diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c45adab284..4342651e43 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,663 +10,663 @@ on:
       - v*
 
 jobs:
-  # This is the "main" test suite, which tests a large number of different
-  # versions of default compilers and Python versions in GitHub Actions.
-  standard:
-    strategy:
-      fail-fast: false
-      matrix:
-        runs-on: [ubuntu-latest, windows-latest, macos-latest]
-        python:
-        - 2.7
-        - 3.5
-        - 3.6
-        - 3.9
-        - 3.10-dev
-        - pypy2
-        - pypy3
-
-        # Items in here will either be added to the build matrix (if not
-        # present), or add new keys to an existing matrix element if all the
-        # existing keys match.
-        #
-        # We support three optional keys: args (both build), args1 (first
-        # build), and args2 (second build).
-        include:
-          # Just add a key
-          - runs-on: ubuntu-latest
-            python: 3.6
-            args: >
-              -DPYBIND11_FINDPYTHON=ON
-          - runs-on: windows-latest
-            python: 3.6
-            args: >
-              -DPYBIND11_FINDPYTHON=ON
-
-        # These items will be removed from the build matrix, keys must match.
-        exclude:
-            # Currently 32bit only, and we build 64bit
-          - runs-on: windows-latest
-            python: pypy2
-          - runs-on: windows-latest
-            python: pypy3
-
-          # TODO: PyPy2 7.3.3 segfaults, while 7.3.2 was fine.
-          - runs-on: ubuntu-latest
-            python: pypy2
-
-    name: "🐍 ${{ matrix.python }} • ${{ matrix.runs-on }} • x64 ${{ matrix.args }}"
-    runs-on: ${{ matrix.runs-on }}
-
-    steps:
-    - uses: actions/checkout@v2
-
-    - name: Setup Python ${{ matrix.python }}
-      uses: actions/setup-python@v2
-      with:
-        python-version: ${{ matrix.python }}
-
-    - name: Setup Boost (Windows / Linux latest)
-      shell: bash
-      run: echo "BOOST_ROOT=$BOOST_ROOT_1_72_0" >> $GITHUB_ENV
-
-    - name: Update CMake
-      uses: jwlawson/actions-setup-cmake@v1.5
-
-    - name: Cache wheels
-      if: runner.os == 'macOS'
-      uses: actions/cache@v2
-      with:
-        # This path is specific to macOS - we really only need it for PyPy NumPy wheels
-        # See https://github.com/actions/cache/blob/master/examples.md#python---pip
-        # for ways to do this more generally
-        path: ~/Library/Caches/pip
-        # Look to see if there is a cache hit for the corresponding requirements file
-        key: ${{ runner.os }}-pip-${{ matrix.python }}-x64-${{ hashFiles('tests/requirements.txt') }}
-
-    - name: Prepare env
-      run: python -m pip install -r tests/requirements.txt --prefer-binary
-
-    - name: Setup annotations on Linux
-      if: runner.os == 'Linux'
-      run: python -m pip install pytest-github-actions-annotate-failures
-
-    # First build - C++11 mode and inplace
-    - name: Configure C++11 ${{ matrix.args }}
-      run: >
-        cmake -S . -B .
-        -DPYBIND11_WERROR=ON
-        -DDOWNLOAD_CATCH=ON
-        -DDOWNLOAD_EIGEN=ON
-        -DCMAKE_CXX_STANDARD=11
-        ${{ matrix.args }}
-
-    - name: Build C++11
-      run: cmake --build . -j 2
-
-    - name: Python tests C++11
-      run: cmake --build . --target pytest -j 2
-
-    - name: C++11 tests
-      # TODO: Figure out how to load the DLL on Python 3.8+
-      if: "!(runner.os == 'Windows' && (matrix.python == 3.8 || matrix.python == 3.9 || matrix.python == '3.10-dev'))"
-      run: cmake --build .  --target cpptest -j 2
-
-    - name: Interface test C++11
-      run: cmake --build . --target test_cmake_build
-
-    - name: Clean directory
-      run: git clean -fdx
-
-    # Second build - C++17 mode and in a build directory
-    - name: Configure ${{ matrix.args2 }}
-      run: >
-        cmake -S . -B build2
-        -DPYBIND11_WERROR=ON
-        -DDOWNLOAD_CATCH=ON
-        -DDOWNLOAD_EIGEN=ON
-        -DCMAKE_CXX_STANDARD=17
-        ${{ matrix.args }}
-        ${{ matrix.args2 }}
-
-    - name: Build
-      run: cmake --build build2 -j 2
-
-    - name: Python tests
-      run: cmake --build build2 --target pytest
-
-    - name: C++ tests
-      # TODO: Figure out how to load the DLL on Python 3.8+
-      if: "!(runner.os == 'Windows' && (matrix.python == 3.8 || matrix.python == 3.9 || matrix.python == '3.10-dev'))"
-      run: cmake --build build2 --target cpptest
-
-    - name: Interface test
-      run: cmake --build build2 --target test_cmake_build
-
-    # Eventually Microsoft might have an action for setting up
-    # MSVC, but for now, this action works:
-    - name: Prepare compiler environment for Windows 🐍 2.7
-      if: matrix.python == 2.7 && runner.os == 'Windows'
-      uses: ilammy/msvc-dev-cmd@v1
-      with:
-        arch: x64
-
-    # This makes two environment variables available in the following step(s)
-    - name: Set Windows 🐍 2.7 environment variables
-      if: matrix.python == 2.7 && runner.os == 'Windows'
-      shell: bash
-      run: |
-        echo "DISTUTILS_USE_SDK=1" >> $GITHUB_ENV
-        echo "MSSdk=1" >> $GITHUB_ENV
-
-    # This makes sure the setup_helpers module can build packages using
-    # setuptools
-    - name: Setuptools helpers test
-      run: pytest tests/extra_setuptools
-
-
-  # Testing on clang using the excellent silkeh clang docker images
-  clang:
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        clang:
-          - 3.6
-          - 3.7
-          - 3.9
-          - 7
-          - 9
-          - dev
-        std:
-          - 11
-        include:
-          - clang: 5
-            std: 14
-          - clang: 10
-            std: 20
-          - clang: 10
-            std: 17
-
-    name: "🐍 3 • Clang ${{ matrix.clang }} • C++${{ matrix.std }} • x64"
-    container: "silkeh/clang:${{ matrix.clang }}"
-
-    steps:
-    - uses: actions/checkout@v2
-
-    - name: Add wget and python3
-      run: apt-get update && apt-get install -y python3-dev python3-numpy python3-pytest libeigen3-dev
-
-    - name: Configure
-      shell: bash
-      run: >
-        cmake -S . -B build
