hack that. This is a bug
-    # in our build system, as we should probably be invoking configure again when
-    # using libedit.
-    #
-    # Similar workaround for on_completion_display_matches_hook.
-    patch -p1 -i ${ROOT}/patch-readline-libedit.patch
-fi
-
 if [ "${PYTHON_MAJMIN_VERSION}" = "3.10" ]; then
     # Even though 3.10 is libedit aware, it isn't compatible with newer
     # versions of libedit. We need to backport a 3.11 patch to teach the
@@ -367,11 +334,8 @@ fi
 # Always build against libedit instead of the default of readline.
 # macOS always uses the system libedit, so no tweaks are needed.
 if [[ "${PYBUILD_PLATFORM}" != macos* ]]; then
-    # CPython 3.10 introduced proper configure support for libedit, so add configure
-    # flag there.
-    if [ -n "${PYTHON_MEETS_MINIMUM_VERSION_3_10}" ]; then
-        EXTRA_CONFIGURE_FLAGS="${EXTRA_CONFIGURE_FLAGS} --with-readline=editline"
-    fi
+    # Add configure flag for proper configure support for libedit.
+    EXTRA_CONFIGURE_FLAGS="${EXTRA_CONFIGURE_FLAGS} --with-readline=editline"
 fi
 
 # On Python 3.14+, enable the tail calling interpreter which is more performant.
@@ -546,25 +510,6 @@ if [[ "${PYBUILD_PLATFORM}" = macos* ]]; then
     # as Homebrew or MacPorts. So nerf the check to prevent this.
     CONFIGURE_FLAGS="${CONFIGURE_FLAGS} ac_cv_lib_intl_textdomain=no"
 
-    # CPython 3.9+ have proper support for weakly referenced symbols and
-    # runtime availability guards. CPython 3.8 will emit weak symbol references
-    # (this happens automatically when linking due to SDK version targeting).
-    # However CPython lacks the runtime availability guards for most symbols.
-    # This results in runtime failures when attempting to resolve/call the
-    # symbol.
-    if [ -n "${PYTHON_MEETS_MAXIMUM_VERSION_3_9}" ]; then
-        if [ "${TARGET_TRIPLE}" != "aarch64-apple-darwin" ]; then
-            for symbol in clock_getres clock_gettime clock_settime faccessat fchmodat fchownat fdopendir fstatat futimens getentropy linkat mkdirat openat preadv pwritev readlinkat renameat symlinkat unlinkat utimensat uttype; do
-                CONFIGURE_FLAGS="${CONFIGURE_FLAGS} ac_cv_func_${symbol}=no"
-            done
-        fi
-
-        # mkfifoat, mknodat introduced in SDK 13.0.
-        for symbol in mkfifoat mknodat; do
-            CONFIGURE_FLAGS="${CONFIGURE_FLAGS} ac_cv_func_${symbol}=no"
-        done
-    fi
-
     if [ -n "${CROSS_COMPILING}" ]; then
         # Python's configure doesn't support cross-compiling on macOS. So we need
         # to explicitly set MACHDEP to avoid busted checks. The code for setting
@@ -574,26 +519,10 @@ if [[ "${PYBUILD_PLATFORM}" = macos* ]]; then
             CONFIGURE_FLAGS="${CONFIGURE_FLAGS} MACHDEP=darwin"
             CONFIGURE_FLAGS="${CONFIGURE_FLAGS} ac_sys_system=Darwin"
             CONFIGURE_FLAGS="${CONFIGURE_FLAGS} ac_sys_release=$(uname -r)"
-        elif [ "${TARGET_TRIPLE}" = "aarch64-apple-ios" ]; then
-            CONFIGURE_FLAGS="${CONFIGURE_FLAGS} MACHDEP=iOS"
-            CONFIGURE_FLAGS="${CONFIGURE_FLAGS} ac_sys_system=iOS"
-            CONFIGURE_FLAGS="${CONFIGURE_FLAGS} ac_sys_release="
-            # clock_settime() not available on iOS.
-            CONFIGURE_FLAGS="${CONFIGURE_FLAGS} ac_cv_func_clock_settime=no"
-            # getentropy() not available on iOS.
-            CONFIGURE_FLAGS="${CONFIGURE_FLAGS} ac_cv_func_getentropy=no"
         elif [ "${TARGET_TRIPLE}" = "x86_64-apple-darwin" ]; then
             CONFIGURE_FLAGS="${CONFIGURE_FLAGS} MACHDEP=darwin"
             CONFIGURE_FLAGS="${CONFIGURE_FLAGS} ac_sys_system=Darwin"
             CONFIGURE_FLAGS="${CONFIGURE_FLAGS} ac_sys_release=$(uname -r)"
-        elif [ "${TARGET_TRIPLE}" = "x86_64-apple-ios" ]; then
-            CONFIGURE_FLAGS="${CONFIGURE_FLAGS} MACHDEP=iOS"
-            CONFIGURE_FLAGS="${CONFIGURE_FLAGS} ac_sys_system=iOS"
-            CONFIGURE_FLAGS="${CONFIGURE_FLAGS} ac_sys_release="
-            # clock_settime() not available on iOS.
-            CONFIGURE_FLAGS="${CONFIGURE_FLAGS} ac_cv_func_clock_settime=no"
-            # getentropy() not available on iOS.
-            CONFIGURE_FLAGS="${CONFIGURE_FLAGS} ac_cv_func_getentropy=no"
         else
             echo "unsupported target triple: ${TARGET_TRIPLE}"
             exit 1

cpython-unix/build-main.py

@@ -55,7 +55,6 @@ def main():
     parser.add_argument(
         "--python",
         choices={
-            "cpython-3.9",
             "cpython-3.10",
             "cpython-3.11",
             "cpython-3.12",

cpython-unix/build-sqlite.sh

@@ -16,12 +16,6 @@ pushd sqlite-autoconf-${SQLITE_VERSION}
 CONFIGURE_FLAGS="--build=${BUILD_TRIPLE} --host=${TARGET_TRIPLE}"
 CONFIGURE_FLAGS="${CONFIGURE_FLAGS} --prefix=/tools/deps --disable-shared"
 
-if [ "${TARGET_TRIPLE}" = "aarch64-apple-ios" ]; then
-    CONFIGURE_FLAGS="${CONFIGURE_FLAGS} ac_cv_search_system=no"
-elif [ "${TARGET_TRIPLE}" = "x86_64-apple-ios" ]; then
-    CONFIGURE_FLAGS="${CONFIGURE_FLAGS} ac_cv_search_system=no"
-fi
-
 # The SQLite autosetup looks for the C++ compiler if the variable is set and will fail if it's not
 # found, even if it's not needed. We don't actually have a C++ compiler in some builds, so ensure
 # it's not looked for.