ci.yml

name: CI
on:
  pull_request: {}
  push:
    branches:
      - main
      - '*.*.x'

permissions:
  contents: read

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
  cancel-in-progress: true

env:
  CARGO_INCREMENTAL: 0

jobs:
  linux:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        PYTHON:
          - {VERSION: "3.8", NOXSESSION: "flake"}
          - {VERSION: "3.14", NOXSESSION: "flake"}
          - {VERSION: "3.14", NOXSESSION: "rust"}
          - {VERSION: "3.12", NOXSESSION: "docs", OPENSSL: {TYPE: "openssl", VERSION: "3.6.0"}}
          - {VERSION: "3.14t", NOXSESSION: "rust,tests"}
          - {VERSION: "pypy-3.11", NOXSESSION: "tests-nocoverage"}
          - {VERSION: "3.14", NOXSESSION: "tests", OPENSSL: {TYPE: "openssl", VERSION: "3.6.0", CONFIG_FLAGS: "no-engine no-rc2 no-srtp no-ct no-psk"}}
          - {VERSION: "3.14", NOXSESSION: "tests", OPENSSL: {TYPE: "openssl", VERSION: "3.6.0", CONFIG_FLAGS: "no-legacy", NO_LEGACY: "0"}}
          - {VERSION: "3.14", NOXSESSION: "tests", OPENSSL: {TYPE: "openssl", VERSION: "3.6.0", CONFIG_FLAGS: "no-legacy", NO_LEGACY: "1"}}
          - {VERSION: "3.14", NOXSESSION: "tests", NOXARGS: "--enable-fips=1", OPENSSL: {TYPE: "openssl", CONFIG_FLAGS: "enable-fips", VERSION: "3.6.0"}}
          - {VERSION: "3.14", NOXSESSION: "tests", OPENSSL: {TYPE: "openssl", VERSION: "3.0.18"}}
          - {VERSION: "3.14", NOXSESSION: "tests", OPENSSL: {TYPE: "openssl", VERSION: "3.3.5"}}
          - {VERSION: "3.14", NOXSESSION: "tests", OPENSSL: {TYPE: "openssl", VERSION: "3.4.3"}}
          - {VERSION: "3.14", NOXSESSION: "tests", OPENSSL: {TYPE: "openssl", VERSION: "3.5.4"}}
          - {VERSION: "3.14", NOXSESSION: "tests-ssh", OPENSSL: {TYPE: "openssl", VERSION: "3.6.0"}}
          - {VERSION: "3.14", NOXSESSION: "rust,tests", OPENSSL: {TYPE: "libressl", VERSION: "4.1.2"}}
          - {VERSION: "3.14", NOXSESSION: "rust,tests", OPENSSL: {TYPE: "libressl", VERSION: "4.2.1"}}
          # Latest commit on the BoringSSL main branch, as of Dec 30, 2025.
          - {VERSION: "3.14", NOXSESSION: "rust,tests", OPENSSL: {TYPE: "boringssl", VERSION: "a6f3c4c14e6515c8c7f213032be8dee3f18a9b19"}}
          # Latest tag of AWS-LC main branch, as of Dec 19, 2025.
          - {VERSION: "3.14", NOXSESSION: "rust,tests", OPENSSL: {TYPE: "aws-lc", VERSION: "v1.66.1"}}
          # Latest commit on the OpenSSL master branch, as of Sep 04, 2025.
          - {VERSION: "3.14", NOXSESSION: "tests", OPENSSL: {TYPE: "openssl", VERSION: "ceb45f64bde3d299c7ef529e5cd5372e4a421366"}}
          # Builds with various Rust versions. Includes MSRV and next
          # potential future MSRV.
          - {VERSION: "3.14", NOXSESSION: "rust,tests", RUST: "1.83.0"}
          - {VERSION: "3.14", NOXSESSION: "rust,tests", RUST: "beta"}
          - {VERSION: "3.14", NOXSESSION: "rust,tests", RUST: "nightly"}
          - {VERSION: "3.14", NOXSESSION: "tests-rust-debug"}
          # Not actually an MSRV, just for coverage on this
          - {VERSION: "3.14", NOXSESSION: "tests", RUST: "1.87", OPENSSL: {TYPE: "openssl", VERSION: "3.6.0"}}
          - {VERSION: "3.14", NOXSESSION: "tests", RUST: "1.87", NOXARGS: "--enable-fips=1", OPENSSL: {TYPE: "openssl", CONFIG_FLAGS: "enable-fips", VERSION: "3.6.0"}}
    timeout-minutes: 15
    steps:
      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
        timeout-minutes: 3
        with:
          persist-credentials: false
      - name: Setup python
        id: setup-python
        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
        with:
          python-version: ${{ matrix.PYTHON.VERSION }}
          cache: pip
          cache-dependency-path: ci-constraints-requirements.txt
        timeout-minutes: 3
      - name: Setup rust
        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9
        with:
          toolchain: ${{ matrix.PYTHON.RUST }}
          components: rustfmt,clippy
        if: matrix.PYTHON.RUST