-        -DPYBIND11_WERROR=ON
-        -DDOWNLOAD_CATCH=ON
-        -DCMAKE_CXX_STANDARD=${{ matrix.std }}
-        -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)")
-
-    - name: Build
-      run: cmake --build build -j 2
-
-    - name: Python tests
-      run: cmake --build build --target pytest
-
-    - name: C++ tests
-      run: cmake --build build --target cpptest
-
-    - name: Interface test
-      run: cmake --build build --target test_cmake_build
-
-
-  # Testing NVCC; forces sources to behave like .cu files
-  cuda:
-    runs-on: ubuntu-latest
-    name: "🐍 3.8 • CUDA 11 • Ubuntu 20.04"
-    container: nvidia/cuda:11.0-devel-ubuntu20.04
-
-    steps:
-    - uses: actions/checkout@v2
-
-    # tzdata will try to ask for the timezone, so set the DEBIAN_FRONTEND
-    - name: Install 🐍 3
-      run: apt-get update && DEBIAN_FRONTEND="noninteractive" apt-get install -y cmake git python3-dev python3-pytest python3-numpy
-
-    - name: Configure
-      run: cmake -S . -B build -DPYBIND11_CUDA_TESTS=ON -DPYBIND11_WERROR=ON -DDOWNLOAD_CATCH=ON
-
-    - name: Build
-      run: cmake --build build -j2 --verbose
-
-    - name: Python tests
-      run: cmake --build build --target pytest
-
-
-# TODO: Internal compiler error - report to NVidia
-#  # Testing CentOS 8 + PGI compilers
-#  centos-nvhpc8:
-#    runs-on: ubuntu-latest
-#    name: "🐍 3 • CentOS8 / PGI 20.11 • x64"
-#    container: centos:8
-#
-#    steps:
-#    - uses: actions/checkout@v2
-#
-#    - name: Add Python 3 and a few requirements
-#      run: yum update -y && yum install -y git python3-devel python3-numpy python3-pytest make environment-modules
-#
-#    - name: Install CMake with pip
-#      run: |
-#        python3 -m pip install --upgrade pip
-#        python3 -m pip install cmake --prefer-binary
-#
-#    - name: Install NVidia HPC SDK
-#      run: >
-#        yum -y install
-#        https://developer.download.nvidia.com/hpc-sdk/20.11/nvhpc-20-11-20.11-1.x86_64.rpm
-#        https://developer.download.nvidia.com/hpc-sdk/20.11/nvhpc-2020-20.11-1.x86_64.rpm
-#
-#    - name: Configure
-#      shell: bash
-#      run: |
-#        source /etc/profile.d/modules.sh
-#        module load /opt/nvidia/hpc_sdk/modulefiles/nvhpc/20.11
-#        cmake -S . -B build -DDOWNLOAD_CATCH=ON -DCMAKE_CXX_STANDARD=14 -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)")
-#
-#    - name: Build
-#      run: cmake --build build -j 2 --verbose
-#
-#    - name: Python tests
-#      run: cmake --build build --target pytest
-#
-#    - name: C++ tests
-#      run: cmake --build build --target cpptest
-#
-#    - name: Interface test
-#      run: cmake --build build --target test_cmake_build
-
-
-  # Testing on CentOS 7 + PGI compilers, which seems to require more workarounds
-  centos-nvhpc7:
-    runs-on: ubuntu-latest
-    name: "🐍 3 • CentOS7 / PGI 20.9 • x64"
-    container: centos:7
-
-    steps:
-    - uses: actions/checkout@v2
-
-    - name: Add Python 3 and a few requirements
-      run: yum update -y && yum install -y epel-release && yum install -y git python3-devel make environment-modules cmake3
-
-    - name: Install NVidia HPC SDK
-      run:  yum -y install https://developer.download.nvidia.com/hpc-sdk/20.9/nvhpc-20-9-20.9-1.x86_64.rpm https://developer.download.nvidia.com/hpc-sdk/20.9/nvhpc-2020-20.9-1.x86_64.rpm
-
-    # On CentOS 7, we have to filter a few tests (compiler internal error)
-    # and allow deeper templete recursion (not needed on CentOS 8 with a newer
-    # standard library). On some systems, you many need further workarounds:
-    # https://github.com/pybind/pybind11/pull/2475
-    - name: Configure
-      shell: bash
-      run: |
-        source /etc/profile.d/modules.sh
-        module load /opt/nvidia/hpc_sdk/modulefiles/nvhpc/20.9
-        cmake3 -S . -B build -DDOWNLOAD_CATCH=ON \
-                            -DCMAKE_CXX_STANDARD=11 \
-                            -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)") \
-                            -DCMAKE_CXX_FLAGS="-Wc,--pending_instantiations=0" \
-                            -DPYBIND11_TEST_FILTER="test_smart_ptr.cpp;test_virtual_functions.cpp"
-
-    # Building before installing Pip should produce a warning but not an error
-    - name: Build
-      run: cmake3 --build build -j 2 --verbose
-
-    - name: Install CMake with pip
-      run: |
-        python3 -m pip install --upgrade pip
-        python3 -m pip install pytest
-
-    - name: Python tests
-      run: cmake3 --build build --target pytest
-
-    - name: C++ tests
-      run: cmake3 --build build --target cpptest
-
-    - name: Interface test
-      run: cmake3 --build build --target test_cmake_build
-
-  # Testing on GCC using the GCC docker images (only recent images supported)
-  gcc:
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        gcc:
-          - 7
-          - latest
-        std:
-          - 11
-        include:
-          - gcc: 10
-            std: 20
-
-    name: "🐍 3 • GCC ${{ matrix.gcc }} • C++${{ matrix.std }}• x64"
-    container: "gcc:${{ matrix.gcc }}"
-
-    steps:
-    - uses: actions/checkout@v1
-
-    - name: Add Python 3
-      run: apt-get update; apt-get install -y python3-dev python3-numpy python3-pytest python3-pip libeigen3-dev
-
-    - name: Update pip
-      run: python3 -m pip install --upgrade pip
-
-    - name: Setup CMake 3.18
-      uses: jwlawson/actions-setup-cmake@v1.5
-      with:
-        cmake-version: 3.18
-
-    - name: Configure
-      shell: bash
-      run: >
-        cmake -S . -B build
-        -DPYBIND11_WERROR=ON
-        -DDOWNLOAD_CATCH=ON
-        -DCMAKE_CXX_STANDARD=${{ matrix.std }}
-        -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)")
-
-    - name: Build
-      run: cmake --build build -j 2
-
-    - name: Python tests
-      run: cmake --build build --target pytest
-
-    - name: C++ tests
-      run: cmake --build build --target cpptest
-
-    - name: Interface test
-      run: cmake --build build --target test_cmake_build
-
-
-  # Testing on CentOS (manylinux uses a centos base, and this is an easy way
-  # to get GCC 4.8, which is the manylinux1 compiler).
