diff --git a/.github/workflows/jit.yml b/.github/workflows/jit.yml
deleted file mode 100644
index 754f179f10..0000000000
--- a/.github/workflows/jit.yml
+++ /dev/null
@@ -1,181 +0,0 @@
-name: JIT
-on:
-  pull_request:
-    paths:
-      - '**jit**'
-      - 'Python/bytecodes.c'
-      - 'Python/optimizer*.c'
-      - '!Python/perf_jit_trampoline.c'
-      - '!**/*.md'
-      - '!**/*.ini'
-  push:
-    paths:
-      - '**jit**'
-      - 'Python/bytecodes.c'
-      - 'Python/optimizer*.c'
-      - '!Python/perf_jit_trampoline.c'
-      - '!**/*.md'
-      - '!**/*.ini'
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
-
-jobs:
-  interpreter:
-    name: Interpreter (Debug)
-    runs-on: ubuntu-latest
-    timeout-minutes: 90
-    steps:
-      - uses: actions/checkout@v4
-      - name: Build tier two interpreter
-        run: |
-          ./configure --enable-experimental-jit=interpreter --with-pydebug
-          make all --jobs 4
-      - name: Test tier two interpreter
-        run: |
-          ./python -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
-  jit:
-    name: ${{ matrix.target }} (${{ matrix.debug && 'Debug' || 'Release' }})
-    needs: interpreter
-    runs-on: ${{ matrix.runner }}
-    timeout-minutes: 90
-    strategy:
-      fail-fast: false
-      matrix:
-        target:
-          - i686-pc-windows-msvc/msvc
-          - x86_64-pc-windows-msvc/msvc
-          - aarch64-pc-windows-msvc/msvc
-          - x86_64-apple-darwin/clang
-          - aarch64-apple-darwin/clang
-          - x86_64-unknown-linux-gnu/gcc
-          - x86_64-unknown-linux-gnu/clang
-          - aarch64-unknown-linux-gnu/gcc
-          - aarch64-unknown-linux-gnu/clang
-        debug:
-          - true
-          - false
-        llvm:
-          - 18
-        include:
-          - target: i686-pc-windows-msvc/msvc
-            architecture: Win32
-            runner: windows-latest
-            compiler: msvc
-          - target: x86_64-pc-windows-msvc/msvc
-            architecture: x64
-            runner: windows-latest
-            compiler: msvc
-          - target: aarch64-pc-windows-msvc/msvc
-            architecture: ARM64
-            runner: windows-latest
-            compiler: msvc
-          - target: x86_64-apple-darwin/clang
-            architecture: x86_64
-            runner: macos-13
-            compiler: clang
-          - target: aarch64-apple-darwin/clang
-            architecture: aarch64
-            runner: macos-14
-            compiler: clang
-          - target: x86_64-unknown-linux-gnu/gcc
-            architecture: x86_64
-            runner: ubuntu-latest
-            compiler: gcc
-          - target: x86_64-unknown-linux-gnu/clang
-            architecture: x86_64
-            runner: ubuntu-latest
-            compiler: clang
-          - target: aarch64-unknown-linux-gnu/gcc
-            architecture: aarch64
-            runner: ubuntu-latest
-            compiler: gcc
-          - target: aarch64-unknown-linux-gnu/clang
-            architecture: aarch64
-            runner: ubuntu-latest
-            compiler: clang
-    env:
-      CC: ${{ matrix.compiler }}
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: '3.11'
-
-      - name: Native Windows
-        if: runner.os == 'Windows' && matrix.architecture != 'ARM64'
-        run: |
-          choco install llvm --allow-downgrade --no-progress --version ${{ matrix.llvm }}.1.0
-          ./PCbuild/build.bat --experimental-jit ${{ matrix.debug && '-d' || '--pgo' }} -p ${{ matrix.architecture }}
-          ./PCbuild/rt.bat ${{ matrix.debug && '-d' || '' }} -p ${{ matrix.architecture }} -q --multiprocess 0 --timeout 4500 --verbose2 --verbose3
-
-      # No PGO or tests (yet):
-      - name: Emulated Windows
-        if: runner.os == 'Windows' && matrix.architecture == 'ARM64'
-        run: |
-          choco install llvm --allow-downgrade --no-progress --version ${{ matrix.llvm }}.1.0
-          ./PCbuild/build.bat --experimental-jit ${{ matrix.debug && '-d' || '' }} -p ${{ matrix.architecture }}