      - run: rustup component add llvm-tools-preview
        if: matrix.PYTHON.NOXSESSION != 'flake' && matrix.PYTHON.NOXSESSION != 'docs'
      - name: Clone test vectors
        timeout-minutes: 2
        uses: ./.github/actions/fetch-vectors
        if: matrix.PYTHON.NOXSESSION != 'flake' && matrix.PYTHON.NOXSESSION != 'docs' && matrix.PYTHON.NOXSESSION != 'rust'
      - name: Compute config hash and set config vars
        run: |
          DEFAULT_CONFIG_FLAGS="shared no-ssl2 no-ssl3"
          CONFIG_FLAGS="$DEFAULT_CONFIG_FLAGS $CONFIG_FLAGS"
          OPENSSL_HASH=$(echo "${{ matrix.PYTHON.OPENSSL.TYPE }}-${{ matrix.PYTHON.OPENSSL.VERSION }}-$CONFIG_FLAGS" | sha1sum | sed 's/ .*$//')
          echo "CONFIG_FLAGS=${CONFIG_FLAGS}" >> $GITHUB_ENV
          echo "OPENSSL_HASH=${OPENSSL_HASH}" >> $GITHUB_ENV
          echo "OSSL_INFO=${{ matrix.PYTHON.OPENSSL.TYPE }}-${{ matrix.PYTHON.OPENSSL.VERSION }}-${CONFIG_FLAGS}" >> $GITHUB_ENV
          echo "OSSL_PATH=${{ github.workspace }}/osslcache/${{ matrix.PYTHON.OPENSSL.TYPE }}-${{ matrix.PYTHON.OPENSSL.VERSION }}-${OPENSSL_HASH}" >> $GITHUB_ENV
        env:
          CONFIG_FLAGS: ${{ matrix.PYTHON.OPENSSL.CONFIG_FLAGS }}
        if: matrix.PYTHON.OPENSSL
      - name: Load OpenSSL cache
        uses: actions/cache@9255dc7a253b0ccc959486e2bca901246202afeb # v5.0.1
        id: ossl-cache
        timeout-minutes: 2
        with:
          path: ${{ github.workspace }}/osslcache
          # When altering the openssl build process you may need to increment
          # the value on the end of this cache key so that you can prevent it
          # from fetching the cache and skipping the build step.
          key: "${{ matrix.PYTHON.OPENSSL.TYPE }}-${{ matrix.PYTHON.OPENSSL.VERSION }}-${{ env.OPENSSL_HASH }}-${{ hashFiles('.github/bin/build_openssl.sh') }}-0"
        if: matrix.PYTHON.OPENSSL
      - name: Build custom OpenSSL/LibreSSL
        run: .github/bin/build_openssl.sh
        env:
          TYPE: ${{ matrix.PYTHON.OPENSSL.TYPE }}
          VERSION: ${{ matrix.PYTHON.OPENSSL.VERSION }}
        if: matrix.PYTHON.OPENSSL && steps.ossl-cache.outputs.cache-hit != 'true'
      - name: Set CFLAGS/LDFLAGS
        run: |
          echo "OPENSSL_DIR=${OSSL_PATH}" >> $GITHUB_ENV
          echo "CFLAGS=${CFLAGS} -Werror=implicit-function-declaration" >> $GITHUB_ENV
          echo "RUSTFLAGS=-Clink-arg=-Wl,-rpath=${OSSL_PATH}/lib -Clink-arg=-Wl,-rpath=${OSSL_PATH}/lib64" >> $GITHUB_ENV
        if: matrix.PYTHON.OPENSSL
      - run: cargo install bindgen-cli
        if: matrix.PYTHON.OPENSSL.TYPE == 'boringssl' || matrix.PYTHON.OPENSSL.TYPE == 'aws-lc'
      - name: Cache rust and pip
        uses: ./.github/actions/cache
        timeout-minutes: 2
        with:
          # We have both the Python version from the matrix and from the
          # setup-python step because the latter doesn't distinguish
          # pypy3-3.8 and pypy3-3.9 -- both of them show up as 7.3.11.
          key: "${{ matrix.PYTHON.VERSION }}-${{ steps.setup-python.outputs.python-version }}-${{ matrix.PYTHON.NOXSESSION }}-${{ env.OPENSSL_HASH }}-0"