-  centos:
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        centos:
-          - 7  # GCC 4.8
-          - 8
-
-    name: "🐍 3 • CentOS ${{ matrix.centos }} • x64"
-    container: "centos:${{ matrix.centos }}"
-
-    steps:
-    - uses: actions/checkout@v2
-
-    - name: Add Python 3
-      run: yum update -y && yum install -y python3-devel gcc-c++ make git
-
-    - name: Update pip
-      run: python3 -m pip install --upgrade pip
-
-    - name: Install dependencies
-      run: python3 -m pip install cmake -r tests/requirements.txt --prefer-binary
-
-    - name: Configure
-      shell: bash
-      run: >
-        cmake -S . -B build
-        -DPYBIND11_WERROR=ON
-        -DDOWNLOAD_CATCH=ON
-        -DDOWNLOAD_EIGEN=ON
-        -DCMAKE_CXX_STANDARD=11
-        -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)")
-
-    - name: Build
-      run: cmake --build build -j 2
-
-    - name: Python tests
-      run: cmake --build build --target pytest
-
-    - name: C++ tests
-      run: cmake --build build --target cpptest
-
-    - name: Interface test
-      run: cmake --build build --target test_cmake_build
-
-
-  # This tests an "install" with the CMake tools
-  install-classic:
-    name: "🐍 3.5 • Debian • x86 •  Install"
-    runs-on: ubuntu-latest
-    container: i386/debian:stretch
-
-    steps:
-    - uses: actions/checkout@v1
-
-    - name: Install requirements
-      run: |
-        apt-get update
-        apt-get install -y git make cmake g++ libeigen3-dev python3-dev python3-pip
-        pip3 install "pytest==3.1.*"
-
-    - name: Configure for install
-      run: >
-        cmake .
-        -DPYBIND11_INSTALL=1 -DPYBIND11_TEST=0
-        -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)")
-
-    - name: Make and install
-      run: make install
-
-    - name: Copy tests to new directory
-      run: cp -a tests /pybind11-tests
-
-    - name: Make a new test directory
-      run: mkdir /build-tests
-
-    - name: Configure tests
-      run: >
-        cmake ../pybind11-tests
-        -DDOWNLOAD_CATCH=ON
-        -DPYBIND11_WERROR=ON
-        -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)")
-      working-directory: /build-tests
-
-    - name: Run tests
-      run: make pytest -j 2
-      working-directory: /build-tests
-
-
-  # This verifies that the documentation is not horribly broken, and does a
-  # basic sanity check on the SDist.
-  doxygen:
-    name: "Documentation build test"
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v2
-
-    - uses: actions/setup-python@v2
-
-    - name: Install Doxygen
-      run: sudo apt-get install -y doxygen librsvg2-bin # Changed to rsvg-convert in 20.04
-
-    - name: Install docs & setup requirements
-      run: python3 -m pip install -r docs/requirements.txt
-
-    - name: Build docs
-      run: python3 -m sphinx -W -b html docs docs/.build
-
-    - name: Make SDist
-      run: python3 setup.py sdist
-
-    - run: git status --ignored
-
-    - name: Check local include dir
-      run: >
-        ls pybind11;
-        python3 -c "import pybind11, pathlib; assert (a := pybind11.get_include()) == (b := str(pathlib.Path('include').resolve())), f'{a} != {b}'"
-
-    - name: Compare Dists (headers only)
-      working-directory: include
-      run: |
-        python3 -m pip install --user -U ../dist/*
-        installed=$(python3 -c "import pybind11; print(pybind11.get_include() + '/pybind11')")
-        diff -rq $installed ./pybind11
-
-  win32:
-    strategy:
-      fail-fast: false
-      matrix:
-        python:
-        - 3.5
-        - 3.6
-        - 3.7
-        - 3.8
-        - 3.9
-        - pypy3
-        # TODO: fix hang on pypy2
-
-        include:
-          - python: 3.9
-            args: -DCMAKE_CXX_STANDARD=20 -DDOWNLOAD_EIGEN=OFF
-          - python: 3.8
-            args: -DCMAKE_CXX_STANDARD=17
-
-    name: "🐍 ${{ matrix.python }} • MSVC 2019 • x86 ${{ matrix.args }}"
-    runs-on: windows-latest
-
-    steps:
-    - uses: actions/checkout@v2
-
-    - name: Setup Python ${{ matrix.python }}
-      uses: actions/setup-python@v2
-      with:
-        python-version: ${{ matrix.python }}
-        architecture: x86
-
-    - name: Update CMake
-      uses: jwlawson/actions-setup-cmake@v1.5
-
-    - name: Prepare MSVC
-      uses: ilammy/msvc-dev-cmd@v1
-      with:
-        arch: x86
-
-    - name: Prepare env
-      run: python -m pip install -r tests/requirements.txt --prefer-binary
-
-    # First build - C++11 mode and inplace
-    - name: Configure ${{ matrix.args }}
-      run: >
-        cmake -S . -B build
-        -G "Visual Studio 16 2019" -A Win32
-        -DPYBIND11_WERROR=ON
-        -DDOWNLOAD_CATCH=ON
-        -DDOWNLOAD_EIGEN=ON
-        ${{ matrix.args }}
-    - name: Build C++11
-      run: cmake --build build -j 2
-
-    - name: Run tests
-      run: cmake --build build -t pytest
-
-  win32-msvc2015:
-    name: "🐍 ${{ matrix.python }} • MSVC 2015 • x64"
-    runs-on: windows-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        python:
-          - 2.7
-          - 3.6
-          - 3.7
-          # todo: check/cpptest does not support 3.8+ yet