-
-      - name: Native macOS
-        if: runner.os == 'macOS'
-        run: |
-          brew update
-          brew install llvm@${{ matrix.llvm }}
-          SDKROOT="$(xcrun --show-sdk-path)" \
-            ./configure --enable-experimental-jit ${{ matrix.debug && '--with-pydebug' || '--enable-optimizations --with-lto' }}
-          make all --jobs 4
-          ./python.exe -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
-
-      - name: Native Linux
-        if: runner.os == 'Linux' && matrix.architecture == 'x86_64'
-        run: |
-          sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh ${{ matrix.llvm }}
-          export PATH="$(llvm-config-${{ matrix.llvm }} --bindir):$PATH"
-          ./configure --enable-experimental-jit ${{ matrix.debug && '--with-pydebug' || '--enable-optimizations --with-lto' }}
-          make all --jobs 4
-          ./python -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
-
-      - name: Emulated Linux
-        if: runner.os == 'Linux' && matrix.architecture != 'x86_64'
-        # The --ignorefile on ./python -m test is used to exclude tests known to fail when running on an emulated Linux.
-        run: |
-          sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh ${{ matrix.llvm }}
-          export PATH="$(llvm-config-${{ matrix.llvm }} --bindir):$PATH"
-          ./configure --prefix="$(pwd)/../build"
-          make install --jobs 4
-          make clean --jobs 4
-          export HOST=${{ matrix.architecture }}-linux-gnu
-          sudo apt install --yes "gcc-$HOST" qemu-user
-          ${{ !matrix.debug && matrix.compiler == 'clang' && './configure --enable-optimizations' || '' }}
-          ${{ !matrix.debug && matrix.compiler == 'clang' && 'make profile-run-stamp --jobs 4' || '' }}
-          export QEMU_LD_PREFIX="/usr/$HOST"
-          CC="${{ matrix.compiler == 'clang' && 'clang --target=$HOST' || '$HOST-gcc' }}" \
-            CPP="$CC --preprocess" \
-            HOSTRUNNER=qemu-${{ matrix.architecture }} \
-            ./configure --enable-experimental-jit ${{ matrix.debug && '--with-pydebug' || '--with-lto' }} --build=x86_64-linux-gnu --host="$HOST" --with-build-python=../build/bin/python3 --with-pkg-config=no ac_cv_buggy_getaddrinfo=no ac_cv_file__dev_ptc=no ac_cv_file__dev_ptmx=yes
-          make all --jobs 4
-          ./python -m test --ignorefile=Tools/jit/ignore-tests-emulated-linux.txt --multiprocess 0 --timeout 4500 --verbose2 --verbose3
-
-  jit-with-disabled-gil:
-    name: Free-Threaded (Debug)
-    needs: interpreter
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: '3.11'
-      - name: Build with JIT enabled and GIL disabled
-        run: |
-          sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh 18
-          export PATH="$(llvm-config-18 --bindir):$PATH"
-          ./configure --enable-experimental-jit --with-pydebug --disable-gil
-          make all --jobs 4
-      - name: Run tests
-        run: |
-          ./python -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
diff --git a/.github/workflows/reusable-change-detection.yml b/.github/workflows/reusable-change-detection.yml
deleted file mode 100644
index 6f599f7554..0000000000
--- a/.github/workflows/reusable-change-detection.yml
+++ /dev/null
@@ -1,158 +0,0 @@
----
-
-name: Change detection
-
-on:  # yamllint disable-line rule:truthy
-  workflow_call:
-    outputs:
-      # Some of the referenced steps set outputs conditionally and there may be
-      # cases when referencing them evaluates to empty strings. It is nice to
-      # work with proper booleans so they have to be evaluated through JSON
-      # conversion in the expressions. However, empty strings used like that
-      # may trigger all sorts of undefined and hard-to-debug behaviors in
-      # GitHub Actions CI/CD. To help with this, all of the outputs set here
-      # that are meant to be used as boolean flags (and not arbitrary strings),
-      # MUST have fallbacks with default values set. A common pattern would be
