Merge branch 'main' into add-cookies-partitioned-support

Author: giles-v

.github/CODEOWNERS

@@ -5,11 +5,11 @@
 # https://git-scm.com/docs/gitignore#_pattern_format
 
 # GitHub
-.github/**                    @ezio-melotti @hugovk
+.github/**                    @ezio-melotti @hugovk @AA-Turner
 
 # pre-commit
 .pre-commit-config.yaml       @hugovk @AlexWaygood
-.ruff.toml                    @hugovk @AlexWaygood
+.ruff.toml                    @hugovk @AlexWaygood @AA-Turner
 
 # Build system
 configure*                    @erlend-aasland @corona10
@@ -56,6 +56,14 @@ Tools/c-analyzer/             @ericsnowcurrently
 # dbm
 **/*dbm*                      @corona10 @erlend-aasland @serhiy-storchaka
 
+# Doc/ tools
+Doc/conf.py                   @AA-Turner @hugovk
+Doc/Makefile                  @AA-Turner @hugovk
+Doc/make.bat                  @AA-Turner @hugovk
+Doc/requirements.txt          @AA-Turner @hugovk
+Doc/_static/**                @AA-Turner @hugovk
+Doc/tools/**                  @AA-Turner @hugovk
+
 # runtime state/lifecycle
 **/*pylifecycle*              @ericsnowcurrently
 **/*pystate*                  @ericsnowcurrently
@@ -96,13 +104,14 @@ Doc/library/site.rst          @FFY00
 Lib/test/test_except*.py      @iritkatriel
 Objects/exceptions.c          @iritkatriel
 
-# Hashing
-**/*hashlib*                  @gpshead @tiran
+# Hashing & cryptographic primitives
+**/*hashlib*                  @gpshead @tiran @picnixz
 **/*pyhash*                   @gpshead @tiran
-**/sha*                       @gpshead @tiran
-Modules/md5*                  @gpshead @tiran
-**/*blake*                    @gpshead @tiran
+**/sha*                       @gpshead @tiran @picnixz
+Modules/md5*                  @gpshead @tiran @picnixz
+**/*blake*                    @gpshead @tiran @picnixz
 Modules/_hacl/**              @gpshead
+**/*hmac*                     @gpshead @picnixz
 
 # logging
 **/*logging*                  @vsajip
@@ -292,6 +301,10 @@ Lib/configparser.py           @jaraco
 Lib/test/test_configparser.py @jaraco
 
 # Doc sections
-Doc/reference/                @willingc
+Doc/reference/                @willingc @AA-Turner
 
 **/*weakref*                  @kumaraditya303
+
+# Colorize
+Lib/_colorize.py              @hugovk
+Lib/test/test__colorize.py    @hugovk

.github/actionlint.yaml

@@ -1,10 +1,10 @@
 self-hosted-runner:
-  labels: ["ubuntu-24.04-aarch64", "windows-aarch64"]
+  labels: ["windows-aarch64"]
 
 config-variables: null
 
 paths:
   .github/workflows/**/*.yml:
      ignore:
      - 1st argument of function call is not assignable
-     - SC2(015|038|086|091|097|098|129|155)
+     - SC2(015|038|086|091|097|098|129|155)

.github/workflows/build.yml

@@ -46,7 +46,7 @@ jobs:
     # reproducible: to get the same tools versions (autoconf, aclocal, ...)
     runs-on: ubuntu-24.04
     container:
-      image: ghcr.io/python/autoconf:2024.11.11.11786316759
+      image: ghcr.io/python/autoconf:2025.01.02.12581854023
     timeout-minutes: 60
     needs: check_source
     if: needs.check_source.outputs.run_tests == 'true'
@@ -63,7 +63,7 @@ jobs:
         run: echo "IMAGE_VERSION=${ImageVersion}" >> "$GITHUB_ENV"
       - name: Check Autoconf and aclocal versions
         run: |
-          grep "Generated by GNU Autoconf 2.71" configure
+          grep "Generated by GNU Autoconf 2.72" configure
           grep "aclocal 1.16.5" aclocal.m4
           grep -q "runstatedir" configure
           grep -q "PKG_PROG_PKG_CONFIG" aclocal.m4
@@ -231,24 +231,31 @@ jobs:
     name: >-
       Ubuntu
       ${{ fromJSON(matrix.free-threading) && '(free-threading)' || '' }}
+      ${{ fromJSON(matrix.bolt) && '(bolt)' || '' }}
     needs: check_source
     if: needs.check_source.outputs.run_tests == 'true'
     strategy:
       matrix:
+        bolt:
+        - false
+        - true
         free-threading:
         - false
         - true
         os:
         - ubuntu-24.04
-        - ubuntu-24.04-aarch64
-        is-fork:  # only used for the exclusion trick
-        - ${{ github.repository_owner != 'python' }}
+        - ubuntu-24.04-arm
         exclude:
-        - os: ubuntu-24.04-aarch64
-          is-fork: true
+        # Do not test BOLT with free-threading, to conserve resources
+        - bolt: true
+          free-threading: true
+        # BOLT currently crashes during instrumentation on aarch64
+        - os: ubuntu-24.04-arm
+          bolt: true
     uses: ./.github/workflows/reusable-ubuntu.yml
     with:
       config_hash: ${{ needs.check_source.outputs.config_hash }}
+      bolt-optimizations: ${{ matrix.bolt }}
       free-threading: ${{ matrix.free-threading }}
       os: ${{ matrix.os }}
 