-
-    steps:
-    - uses: actions/checkout@v2
-
-    - name: Setup 🐍 ${{ matrix.python }}
-      uses: actions/setup-python@v2
-      with:
-        python-version: ${{ matrix.python }}
-
-    - name: Update CMake
-      uses: jwlawson/actions-setup-cmake@v1.5
-
-    - name: Prepare MSVC
-      uses: ilammy/msvc-dev-cmd@v1
-      with:
-        toolset: 14.0
-
-    - name: Prepare env
-      run: python -m pip install -r tests/requirements.txt --prefer-binary
-
-    # First build - C++11 mode and inplace
-    - name: Configure
-      run: >
-        cmake -S . -B build
-        -G "Visual Studio 14 2015" -A x64
-        -DPYBIND11_WERROR=ON
-        -DDOWNLOAD_CATCH=ON
-        -DDOWNLOAD_EIGEN=ON
-
-    - name: Build C++14
-      run: cmake --build build -j 2
-
-    - name: Run all checks
-      run: cmake --build build -t check
-
-
-  win32-msvc2017:
-    name: "🐍 ${{ matrix.python }} • MSVC 2017 • x64"
-    runs-on: windows-2016
-    strategy:
-      fail-fast: false
-      matrix:
-        python:
-          - 2.7
-          - 3.5
-          - 3.7
-        std:
-          - 14
-
-        include:
-          - python: 2.7
-            std: 17
-            args: >
-              -DCMAKE_CXX_FLAGS="/permissive- /EHsc /GR"
-
-    steps:
-    - uses: actions/checkout@v2
-
-    - name: Setup 🐍 ${{ matrix.python }}
-      uses: actions/setup-python@v2
-      with:
-        python-version: ${{ matrix.python }}
-
-    - name: Update CMake
-      uses: jwlawson/actions-setup-cmake@v1.5
-
-    - name: Prepare env
-      run: python -m pip install -r tests/requirements.txt --prefer-binary
-
-    # First build - C++11 mode and inplace
-    - name: Configure
-      run: >
-        cmake -S . -B build
-        -G "Visual Studio 15 2017" -A x64
-        -DPYBIND11_WERROR=ON
-        -DDOWNLOAD_CATCH=ON
-        -DDOWNLOAD_EIGEN=ON
-        -DCMAKE_CXX_STANDARD=${{ matrix.std }}
-        ${{ matrix.args }}
-
-    - name: Build ${{ matrix.std }}
-      run: cmake --build build -j 2
-
-    - name: Run all checks
-      run: cmake --build build -t check
+#   # This is the "main" test suite, which tests a large number of different
+#   # versions of default compilers and Python versions in GitHub Actions.
+#   standard:
+#     strategy:
+#       fail-fast: false
+#       matrix:
+#         runs-on: [ubuntu-latest, windows-latest, macos-latest]
+#         python:
+#         - 2.7
+#         - 3.5
+#         - 3.6
+#         - 3.9
+#         - 3.10-dev
+#         - pypy2
+#         - pypy3
+
+#         # Items in here will either be added to the build matrix (if not
+#         # present), or add new keys to an existing matrix element if all the
+#         # existing keys match.
+#         #
+#         # We support three optional keys: args (both build), args1 (first
+#         # build), and args2 (second build).
+#         include:
+#           # Just add a key
+#           - runs-on: ubuntu-latest
+#             python: 3.6
+#             args: >
+#               -DPYBIND11_FINDPYTHON=ON
+#           - runs-on: windows-latest
+#             python: 3.6
+#             args: >
+#               -DPYBIND11_FINDPYTHON=ON
+
+#         # These items will be removed from the build matrix, keys must match.
+#         exclude:
+#             # Currently 32bit only, and we build 64bit
+#           - runs-on: windows-latest
+#             python: pypy2
+#           - runs-on: windows-latest
+#             python: pypy3
+
+#           # TODO: PyPy2 7.3.3 segfaults, while 7.3.2 was fine.
+#           - runs-on: ubuntu-latest
+#             python: pypy2
+
+#     name: "🐍 ${{ matrix.python }} • ${{ matrix.runs-on }} • x64 ${{ matrix.args }}"
+#     runs-on: ${{ matrix.runs-on }}
+
+#     steps:
+#     - uses: actions/checkout@v2
+
+#     - name: Setup Python ${{ matrix.python }}
+#       uses: actions/setup-python@v2
+#       with:
+#         python-version: ${{ matrix.python }}
+
+#     - name: Setup Boost (Windows / Linux latest)
+#       shell: bash
+#       run: echo "BOOST_ROOT=$BOOST_ROOT_1_72_0" >> $GITHUB_ENV
+
+#     - name: Update CMake
+#       uses: jwlawson/actions-setup-cmake@v1.5
+
+#     - name: Cache wheels
+#       if: runner.os == 'macOS'
+#       uses: actions/cache@v2
+#       with:
+#         # This path is specific to macOS - we really only need it for PyPy NumPy wheels
+#         # See https://github.com/actions/cache/blob/master/examples.md#python---pip
+#         # for ways to do this more generally
+#         path: ~/Library/Caches/pip
+#         # Look to see if there is a cache hit for the corresponding requirements file
+#         key: ${{ runner.os }}-pip-${{ matrix.python }}-x64-${{ hashFiles('tests/requirements.txt') }}
+
+#     - name: Prepare env
+#       run: python -m pip install -r tests/requirements.txt --prefer-binary
+
+#     - name: Setup annotations on Linux
+#       if: runner.os == 'Linux'
+#       run: python -m pip install pytest-github-actions-annotate-failures
+
+#     # First build - C++11 mode and inplace
+#     - name: Configure C++11 ${{ matrix.args }}
+#       run: >
+#         cmake -S . -B .