-      # to add ` || false` to all such expressions here, in the output
-      # definitions. They can then later be safely used through the following
-      # idiom in job conditionals and other expressions. Here's some examples:
-      #
-      #   if: fromJSON(needs.change-detection.outputs.run-docs)
-      #
-      #   ${{
-      #        fromJSON(needs.change-detection.outputs.run-tests)
-      #        && 'truthy-branch'
-      #        || 'falsy-branch'
-      #   }}
-      #
-      config_hash:
-        description: Config hash value for use in cache keys
-        value: ${{ jobs.compute-changes.outputs.config-hash }}  # str
-      run-docs:
-        description: Whether to build the docs
-        value: ${{ jobs.compute-changes.outputs.run-docs || false }}  # bool
-      run_tests:
-        description: Whether to run the regular tests
-        value: ${{ jobs.compute-changes.outputs.run-tests || false }}  # bool
-      run-win-msi:
-        description: Whether to run the MSI installer smoke tests
-        value: >-  # bool
-          ${{ jobs.compute-changes.outputs.run-win-msi || false }}
-      run_hypothesis:
-        description: Whether to run the Hypothesis tests
-        value: >-  # bool
-          ${{ jobs.compute-changes.outputs.run-hypothesis || false }}
-      run_cifuzz:
-        description: Whether to run the CIFuzz job
-        value: >-  # bool
-          ${{ jobs.compute-changes.outputs.run-cifuzz || false }}
-
-jobs:
-  compute-changes:
-    name: Compute changed files
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    outputs:
-      config-hash: ${{ steps.config-hash.outputs.hash }}
-      run-cifuzz: ${{ steps.check.outputs.run-cifuzz }}
-      run-docs: ${{ steps.docs-changes.outputs.run-docs }}
-      run-hypothesis: ${{ steps.check.outputs.run-hypothesis }}
-      run-tests: ${{ steps.check.outputs.run-tests }}
-      run-win-msi: ${{ steps.win-msi-changes.outputs.run-win-msi }}
-    steps:
-    - run: >-
-        echo '${{ github.event_name }}'
-    - uses: actions/checkout@v4
-    - name: Check for source changes
-      id: check
-      run: |
-        if [ -z "$GITHUB_BASE_REF" ]; then
-          echo "run-tests=true" >> $GITHUB_OUTPUT
-        else
-          git fetch origin $GITHUB_BASE_REF --depth=1
-          # git diff "origin/$GITHUB_BASE_REF..." (3 dots) may be more
-          # reliable than git diff "origin/$GITHUB_BASE_REF.." (2 dots),
-          # but it requires to download more commits (this job uses
-          # "git fetch --depth=1").
-          #
-          # git diff "origin/$GITHUB_BASE_REF..." (3 dots) works with Git
-          # 2.26, but Git 2.28 is stricter and fails with "no merge base".
-          #
-          # git diff "origin/$GITHUB_BASE_REF.." (2 dots) should be enough on
-          # GitHub, since GitHub starts by merging origin/$GITHUB_BASE_REF
-          # 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" >> $GITHUB_OUTPUT || true
-        fi
-
-        # Check if we should run hypothesis tests
-        GIT_BRANCH=${GITHUB_BASE_REF:-${GITHUB_REF#refs/heads/}}
-        echo $GIT_BRANCH
-        if $(echo "$GIT_BRANCH" | grep -q -w '3\.\(8\|9\|10\|11\)'); then
-          echo "Branch too old for hypothesis tests"
-          echo "run-hypothesis=false" >> $GITHUB_OUTPUT
-        else
-          echo "Run hypothesis tests"
-          echo "run-hypothesis=true" >> $GITHUB_OUTPUT
-        fi
-
-        # oss-fuzz maintains a configuration for fuzzing the main branch of
-        # CPython, so CIFuzz should be run only for code that is likely to be
-        # merged into the main branch; compatibility with older branches may
-        # be broken.
-        FUZZ_RELEVANT_FILES='(\.c$|\.h$|\.cpp$|^configure$|^\.github/workflows/build\.yml$|^Modules/_xxtestfuzz)'
-        if [ "$GITHUB_BASE_REF" = "main" ] && [ "$(git diff --name-only origin/$GITHUB_BASE_REF.. | grep -qE $FUZZ_RELEVANT_FILES; echo $?)" -eq 0 ]; then
-          # The tests are pretty slow so they are executed only for PRs
-          # changing relevant files.