.github/workflows/jit.yml

@@ -83,8 +83,7 @@ jobs:
             runner: ubuntu-24.04
           - target: aarch64-unknown-linux-gnu/gcc
             architecture: aarch64
-            # Forks don't have access to our paid AArch64 runners. These jobs are skipped below:
-            runner: ${{ github.repository_owner == 'python' && 'ubuntu-24.04-aarch64' || 'ubuntu-24.04' }}
+            runner: ubuntu-24.04-arm
     steps:
       - uses: actions/checkout@v4
         with:
@@ -123,8 +122,7 @@ jobs:
           ./python.exe -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
       - name: Native Linux
-        # Forks don't have access to our paid AArch64 runners. Skip those:
-        if: runner.os == 'Linux' && (matrix.architecture == 'x86_64' || github.repository_owner == 'python')
+        if: runner.os == 'Linux'
         run: |
           sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh ${{ matrix.llvm }}
           export PATH="$(llvm-config-${{ matrix.llvm }} --bindir):$PATH"

.github/workflows/reusable-change-detection.yml

@@ -83,7 +83,22 @@ jobs:
           # into the PR branch anyway.
           #
           # https://github.com/python/core-workflow/issues/373
-          git diff --name-only "origin/$GITHUB_BASE_REF.." | grep -qvE '(\.rst$|^Doc|^Misc|^\.pre-commit-config\.yaml$|\.ruff\.toml$|\.md$|mypy\.ini$)' && echo "run-tests=true" >> "$GITHUB_OUTPUT" || true
+          grep_ignore_args=(
+            # file extensions
+              -e '\.md$'
+              -e '\.rst$'
+            # top-level folders
+              -e '^Doc/'
+              -e '^Misc/'
+            # configuration files
+              -e '^\.github/CODEOWNERS$'
+              -e '^\.pre-commit-config\.yaml$'
+              -e '\.ruff\.toml$'
+              -e 'mypy\.ini$'
+          )
+          git diff --name-only "origin/$GITHUB_BASE_REF.."        \
+            | grep -qvE "${grep_ignore_args[@]}"                  \
+            && echo "run-tests=true" >> "$GITHUB_OUTPUT" || true
         fi
 
         # Check if we should run hypothesis tests

.github/workflows/reusable-docs.yml

@@ -65,8 +65,8 @@ jobs:
       continue-on-error: true
       run: |
         set -Eeuo pipefail
-        # Build docs with the '-n' (nit-picky) option; write warnings to file
-        make -C Doc/ PYTHON=../python SPHINXOPTS="-q -n -W --keep-going -w sphinx-warnings.txt" html
+        # Build docs with the nit-picky option; write warnings to file
+        make -C Doc/ PYTHON=../python SPHINXOPTS="--quiet --nitpicky --fail-on-warning --keep-going --warning-file sphinx-warnings.txt" html
     - name: 'Check warnings'
       if: github.event_name == 'pull_request'
       run: |
@@ -76,30 +76,10 @@ jobs:
           --fail-if-improved \
           --fail-if-new-news-nit
 
-  # This build doesn't use problem matchers or check annotations
-  build_doc_oldest_supported_sphinx:
-    name: 'Docs (Oldest Sphinx)'
-    runs-on: ubuntu-latest
-    timeout-minutes: 60
-    steps:
-    - uses: actions/checkout@v4
-      with:
-        persist-credentials: false
-    - name: 'Set up Python'
-      uses: actions/setup-python@v5
-      with:
-        python-version: '3.13'  # known to work with Sphinx 7.2.6
-        cache: 'pip'
-        cache-dependency-path: 'Doc/requirements-oldest-sphinx.txt'
-    - name: 'Install build dependencies'
-      run: make -C Doc/ venv REQUIREMENTS="requirements-oldest-sphinx.txt"
-    - name: 'Build HTML documentation'
-      run: make -C Doc/ SPHINXOPTS="-q" SPHINXERRORHANDLING="-W --keep-going" html
-
   # Run "doctest" on HEAD as new syntax doesn't exist in the latest stable release
   doctest:
     name: 'Doctest'
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     timeout-minutes: 60
     steps:
     - uses: actions/checkout@v4
@@ -121,4 +101,4 @@ jobs:
       run: make -C Doc/ PYTHON=../python venv
     # Use "xvfb-run" since some doctest tests open GUI windows
     - name: 'Run documentation doctest'
-      run: xvfb-run make -C Doc/ PYTHON=../python SPHINXERRORHANDLING="-W --keep-going" doctest
+      run: xvfb-run make -C Doc/ PYTHON=../python SPHINXERRORHANDLING="--fail-on-warning --keep-going" doctest