+#         -DPYBIND11_WERROR=ON
+#         -DDOWNLOAD_CATCH=ON
+#         -DDOWNLOAD_EIGEN=ON
+#         -DCMAKE_CXX_STANDARD=11
+#         ${{ matrix.args }}
+
+#     - name: Build C++11
+#       run: cmake --build . -j 2
+
+#     - name: Python tests C++11
+#       run: cmake --build . --target pytest -j 2
+
+#     - name: C++11 tests
+#       # TODO: Figure out how to load the DLL on Python 3.8+
+#       if: "!(runner.os == 'Windows' && (matrix.python == 3.8 || matrix.python == 3.9 || matrix.python == '3.10-dev'))"
+#       run: cmake --build .  --target cpptest -j 2
+
+#     - name: Interface test C++11
+#       run: cmake --build . --target test_cmake_build
+
+#     - name: Clean directory
+#       run: git clean -fdx
+
+#     # Second build - C++17 mode and in a build directory
+#     - name: Configure ${{ matrix.args2 }}
+#       run: >
+#         cmake -S . -B build2
+#         -DPYBIND11_WERROR=ON
+#         -DDOWNLOAD_CATCH=ON
+#         -DDOWNLOAD_EIGEN=ON
+#         -DCMAKE_CXX_STANDARD=17
+#         ${{ matrix.args }}
+#         ${{ matrix.args2 }}
+
+#     - name: Build
+#       run: cmake --build build2 -j 2
+
+#     - name: Python tests
+#       run: cmake --build build2 --target pytest
+
+#     - name: C++ tests
+#       # TODO: Figure out how to load the DLL on Python 3.8+
+#       if: "!(runner.os == 'Windows' && (matrix.python == 3.8 || matrix.python == 3.9 || matrix.python == '3.10-dev'))"
+#       run: cmake --build build2 --target cpptest
+
+#     - name: Interface test
+#       run: cmake --build build2 --target test_cmake_build
+
+#     # Eventually Microsoft might have an action for setting up
+#     # MSVC, but for now, this action works:
+#     - name: Prepare compiler environment for Windows 🐍 2.7
+#       if: matrix.python == 2.7 && runner.os == 'Windows'
+#       uses: ilammy/msvc-dev-cmd@v1
+#       with:
+#         arch: x64
+
+#     # This makes two environment variables available in the following step(s)
+#     - name: Set Windows 🐍 2.7 environment variables
+#       if: matrix.python == 2.7 && runner.os == 'Windows'
+#       shell: bash
+#       run: |
+#         echo "DISTUTILS_USE_SDK=1" >> $GITHUB_ENV
+#         echo "MSSdk=1" >> $GITHUB_ENV
+
+#     # This makes sure the setup_helpers module can build packages using
+#     # setuptools
+#     - name: Setuptools helpers test
+#       run: pytest tests/extra_setuptools
+
+
+#   # Testing on clang using the excellent silkeh clang docker images
+#   clang:
+#     runs-on: ubuntu-latest
+#     strategy:
+#       fail-fast: false
+#       matrix:
+#         clang:
+#           - 3.6
+#           - 3.7
+#           - 3.9
+#           - 7
+#           - 9
+#           - dev
+#         std:
+#           - 11
+#         include:
+#           - clang: 5
+#             std: 14
+#           - clang: 10
+#             std: 20
+#           - clang: 10
+#             std: 17
+
+#     name: "🐍 3 • Clang ${{ matrix.clang }} • C++${{ matrix.std }} • x64"
+#     container: "silkeh/clang:${{ matrix.clang }}"
+
+#     steps:
+#     - uses: actions/checkout@v2
+
+#     - name: Add wget and python3
+#       run: apt-get update && apt-get install -y python3-dev python3-numpy python3-pytest libeigen3-dev
+
+#     - name: Configure
+#       shell: bash
+#       run: >
+#         cmake -S . -B build
+#         -DPYBIND11_WERROR=ON
+#         -DDOWNLOAD_CATCH=ON
+#         -DCMAKE_CXX_STANDARD=${{ matrix.std }}
+#         -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)")
+
+#     - name: Build
+#       run: cmake --build build -j 2
+
+#     - name: Python tests
+#       run: cmake --build build --target pytest
+
+#     - name: C++ tests
+#       run: cmake --build build --target cpptest
+
+#     - name: Interface test
+#       run: cmake --build build --target test_cmake_build
+
+
+#   # Testing NVCC; forces sources to behave like .cu files
+#   cuda:
+#     runs-on: ubuntu-latest
+#     name: "🐍 3.8 • CUDA 11 • Ubuntu 20.04"
+#     container: nvidia/cuda:11.0-devel-ubuntu20.04
+
+#     steps:
+#     - uses: actions/checkout@v2
+
+#     # tzdata will try to ask for the timezone, so set the DEBIAN_FRONTEND
+#     - name: Install 🐍 3
+#       run: apt-get update && DEBIAN_FRONTEND="noninteractive" apt-get install -y cmake git python3-dev python3-pytest python3-numpy
+
+#     - name: Configure
+#       run: cmake -S . -B build -DPYBIND11_CUDA_TESTS=ON -DPYBIND11_WERROR=ON -DDOWNLOAD_CATCH=ON
+
+#     - name: Build
+#       run: cmake --build build -j2 --verbose
+
+#     - name: Python tests
+#       run: cmake --build build --target pytest
+
+
+# # TODO: Internal compiler error - report to NVidia
+# #  # Testing CentOS 8 + PGI compilers
+# #  centos-nvhpc8:
+# #    runs-on: ubuntu-latest
+# #    name: "🐍 3 • CentOS8 / PGI 20.11 • x64"
+# #    container: centos:8
+# #
+# #    steps:
+# #    - uses: actions/checkout@v2
+# #
+# #    - name: Add Python 3 and a few requirements
+# #      run: yum update -y && yum install -y git python3-devel python3-numpy python3-pytest make environment-modules
+# #
+# #    - name: Install CMake with pip
+# #      run: |
+# #        python3 -m pip install --upgrade pip
+# #        python3 -m pip install cmake --prefer-binary
+# #
+# #    - name: Install NVidia HPC SDK
+# #      run: >
+# #        yum -y install
+# #        https://developer.download.nvidia.com/hpc-sdk/20.11/nvhpc-20-11-20.11-1.x86_64.rpm
+# #        https://developer.download.nvidia.com/hpc-sdk/20.11/nvhpc-2020-20.11-1.x86_64.rpm
+# #
+# #    - name: Configure
+# #      shell: bash
+# #      run: |
+# #        source /etc/profile.d/modules.sh
+# #        module load /opt/nvidia/hpc_sdk/modulefiles/nvhpc/20.11
+# #        cmake -S . -B build -DDOWNLOAD_CATCH=ON -DCMAKE_CXX_STANDARD=14 -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)")
+# #
+# #    - name: Build
+# #      run: cmake --build build -j 2 --verbose
+# #
+# #    - name: Python tests
+# #      run: cmake --build build --target pytest
+# #
+# #    - name: C++ tests
+# #      run: cmake --build build --target cpptest
+# #
+# #    - name: Interface test
+# #      run: cmake --build build --target test_cmake_build
+
+
+#   # Testing on CentOS 7 + PGI compilers, which seems to require more workarounds