-          echo "Run CIFuzz tests"
-          echo "run-cifuzz=true" >> $GITHUB_OUTPUT
-        else
-          echo "Branch too old for CIFuzz tests; or no C files were changed"
-          echo "run-cifuzz=false" >> $GITHUB_OUTPUT
-        fi
-    - name: Compute hash for config cache key
-      id: config-hash
-      run: |
-        echo "hash=${{ hashFiles('configure', 'configure.ac', '.github/workflows/build.yml') }}" >> $GITHUB_OUTPUT
-    - name: Get a list of the changed documentation-related files
-      if: github.event_name == 'pull_request'
-      id: changed-docs-files
-      uses: Ana06/get-changed-files@v2.3.0
-      with:
-        filter: |
-          Doc/**
-          Misc/**
-          .github/workflows/reusable-docs.yml
-        format: csv  # works for paths with spaces
-    - name: Check for docs changes
-      # We only want to run this on PRs when related files are changed,
-      # or when user triggers manual workflow run.
-      if: >-
-        (
-          github.event_name == 'pull_request'
-          && steps.changed-docs-files.outputs.added_modified_renamed != ''
-        ) || github.event_name == 'workflow_dispatch'
-      id: docs-changes
-      run: |
-        echo "run-docs=true" >> "${GITHUB_OUTPUT}"
-    - name: Get a list of the MSI installer-related files
-      if: github.event_name == 'pull_request'
-      id: changed-win-msi-files
-      uses: Ana06/get-changed-files@v2.3.0
-      with:
-        filter: |
-          Tools/msi/**
-          .github/workflows/reusable-windows-msi.yml
-        format: csv  # works for paths with spaces
-    - name: Check for changes in MSI installer-related files
-      # We only want to run this on PRs when related files are changed,
-      # or when user triggers manual workflow run.
-      if: >-
-        (
-          github.event_name == 'pull_request'
-          && steps.changed-win-msi-files.outputs.added_modified_renamed != ''
-        ) || github.event_name == 'workflow_dispatch'
-      id: win-msi-changes
-      run: |
-        echo "run-win-msi=true" >> "${GITHUB_OUTPUT}"
diff --git a/.github/workflows/reusable-macos.yml b/.github/workflows/reusable-macos.yml
deleted file mode 100644
index b422754588..0000000000
--- a/.github/workflows/reusable-macos.yml
+++ /dev/null
@@ -1,70 +0,0 @@
-on:
-  workflow_call:
-    inputs:
-      config_hash:
-        required: true
-        type: string
-      free-threading:
-        required: false
-        type: boolean
-        default: false
-      os:
-        description: OS to run the job
-        required: true
-        type: string
-
-jobs:
-  build_macos:
-    name: build and test (${{ inputs.os }})
-    timeout-minutes: 60
-    env:
-      HOMEBREW_NO_ANALYTICS: 1
-      HOMEBREW_NO_AUTO_UPDATE: 1
-      HOMEBREW_NO_INSTALL_CLEANUP: 1
-      HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK: 1
-      PYTHONSTRICTEXTENSIONBUILD: 1
-      TERM: linux
-    runs-on: ${{ inputs.os }}
-    steps:
-    - uses: actions/checkout@v4
-    - name: Runner image version
-      run: echo "IMAGE_VERSION=${ImageVersion}" >> $GITHUB_ENV
-    - name: Restore config.cache
-      uses: actions/cache@v4
-      with:
-        path: config.cache
-        key: ${{ github.job }}-${{ inputs.os }}-${{ env.IMAGE_VERSION }}-${{ inputs.config_hash }}
-    - name: Install Homebrew dependencies
-      run: brew install pkg-config openssl@3.0 xz gdbm tcl-tk make
-    - name: Configure CPython
-      run: |
-        GDBM_CFLAGS="-I$(brew --prefix gdbm)/include" \
-        GDBM_LIBS="-L$(brew --prefix gdbm)/lib -lgdbm" \
-        ./configure \
-          --config-cache \