.github/workflows/reusable-macos.yml

@@ -42,9 +42,10 @@ jobs:
       run: |
         brew install pkg-config [email protected] xz gdbm tcl-tk@8 make
         # Because alternate versions are not symlinked into place by default:
-        brew link tcl-tk@8
+        brew link --overwrite tcl-tk@8
     - name: Configure CPython
       run: |
+        MACOSX_DEPLOYMENT_TARGET=10.15 \
         GDBM_CFLAGS="-I$(brew --prefix gdbm)/include" \
         GDBM_LIBS="-L$(brew --prefix gdbm)/lib -lgdbm" \
         ./configure \

.github/workflows/reusable-ubuntu.yml

@@ -6,6 +6,11 @@ on:
       config_hash:
         required: true
         type: string
+      bolt-optimizations:
+        description: Whether to enable BOLT optimizations
+        required: false
+        type: boolean
+        default: false
       free-threading:
         description: Whether to use free-threaded mode
         required: false
@@ -34,6 +39,12 @@ jobs:
       run: echo "::add-matcher::.github/problem-matchers/gcc.json"
     - name: Install dependencies
       run: sudo ./.github/workflows/posix-deps-apt.sh
+    - name: Install Clang and BOLT
+      if: ${{ fromJSON(inputs.bolt-optimizations) }}
+      run: |
+        sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh 19
+        sudo apt-get install bolt-19
+        echo PATH="$(llvm-config-19 --bindir):$PATH" >> $GITHUB_ENV
     - name: Configure OpenSSL env vars
       run: |
         echo "MULTISSL_DIR=${GITHUB_WORKSPACE}/multissl" >> "$GITHUB_ENV"
@@ -73,14 +84,18 @@ jobs:
         key: ${{ github.job }}-${{ runner.os }}-${{ env.IMAGE_VERSION }}-${{ inputs.config_hash }}
     - name: Configure CPython out-of-tree
       working-directory: ${{ env.CPYTHON_BUILDDIR }}
+      # `test_unpickle_module_race` writes to the source directory, which is
+      # read-only during builds — so we exclude it from profiling with BOLT.
       run: >-
+        PROFILE_TASK='-m test --pgo --ignore test_unpickle_module_race'
         ../cpython-ro-srcdir/configure
         --config-cache
         --with-pydebug
         --enable-slower-safety
         --enable-safety
         --with-openssl="$OPENSSL_DIR"
         ${{ fromJSON(inputs.free-threading) && '--disable-gil' || '' }}
+        ${{ fromJSON(inputs.bolt-optimizations) && '--enable-bolt' || '' }}
     - name: Build CPython out-of-tree
       if: ${{ inputs.free-threading }}
       working-directory: ${{ env.CPYTHON_BUILDDIR }}

.github/workflows/reusable-windows-msi.yml

@@ -24,4 +24,5 @@ jobs:
       with:
         persist-credentials: false
     - name: Build CPython installer
-      run: .\Tools\msi\build.bat --doc -"${ARCH}"
+      run: ./Tools/msi/build.bat --doc -"${ARCH}"
+      shell: bash

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.8.2
+    rev: v0.9.1
     hooks:
       - id: ruff
         name: Run Ruff (lint) on Doc/
@@ -29,12 +29,10 @@ repos:
       - id: black
         name: Run Black on Tools/build/check_warnings.py
         files: ^Tools/build/check_warnings.py
-        language_version: python3.12
         args: [--line-length=79]
       - id: black
         name: Run Black on Tools/jit/
         files: ^Tools/jit/
-        language_version: python3.12
 
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v5.0.0
@@ -51,18 +49,19 @@ repos:
         types_or: [c, inc, python, rst]
 
   - repo: https://github.com/python-jsonschema/check-jsonschema
-    rev: 0.30.0
+    rev: 0.31.0
     hooks:
       - id: check-dependabot
       - id: check-github-workflows
+      - id: check-readthedocs
 
   - repo: https://github.com/rhysd/actionlint
-    rev: v1.7.4
+    rev: v1.7.7
     hooks:
       - id: actionlint
 
   - repo: https://github.com/woodruffw/zizmor-pre-commit
-    rev: v0.8.0
+    rev: v1.1.1
     hooks:
       - id: zizmor