+#   centos-nvhpc7:
+#     runs-on: ubuntu-latest
+#     name: "🐍 3 • CentOS7 / PGI 20.9 • x64"
+#     container: centos:7
+
+#     steps:
+#     - uses: actions/checkout@v2
+
+#     - name: Add Python 3 and a few requirements
+#       run: yum update -y && yum install -y epel-release && yum install -y git python3-devel make environment-modules cmake3
+
+#     - name: Install NVidia HPC SDK
+#       run:  yum -y install https://developer.download.nvidia.com/hpc-sdk/20.9/nvhpc-20-9-20.9-1.x86_64.rpm https://developer.download.nvidia.com/hpc-sdk/20.9/nvhpc-2020-20.9-1.x86_64.rpm
+
+#     # On CentOS 7, we have to filter a few tests (compiler internal error)
+#     # and allow deeper templete recursion (not needed on CentOS 8 with a newer
+#     # standard library). On some systems, you many need further workarounds:
+#     # https://github.com/pybind/pybind11/pull/2475
+#     - name: Configure
+#       shell: bash
+#       run: |
+#         source /etc/profile.d/modules.sh
+#         module load /opt/nvidia/hpc_sdk/modulefiles/nvhpc/20.9
+#         cmake3 -S . -B build -DDOWNLOAD_CATCH=ON \
+#                             -DCMAKE_CXX_STANDARD=11 \
+#                             -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)") \
+#                             -DCMAKE_CXX_FLAGS="-Wc,--pending_instantiations=0" \
+#                             -DPYBIND11_TEST_FILTER="test_smart_ptr.cpp;test_virtual_functions.cpp"
+
+#     # Building before installing Pip should produce a warning but not an error
+#     - name: Build
+#       run: cmake3 --build build -j 2 --verbose
+
+#     - name: Install CMake with pip
+#       run: |
+#         python3 -m pip install --upgrade pip
+#         python3 -m pip install pytest
+
+#     - name: Python tests
+#       run: cmake3 --build build --target pytest
+
+#     - name: C++ tests
+#       run: cmake3 --build build --target cpptest
+
+#     - name: Interface test
+#       run: cmake3 --build build --target test_cmake_build
+
+#   # Testing on GCC using the GCC docker images (only recent images supported)
+#   gcc:
+#     runs-on: ubuntu-latest
+#     strategy:
+#       fail-fast: false
+#       matrix:
+#         gcc:
+#           - 7
+#           - latest
+#         std:
+#           - 11
+#         include:
+#           - gcc: 10
+#             std: 20
+
+#     name: "🐍 3 • GCC ${{ matrix.gcc }} • C++${{ matrix.std }}• x64"
+#     container: "gcc:${{ matrix.gcc }}"
+
+#     steps:
+#     - uses: actions/checkout@v1
+
+#     - name: Add Python 3
+#       run: apt-get update; apt-get install -y python3-dev python3-numpy python3-pytest python3-pip libeigen3-dev
+
+#     - name: Update pip
+#       run: python3 -m pip install --upgrade pip
+
+#     - name: Setup CMake 3.18
+#       uses: jwlawson/actions-setup-cmake@v1.5
+#       with:
+#         cmake-version: 3.18
+
+#     - name: Configure
+#       shell: bash
+#       run: >
+#         cmake -S . -B build
+#         -DPYBIND11_WERROR=ON
+#         -DDOWNLOAD_CATCH=ON
+#         -DCMAKE_CXX_STANDARD=${{ matrix.std }}
+#         -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)")
+
+#     - name: Build
+#       run: cmake --build build -j 2
+
+#     - name: Python tests
+#       run: cmake --build build --target pytest
+
+#     - name: C++ tests
+#       run: cmake --build build --target cpptest
+
+#     - name: Interface test
+#       run: cmake --build build --target test_cmake_build
+
+
+#   # Testing on CentOS (manylinux uses a centos base, and this is an easy way
+#   # to get GCC 4.8, which is the manylinux1 compiler).
+#   centos:
+#     runs-on: ubuntu-latest
+#     strategy:
+#       fail-fast: false
+#       matrix:
+#         centos:
+#           - 7  # GCC 4.8
+#           - 8
+
+#     name: "🐍 3 • CentOS ${{ matrix.centos }} • x64"
+#     container: "centos:${{ matrix.centos }}"
+
+#     steps:
+#     - uses: actions/checkout@v2
+
+#     - name: Add Python 3
+#       run: yum update -y && yum install -y python3-devel gcc-c++ make git
+
+#     - name: Update pip
+#       run: python3 -m pip install --upgrade pip
+
+#     - name: Install dependencies
+#       run: python3 -m pip install cmake -r tests/requirements.txt --prefer-binary
+
+#     - name: Configure
+#       shell: bash
+#       run: >
+#         cmake -S . -B build
+#         -DPYBIND11_WERROR=ON
+#         -DDOWNLOAD_CATCH=ON
+#         -DDOWNLOAD_EIGEN=ON
+#         -DCMAKE_CXX_STANDARD=11
+#         -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)")
+
+#     - name: Build
+#       run: cmake --build build -j 2
+
+#     - name: Python tests
+#       run: cmake --build build --target pytest
+
+#     - name: C++ tests
+#       run: cmake --build build --target cpptest
+
+#     - name: Interface test
+#       run: cmake --build build --target test_cmake_build
+
+
+#   # This tests an "install" with the CMake tools
+#   install-classic:
+#     name: "🐍 3.5 • Debian • x86 •  Install"
+#     runs-on: ubuntu-latest
+#     container: i386/debian:stretch
+
+#     steps:
+#     - uses: actions/checkout@v1
+
+#     - name: Install requirements
+#       run: |
+#         apt-get update
+#         apt-get install -y git make cmake g++ libeigen3-dev python3-dev python3-pip
+#         pip3 install "pytest==3.1.*"
+
+#     - name: Configure for install
+#       run: >
+#         cmake .
+#         -DPYBIND11_INSTALL=1 -DPYBIND11_TEST=0
+#         -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)")
+
+#     - name: Make and install
+#       run: make install
+
+#     - name: Copy tests to new directory
+#       run: cp -a tests /pybind11-tests
+
+#     - name: Make a new test directory
+#       run: mkdir /build-tests
+
+#     - name: Configure tests
+#       run: >
+#         cmake ../pybind11-tests
+#         -DDOWNLOAD_CATCH=ON
+#         -DPYBIND11_WERROR=ON
+#         -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)")
+#       working-directory: /build-tests
+
+#     - name: Run tests
+#       run: make pytest -j 2
+#       working-directory: /build-tests
+
+
+#   # This verifies that the documentation is not horribly broken, and does a
+#   # basic sanity check on the SDist.