-          --with-pydebug \
-          --enable-slower-safety \
-          --enable-safety \
-          ${{ inputs.free-threading && '--disable-gil' || '' }} \
-          --prefix=/opt/python-dev \
-          --with-openssl="$(brew --prefix openssl@3.0)"
-    - name: Build CPython
-      if : ${{ inputs.free-threading || inputs.os != 'macos-13' }}
-      run: gmake -j8
-    - name: Build CPython for compiler warning check
-      if : ${{ !inputs.free-threading && inputs.os == 'macos-13' }}
-      run: set -o pipefail; gmake -j8 --output-sync 2>&1 | tee compiler_output_macos.txt
-    - name: Display build info
-      run: make pythoninfo
-    - name: Check compiler warnings
-      if : ${{ !inputs.free-threading && inputs.os == 'macos-13' }}
-      run: >-
-        python3 Tools/build/check_warnings.py
-        --compiler-output-file-path=compiler_output_macos.txt
-        --warning-ignore-file-path=Tools/build/.warningignore_macos
-        --compiler-output-type=clang
-        --fail-on-regression
-        --fail-on-improvement
-        --path-prefix="./"
-    - name: Tests
-      run: make test
diff --git a/.github/workflows/reusable-tsan.yml b/.github/workflows/reusable-tsan.yml
deleted file mode 100644
index 27f4eacd86..0000000000
--- a/.github/workflows/reusable-tsan.yml
+++ /dev/null
@@ -1,76 +0,0 @@
-on:
-  workflow_call:
-    inputs:
-      config_hash:
-        required: true
-        type: string
-      options:
-        required: true
-        type: string
-      suppressions_path:
-        description: 'A repo relative path to the suppressions file'
-        required: true
-        type: string
-      tsan_logs_artifact_name:
-        description: 'Name of the TSAN logs artifact. Must be unique for each job.'
-        required: true
-        type: string
-
-jobs:
-  build_tsan_reusable:
-    name: 'Thread sanitizer'
-    runs-on: ubuntu-22.04
-    timeout-minutes: 60
-    steps:
-    - uses: actions/checkout@v4
-    - name: Runner image version
-      run: echo "IMAGE_VERSION=${ImageVersion}" >> $GITHUB_ENV
-    - name: Restore config.cache
-      uses: actions/cache@v4
-      with:
-        path: config.cache
-        key: ${{ github.job }}-${{ runner.os }}-${{ env.IMAGE_VERSION }}-${{ inputs.config_hash }}
-    - name: Install Dependencies
-      run: |
-        sudo ./.github/workflows/posix-deps-apt.sh
-        # Install clang-18
-        wget https://apt.llvm.org/llvm.sh
-        chmod +x llvm.sh
-        sudo ./llvm.sh 17  # gh-121946: llvm-18 package is temporarily broken
-        sudo update-alternatives --install /usr/bin/clang clang /usr/bin/clang-17 100
-        sudo update-alternatives --set clang /usr/bin/clang-17
-        sudo update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-17 100
-        sudo update-alternatives --set clang++ /usr/bin/clang++-17
-        # Reduce ASLR to avoid TSAN crashing
-        sudo sysctl -w vm.mmap_rnd_bits=28
-    - name: TSAN Option Setup
-      run: |
-        echo "TSAN_OPTIONS=log_path=${GITHUB_WORKSPACE}/tsan_log suppressions=${GITHUB_WORKSPACE}/${{ inputs.suppressions_path }} handle_segv=0" >> $GITHUB_ENV
-        echo "CC=clang" >> $GITHUB_ENV
-        echo "CXX=clang++" >> $GITHUB_ENV
-    - name: Add ccache to PATH
-      run: |
-        echo "PATH=/usr/lib/ccache:$PATH" >> $GITHUB_ENV
-    - name: Configure ccache action
-      uses: hendrikmuhs/ccache-action@v1.2
-      with:
-        save: ${{ github.event_name == 'push' }}
-        max-size: "200M"
-    - name: Configure CPython
-      run: ${{ inputs.options }}
-    - name: Build CPython
-      run: make -j4
