gh-137638: Remove macos-13 from GitHub Actions

.github/workflows/build.yml

@@ -202,13 +202,10 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        # Cirrus and macos-14 are M1, macos-13 is default GHA Intel.
-        # macOS 13 only runs tests against the GIL-enabled CPython.
         # Cirrus used for upstream, macos-14 for forks.
         os:
         - ghcr.io/cirruslabs/macos-runner:sonoma
         - macos-14
-        - macos-13
         is-fork:  # only used for the exclusion trick
         - ${{ github.repository_owner != 'python' }}
         free-threading:
@@ -219,8 +216,6 @@ jobs:
           is-fork: true
         - os: macos-14
           is-fork: false
-        - os: macos-13
-          free-threading: true
     uses: ./.github/workflows/reusable-macos.yml
     with:
       config_hash: ${{ needs.build-context.outputs.config-hash }}

.github/workflows/jit.yml

@@ -60,7 +60,6 @@ jobs:
           - 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
           - aarch64-unknown-linux-gnu/gcc
@@ -79,9 +78,6 @@ jobs:
           - target: aarch64-pc-windows-msvc/msvc
             architecture: ARM64
             runner: windows-11-arm
-          - target: x86_64-apple-darwin/clang
-            architecture: x86_64
-            runner: macos-13
           - target: aarch64-apple-darwin/clang
             architecture: aarch64
             runner: macos-14
@@ -106,15 +102,10 @@ jobs:
           ./PCbuild/build.bat --experimental-jit ${{ matrix.debug && '-d' || '' }} -p ${{ matrix.architecture }}
           ./PCbuild/rt.bat ${{ matrix.debug && '-d' || '' }} -p ${{ matrix.architecture }} -q --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
-        # The `find` line is required as a result of https://github.com/actions/runner-images/issues/9966.
-        # This is a bug in the macOS runner image where the pre-installed Python is installed in the same
-        # directory as the Homebrew Python, which causes the build to fail for macos-13. This line removes
-        # the symlink to the pre-installed Python so that the Homebrew Python is used instead.
       - name: macOS
         if: runner.os == 'macOS'
         run: |
           brew update
-          find /usr/local/bin -lname '*/Library/Frameworks/Python.framework/*' -delete
           brew install llvm@${{ matrix.llvm }}
           export SDKROOT="$(xcrun --show-sdk-path)"
           # Set MACOSX_DEPLOYMENT_TARGET and -Werror=unguarded-availability to

.github/workflows/reusable-macos.yml

@@ -60,15 +60,15 @@ jobs:
           --prefix=/opt/python-dev \
           --with-openssl="$(brew --prefix openssl@3.0)"
     - name: Build CPython
-      if : ${{ inputs.free-threading || inputs.os != 'macos-13' }}
+      if : ${{ inputs.free-threading }}
       run: gmake -j8
     - name: Build CPython for compiler warning check
-      if : ${{ !inputs.free-threading && inputs.os == 'macos-13' }}
+      if : ${{ !inputs.free-threading }}
       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' }}
+      if : ${{ !inputs.free-threading }}
       run: >-
         python3 Tools/build/check_warnings.py
         --compiler-output-file-path=compiler_output_macos.txt

.github/workflows/tail-call.yml

@@ -39,7 +39,6 @@ jobs:
 #          - 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
           - aarch64-unknown-linux-gnu/gcc
@@ -56,9 +55,6 @@ jobs:
 #          - target: aarch64-pc-windows-msvc/msvc
 #            architecture: ARM64
 #            runner: windows-latest
-          - target: x86_64-apple-darwin/clang
-            architecture: x86_64
-            runner: macos-13
           - target: aarch64-apple-darwin/clang
             architecture: aarch64
             runner: macos-14
@@ -101,17 +97,12 @@ jobs:
           set LLVMInstallDir=C:\Program Files\LLVM
           ./PCbuild/build.bat --tail-call-interp -p ${{ matrix.architecture }}
 
-        # The `find` line is required as a result of https://github.com/actions/runner-images/issues/9966.
-        # This is a bug in the macOS runner image where the pre-installed Python is installed in the same
-        # directory as the Homebrew Python, which causes the build to fail for macos-13. This line removes
-        # the symlink to the pre-installed Python so that the Homebrew Python is used instead.
         # Note: when a new LLVM is released, the homebrew installation directory changes, so the builds will fail.
         # We either need to upgrade LLVM or change the directory being pointed to.
       - name: Native macOS (release)
         if: runner.os == 'macOS'
         run: |
           brew update
-          find /usr/local/bin -lname '*/Library/Frameworks/Python.framework/*' -delete
           brew install llvm@${{ matrix.llvm }}
           export SDKROOT="$(xcrun --show-sdk-path)"
           export PATH="/usr/local/opt/llvm/bin:$PATH"