+#   doxygen:
+#     name: "Documentation build test"
+#     runs-on: ubuntu-latest
+
+#     steps:
+#     - uses: actions/checkout@v2
+
+#     - uses: actions/setup-python@v2
+
+#     - name: Install Doxygen
+#       run: sudo apt-get install -y doxygen librsvg2-bin # Changed to rsvg-convert in 20.04
+
+#     - name: Install docs & setup requirements
+#       run: python3 -m pip install -r docs/requirements.txt
+
+#     - name: Build docs
+#       run: python3 -m sphinx -W -b html docs docs/.build
+
+#     - name: Make SDist
+#       run: python3 setup.py sdist
+
+#     - run: git status --ignored
+
+#     - name: Check local include dir
+#       run: >
+#         ls pybind11;
+#         python3 -c "import pybind11, pathlib; assert (a := pybind11.get_include()) == (b := str(pathlib.Path('include').resolve())), f'{a} != {b}'"
+
+#     - name: Compare Dists (headers only)
+#       working-directory: include
+#       run: |
+#         python3 -m pip install --user -U ../dist/*
+#         installed=$(python3 -c "import pybind11; print(pybind11.get_include() + '/pybind11')")
+#         diff -rq $installed ./pybind11
+
+#   win32:
+#     strategy:
+#       fail-fast: false
+#       matrix:
+#         python:
+#         - 3.5
+#         - 3.6
+#         - 3.7
+#         - 3.8
+#         - 3.9
+#         - pypy3
+#         # TODO: fix hang on pypy2
+
+#         include:
+#           - python: 3.9
+#             args: -DCMAKE_CXX_STANDARD=20 -DDOWNLOAD_EIGEN=OFF
+#           - python: 3.8
+#             args: -DCMAKE_CXX_STANDARD=17
+
+#     name: "🐍 ${{ matrix.python }} • MSVC 2019 • x86 ${{ matrix.args }}"
+#     runs-on: windows-latest
+
+#     steps:
+#     - uses: actions/checkout@v2
+
+#     - name: Setup Python ${{ matrix.python }}
+#       uses: actions/setup-python@v2
+#       with:
+#         python-version: ${{ matrix.python }}
+#         architecture: x86
+
+#     - name: Update CMake
+#       uses: jwlawson/actions-setup-cmake@v1.5
+
+#     - name: Prepare MSVC
+#       uses: ilammy/msvc-dev-cmd@v1
+#       with:
+#         arch: x86
+
+#     - name: Prepare env
+#       run: python -m pip install -r tests/requirements.txt --prefer-binary
+
+#     # First build - C++11 mode and inplace
+#     - name: Configure ${{ matrix.args }}
+#       run: >
+#         cmake -S . -B build
+#         -G "Visual Studio 16 2019" -A Win32
+#         -DPYBIND11_WERROR=ON
+#         -DDOWNLOAD_CATCH=ON
+#         -DDOWNLOAD_EIGEN=ON
+#         ${{ matrix.args }}
+#     - name: Build C++11
+#       run: cmake --build build -j 2
+
+#     - name: Run tests
+#       run: cmake --build build -t pytest
+
+#   win32-msvc2015:
+#     name: "🐍 ${{ matrix.python }} • MSVC 2015 • x64"
+#     runs-on: windows-latest
+#     strategy:
+#       fail-fast: false
+#       matrix:
+#         python:
+#           - 2.7
+#           - 3.6
+#           - 3.7
+#           # todo: check/cpptest does not support 3.8+ yet
+
+#     steps:
+#     - uses: actions/checkout@v2
+
+#     - name: Setup 🐍 ${{ matrix.python }}
+#       uses: actions/setup-python@v2
+#       with:
+#         python-version: ${{ matrix.python }}
+
+#     - name: Update CMake
+#       uses: jwlawson/actions-setup-cmake@v1.5
+
+#     - name: Prepare MSVC
+#       uses: ilammy/msvc-dev-cmd@v1
+#       with:
+#         toolset: 14.0
+
+#     - name: Prepare env
+#       run: python -m pip install -r tests/requirements.txt --prefer-binary
+
+#     # First build - C++11 mode and inplace
+#     - name: Configure
+#       run: >
+#         cmake -S . -B build
+#         -G "Visual Studio 14 2015" -A x64
+#         -DPYBIND11_WERROR=ON
+#         -DDOWNLOAD_CATCH=ON
+#         -DDOWNLOAD_EIGEN=ON
+
+#     - name: Build C++14
+#       run: cmake --build build -j 2
+
+#     - name: Run all checks
+#       run: cmake --build build -t check
+
+
+#   win32-msvc2017:
+#     name: "🐍 ${{ matrix.python }} • MSVC 2017 • x64"
+#     runs-on: windows-2016
+#     strategy:
+#       fail-fast: false
+#       matrix:
+#         python:
+#           - 2.7
+#           - 3.5
+#           - 3.7
+#         std:
+#           - 14
+
+#         include:
+#           - python: 2.7
+#             std: 17
+#             args: >
+#               -DCMAKE_CXX_FLAGS="/permissive- /EHsc /GR"
+
+#     steps:
+#     - uses: actions/checkout@v2
+
+#     - name: Setup 🐍 ${{ matrix.python }}
+#       uses: actions/setup-python@v2
+#       with:
+#         python-version: ${{ matrix.python }}
+
+#     - name: Update CMake
+#       uses: jwlawson/actions-setup-cmake@v1.5
+
+#     - name: Prepare env
+#       run: python -m pip install -r tests/requirements.txt --prefer-binary
+
+#     # First build - C++11 mode and inplace
+#     - name: Configure
+#       run: >
+#         cmake -S . -B build
+#         -G "Visual Studio 15 2017" -A x64
+#         -DPYBIND11_WERROR=ON
+#         -DDOWNLOAD_CATCH=ON
+#         -DDOWNLOAD_EIGEN=ON
+#         -DCMAKE_CXX_STANDARD=${{ matrix.std }}
+#         ${{ matrix.args }}
+
+#     - name: Build ${{ matrix.std }}
+#       run: cmake --build build -j 2
+
+#     - name: Run all checks
+#       run: cmake --build build -t check
diff --git a/.github/workflows/configure.yml b/.github/workflows/configure.yml
deleted file mode 100644
index 5eb6a9717f..0000000000
--- a/.github/workflows/configure.yml
+++ /dev/null
@@ -1,84 +0,0 @@
-name: Config
-
-on:
-  workflow_dispatch:
-  pull_request:
-  push:
-    branches:
-      - master
-      - stable
-      - v*
-
-jobs:
-  # This tests various versions of CMake in various combinations, to make sure
-  # the configure step passes.