-    - name: Display build info
-      run: make pythoninfo
-    - name: Tests
-      run: ./python -m test --tsan -j4
-    - name: Display TSAN logs
-      if: always()
-      run: find ${GITHUB_WORKSPACE} -name 'tsan_log.*' | xargs head -n 1000
-    - name: Archive TSAN logs
-      if: always()
-      uses: actions/upload-artifact@v4
-      with:
-        name: ${{ inputs.tsan_logs_artifact_name }}
-        path: tsan_log.*
-        if-no-files-found: ignore
diff --git a/.github/workflows/reusable-ubuntu.yml b/.github/workflows/reusable-ubuntu.yml
deleted file mode 100644
index 769f1210de..0000000000
--- a/.github/workflows/reusable-ubuntu.yml
+++ /dev/null
@@ -1,106 +0,0 @@
-on:
-  workflow_call:
-    inputs:
-      config_hash:
-        required: true
-        type: string
-      free-threading:
-        description: Whether to use free-threaded mode
-        required: false
-        type: boolean
-        default: false
-
-jobs:
-  build_ubuntu_reusable:
-    name: 'build and test'
-    timeout-minutes: 60
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-22.04]
-    env:
-      FORCE_COLOR: 1
-      OPENSSL_VER: 3.0.15
-      PYTHONSTRICTEXTENSIONBUILD: 1
-      TERM: linux
-    steps:
-    - uses: actions/checkout@v4
-    - name: Register gcc problem matcher
-      run: echo "::add-matcher::.github/problem-matchers/gcc.json"
-    - name: Install dependencies
-      run: sudo ./.github/workflows/posix-deps-apt.sh
-    - name: Configure OpenSSL env vars
-      run: |
-        echo "MULTISSL_DIR=${GITHUB_WORKSPACE}/multissl" >> $GITHUB_ENV
-        echo "OPENSSL_DIR=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}" >> $GITHUB_ENV
-        echo "LD_LIBRARY_PATH=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}/lib" >> $GITHUB_ENV
-    - name: 'Restore OpenSSL build'
-      id: cache-openssl
-      uses: actions/cache@v4
-      with:
-        path: ./multissl/openssl/${{ env.OPENSSL_VER }}
-        key: ${{ matrix.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
-    - name: Install OpenSSL
-      if: steps.cache-openssl.outputs.cache-hit != 'true'
-      run: python3 Tools/ssl/multissltests.py --steps=library --base-directory $MULTISSL_DIR --openssl $OPENSSL_VER --system Linux
-    - name: Add ccache to PATH
-      run: |
-        echo "PATH=/usr/lib/ccache:$PATH" >> $GITHUB_ENV
-    - name: Configure ccache action
-      uses: hendrikmuhs/ccache-action@v1.2
-      with:
-        save: ${{ github.event_name == 'push' }}
-        max-size: "200M"
-    - name: Setup directory envs for out-of-tree builds
-      run: |
-        echo "CPYTHON_RO_SRCDIR=$(realpath -m ${GITHUB_WORKSPACE}/../cpython-ro-srcdir)" >> $GITHUB_ENV
-        echo "CPYTHON_BUILDDIR=$(realpath -m ${GITHUB_WORKSPACE}/../cpython-builddir)" >> $GITHUB_ENV
-    - name: Create directories for read-only out-of-tree builds
-      run: mkdir -p $CPYTHON_RO_SRCDIR $CPYTHON_BUILDDIR
-    - name: Bind mount sources read-only
-      run: sudo mount --bind -o ro $GITHUB_WORKSPACE $CPYTHON_RO_SRCDIR
-    - name: Runner image version
-      run: echo "IMAGE_VERSION=${ImageVersion}" >> $GITHUB_ENV
-    - name: Restore config.cache
-      uses: actions/cache@v4
-      with:
-        path: ${{ env.CPYTHON_BUILDDIR }}/config.cache
-        key: ${{ github.job }}-${{ runner.os }}-${{ env.IMAGE_VERSION }}-${{ inputs.config_hash }}
-    - name: Configure CPython out-of-tree
-      working-directory: ${{ env.CPYTHON_BUILDDIR }}
-      run: >-
-        ../cpython-ro-srcdir/configure
-        --config-cache
-        --with-pydebug
-        --enable-slower-safety
-        --enable-safety
-        --with-openssl=$OPENSSL_DIR