-  cmake:
-    strategy:
-      fail-fast: false
-      matrix:
-        runs-on: [ubuntu-latest, macos-latest, windows-latest]
-        arch: [x64]
-        cmake: [3.18]
-
-        include:
-        - runs-on: ubuntu-latest
-          arch: x64
-          cmake: 3.4
-
-        - runs-on: macos-latest
-          arch: x64
-          cmake: 3.7
-
-        - runs-on: windows-2016
-          arch: x86
-          cmake: 3.8
-
-        - runs-on: windows-2016
-          arch: x86
-          cmake: 3.18
-
-    name: 🐍 3.7 • CMake ${{ matrix.cmake }} • ${{ matrix.runs-on }}
-    runs-on: ${{ matrix.runs-on }}
-
-    steps:
-    - uses: actions/checkout@v2
-
-    - name: Setup Python 3.7
-      uses: actions/setup-python@v2
-      with:
-        python-version: 3.7
-        architecture: ${{ matrix.arch }}
-
-    - name: Prepare env
-      run: python -m pip install -r tests/requirements.txt
-
-    # An action for adding a specific version of CMake:
-    #   https://github.com/jwlawson/actions-setup-cmake
-    - name: Setup CMake ${{ matrix.cmake }}
-      uses: jwlawson/actions-setup-cmake@v1.5
-      with:
-        cmake-version: ${{ matrix.cmake }}
-
-    # These steps use a directory with a space in it intentionally
-    - name: Make build directories
-      run: mkdir "build dir"
-
-    - name: Configure
-      working-directory: build dir
-      shell: bash
-      run: >
-        cmake ..
-        -DPYBIND11_WERROR=ON
-        -DDOWNLOAD_CATCH=ON
-        -DPYTHON_EXECUTABLE=$(python -c "import sys; print(sys.executable)")
-
-    # Only build and test if this was manually triggered in the GitHub UI
-    - name: Build
-      working-directory: build dir
-      if: github.event_name == 'workflow_dispatch'
-      run: cmake --build . --config Release
-
-    - name: Test
-      working-directory: build dir
-      if: github.event_name == 'workflow_dispatch'
-      run: cmake --build . --config Release --target check
diff --git a/.github/workflows/labeler.yml b/.github/workflows/labeler.yml
deleted file mode 100644
index d2b5979681..0000000000
--- a/.github/workflows/labeler.yml
+++ /dev/null
@@ -1,16 +0,0 @@
-name: Labeler
-on:
-  pull_request_target:
-    types: [closed]
-
-jobs:
-  label:
-    name: Labeler
-    runs-on: ubuntu-latest
-    steps:
-
-    - uses: actions/labeler@main
-      if: github.event.pull_request.merged == true
-      with:
-        repo-token: ${{ secrets.GITHUB_TOKEN }}
-        configuration-path: .github/labeler_merged.yml
diff --git a/.github/workflows/pip.yml b/.github/workflows/pip.yml
deleted file mode 100644
index 4414a12ee4..0000000000
--- a/.github/workflows/pip.yml
+++ /dev/null
@@ -1,103 +0,0 @@
-name: Pip
-
-on:
-  workflow_dispatch:
-  pull_request:
-  push:
-    branches:
-    - master
-    - stable
-    - v*
-  release:
-    types:
-    - published
-
-jobs:
-  # This builds the sdists and wheels and makes sure the files are exactly as
-  # expected. Using Windows and Python 2.7, since that is often the most
-  # challenging matrix element.
-  test-packaging:
-    name: 🐍 2.7 • 📦 tests • windows-latest
-    runs-on: windows-latest
-
-    steps:
-    - uses: actions/checkout@v2
-
-    - name: Setup 🐍 2.7
-      uses: actions/setup-python@v2
-      with:
-        python-version: 2.7
-
-    - name: Prepare env
-      run: python -m pip install -r tests/requirements.txt --prefer-binary
-
-    - name: Python Packaging tests
-      run: pytest tests/extra_python_package/
-
-
-  # This runs the packaging tests and also builds and saves the packages as
-  # artifacts.
-  packaging:
-    name: 🐍 3.8 • 📦 & 📦 tests • ubuntu-latest
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v2
-
-    - name: Setup 🐍 3.8
-      uses: actions/setup-python@v2
-      with:
-        python-version: 3.8
-
-    - name: Prepare env
-      run: python -m pip install -r tests/requirements.txt build twine --prefer-binary
-
-    - name: Python Packaging tests
-      run: pytest tests/extra_python_package/
-
-    - name: Build SDist and wheels
-      run: |
-        python -m build
-        PYBIND11_GLOBAL_SDIST=1 python -m build
-
-    - name: Check metadata
-      run: twine check dist/*
-
-    - name: Save standard package
-      uses: actions/upload-artifact@v2
-      with:
-        name: standard
-        path: dist/pybind11-*
-
-    - name: Save global package
-      uses: actions/upload-artifact@v2
-      with:
-        name: global
-        path: dist/pybind11_global-*
-
-
-
-  # When a GitHub release is made, upload the artifacts to PyPI
-  upload:
-    name: Upload to PyPI
-    runs-on: ubuntu-latest
-    if: github.event_name == 'release' && github.event.action == 'published'
-    needs: [packaging]
-
-    steps:
-    - uses: actions/setup-python@v2
-
-    # Downloads all to directories matching the artifact names
-    - uses: actions/download-artifact@v2
-
-    - name: Publish standard package
-      uses: pypa/gh-action-pypi-publish@v1.4.1
-      with:
-        password: ${{ secrets.pypi_password }}
-        packages_dir: standard/
-
-    - name: Publish global package
-      uses: pypa/gh-action-pypi-publish@v1.4.1
-      with:
-        password: ${{ secrets.pypi_password_global }}
-        packages_dir: global/