-        ${{ fromJSON(inputs.free-threading) && '--disable-gil' || '' }}
-    - name: Build CPython out-of-tree
-      if: ${{ inputs.free-threading }}
-      working-directory: ${{ env.CPYTHON_BUILDDIR }}
-      run: make -j4
-    - name: Build CPython out-of-tree (for compiler warning check)
-      if: ${{ !inputs.free-threading}}
-      working-directory: ${{ env.CPYTHON_BUILDDIR }}
-      run: set -o pipefail; make -j4 --output-sync 2>&1 | tee compiler_output_ubuntu.txt
-    - name: Display build info
-      working-directory: ${{ env.CPYTHON_BUILDDIR }}
-      run: make pythoninfo
-    - name: Check compiler warnings
-      if: ${{ !inputs.free-threading }}
-      run: >-
-        python Tools/build/check_warnings.py
-        --compiler-output-file-path=${{ env.CPYTHON_BUILDDIR }}/compiler_output_ubuntu.txt
-        --warning-ignore-file-path ${GITHUB_WORKSPACE}/Tools/build/.warningignore_ubuntu
-        --compiler-output-type=gcc
-        --fail-on-regression
-        --fail-on-improvement
-        --path-prefix="../cpython-ro-srcdir/"
-    - name: Remount sources writable for tests
-      # some tests write to srcdir, lack of pyc files slows down testing
-      run: sudo mount $CPYTHON_RO_SRCDIR -oremount,rw
-    - name: Tests
-      working-directory: ${{ env.CPYTHON_BUILDDIR }}
-      run: xvfb-run make test
diff --git a/.github/workflows/reusable-wasi.yml b/.github/workflows/reusable-wasi.yml
deleted file mode 100644
index 1b1a68c0ba..0000000000
--- a/.github/workflows/reusable-wasi.yml
+++ /dev/null
@@ -1,75 +0,0 @@
-on:
-  workflow_call:
-    inputs:
-      config_hash:
-        required: true
-        type: string
-
-jobs:
-  build_wasi_reusable:
-    name: 'build and test'
-    timeout-minutes: 60
-    runs-on: ubuntu-22.04
-    env:
-      WASMTIME_VERSION: 22.0.0
-      WASI_SDK_VERSION: 24
-      WASI_SDK_PATH: /opt/wasi-sdk
-      CROSS_BUILD_PYTHON: cross-build/build
-      CROSS_BUILD_WASI: cross-build/wasm32-wasi
-    steps:
-    - uses: actions/checkout@v4
-    # No problem resolver registered as one doesn't currently exist for Clang.
-    - name: "Install wasmtime"
-      uses: bytecodealliance/actions/wasmtime/setup@v1
-      with:
-        version: ${{ env.WASMTIME_VERSION }}
-    - name: "Restore WASI SDK"
-      id: cache-wasi-sdk
-      uses: actions/cache@v4
-      with:
-        path: ${{ env.WASI_SDK_PATH }}
-        key: ${{ runner.os }}-wasi-sdk-${{ env.WASI_SDK_VERSION }}
-    - name: "Install WASI SDK"
-      if: steps.cache-wasi-sdk.outputs.cache-hit != 'true'
-      run: |
-        mkdir ${{ env.WASI_SDK_PATH }} && \
-        curl -s -S --location https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${{ env.WASI_SDK_VERSION }}/wasi-sdk-${{ env.WASI_SDK_VERSION }}.0-x86_64-linux.tar.gz | \
-        tar --strip-components 1 --directory ${{ env.WASI_SDK_PATH }} --extract --gunzip
-    - name: "Configure ccache action"
-      uses: hendrikmuhs/ccache-action@v1.2
-      with:
-        save: ${{ github.event_name == 'push' }}
-        max-size: "200M"
-    - name: "Add ccache to PATH"
-      run: echo "PATH=/usr/lib/ccache:$PATH" >> $GITHUB_ENV
-    - name: "Install Python"
-      uses: actions/setup-python@v5
-      with:
-        python-version: '3.x'
-    - name: "Restore Python build config.cache"
-      uses: actions/cache@v4
-      with:
-        path: ${{ env.CROSS_BUILD_PYTHON }}/config.cache
-        # Include env.pythonLocation in key to avoid changes in environment when setup-python updates Python.
-        # Include the hash of `Tools/wasm/wasi.py` as it may change the environment variables.
-        # (Make sure to keep the key in sync with the other config.cache step below.)
-        key: ${{ github.job }}-${{ runner.os }}-${{ env.IMAGE_VERSION }}-${{ env.WASI_SDK_VERSION }}-${{ env.WASMTIME_VERSION }}-${{ inputs.config_hash }}-${{ hashFiles('Tools/wasm/wasi.py') }}-${{ env.pythonLocation }}
-    - name: "Configure build Python"
-      run: python3 Tools/wasm/wasi.py configure-build-python -- --config-cache --with-pydebug
-    - name: "Make build Python"
-      run: python3 Tools/wasm/wasi.py make-build-python
-    - name: "Restore host config.cache"
-      uses: actions/cache@v4
-      with:
-        path: ${{ env.CROSS_BUILD_WASI }}/config.cache
-        # Should be kept in sync with the other config.cache step above.
-        key: ${{ github.job }}-${{ runner.os }}-${{ env.IMAGE_VERSION }}-${{ env.WASI_SDK_VERSION }}-${{ env.WASMTIME_VERSION }}-${{ inputs.config_hash }}-${{ hashFiles('Tools/wasm/wasi.py') }}-${{ env.pythonLocation }}
-    - name: "Configure host"
-      # `--with-pydebug` inferred from configure-build-python
-      run: python3 Tools/wasm/wasi.py configure-host -- --config-cache
-    - name: "Make host"
-      run: python3 Tools/wasm/wasi.py make-host
-    - name: "Display build info"
-      run: make --directory ${{ env.CROSS_BUILD_WASI }} pythoninfo
-    - name: "Test"
-      run: make --directory ${{ env.CROSS_BUILD_WASI }} test
diff --git a/.github/workflows/reusable-windows-msi.yml b/.github/workflows/reusable-windows-msi.yml
deleted file mode 100644
index fc34ab7c3e..0000000000
--- a/.github/workflows/reusable-windows-msi.yml
+++ /dev/null
@@ -1,24 +0,0 @@
-name: TestsMSI
-
-on:
-  workflow_call:
-    inputs:
-      arch:
-        description: CPU architecture
-        required: true
-        type: string
-
-permissions:
-  contents: read
-
-jobs:
-  build:
-    name: installer for ${{ inputs.arch }}
-    runs-on: windows-latest
-    timeout-minutes: 60
-    env:
-      IncludeFreethreaded: true
-    steps:
-    - uses: actions/checkout@v4
-    - name: Build CPython installer
-      run: .\Tools\msi\build.bat --doc -${{ inputs.arch }}
diff --git a/.github/workflows/reusable-windows.yml b/.github/workflows/reusable-windows.yml
deleted file mode 100644
index e9c3c8e05a..0000000000
--- a/.github/workflows/reusable-windows.yml
+++ /dev/null
@@ -1,45 +0,0 @@
-on:
-  workflow_call:
-    inputs:
-      arch:
-        description: CPU architecture
-        required: true
-        type: string
-      free-threading:
-        description: Whether to compile CPython in free-threading mode
-        required: false
-        type: boolean
-        default: false
-
-env:
-  IncludeUwp: >-
-    true
-
-jobs:
-  build:
-    name: >-
-      build${{ inputs.arch != 'arm64' && ' and test' || '' }}
-      (${{ inputs.arch }})
-    runs-on: windows-latest
-    timeout-minutes: 60
-    steps:
-    - uses: actions/checkout@v4
-    - name: Register MSVC problem matcher
-      if: inputs.arch != 'Win32'
-      run: echo "::add-matcher::.github/problem-matchers/msvc.json"
-    - name: Build CPython
-      run: >-
-        .\PCbuild\build.bat
-        -e -d -v
-        -p ${{ inputs.arch }}
-        ${{ fromJSON(inputs.free-threading) && '--disable-gil' || '' }}
-    - name: Display build info
-      if: inputs.arch != 'arm64'
-      run: .\python.bat -m test.pythoninfo
-    - name: Tests
-      if: inputs.arch != 'arm64'
-      run: >-
-        .\PCbuild\rt.bat
-        -p ${{ inputs.arch }}
-        -d -q --fast-ci
-        ${{ fromJSON(inputs.free-threading) && '--disable-gil' || '' }}