      - run: python -m pip install -c ci-constraints-requirements.txt 'nox[uv]' 'tomli; python_version < "3.11"'
      - name: Create nox environment
        run: |
            nox -v --install-only
        env:
          NOXSESSION: ${{ matrix.PYTHON.NOXSESSION }}
          # Needed until https://github.com/PyO3/pyo3/issues/5093
          PYO3_USE_ABI3_FORWARD_COMPATIBILITY: 1
      - name: Tests
        run: |
            nox --no-install --  --color=yes --wycheproof-root=wycheproof --x509-limbo-root=x509-limbo ${{ matrix.PYTHON.NOXARGS }}
        env:
          NOXSESSION: ${{ matrix.PYTHON.NOXSESSION }}
          COLUMNS: 80
          CRYPTOGRAPHY_OPENSSL_NO_LEGACY: ${{ matrix.PYTHON.OPENSSL.NO_LEGACY }}

      - uses: ./.github/actions/upload-coverage

  distros:
    runs-on: ${{ matrix.IMAGE.RUNNER }}
    container: ghcr.io/pyca/cryptography-runner-${{ matrix.IMAGE.IMAGE }}
    strategy:
      fail-fast: false
      matrix:
        IMAGE:
          - {IMAGE: "bookworm", NOXSESSION: "tests", RUNNER: "ubuntu-latest"}
          - {IMAGE: "trixie", NOXSESSION: "tests", RUNNER: "ubuntu-latest"}
          - {IMAGE: "sid", NOXSESSION: "tests", RUNNER: "ubuntu-latest"}
          - {IMAGE: "ubuntu-jammy", NOXSESSION: "tests", RUNNER: "ubuntu-latest"}
          - {IMAGE: "ubuntu-noble", NOXSESSION: "tests", RUNNER: "ubuntu-latest"}
          - {IMAGE: "ubuntu-rolling", NOXSESSION: "tests", RUNNER: "ubuntu-latest"}
          - {IMAGE: "fedora", NOXSESSION: "tests", RUNNER: "ubuntu-latest"}
          - {IMAGE: "centos-stream9", NOXSESSION: "tests", RUNNER: "ubuntu-latest"}
          - {IMAGE: "centos-stream9-fips", NOXSESSION: "tests", RUNNER: "ubuntu-latest", FIPS: true}
          - {IMAGE: "centos-stream10", NOXSESSION: "tests", RUNNER: "ubuntu-latest"}
          - {IMAGE: "centos-stream10-fips", NOXSESSION: "tests", RUNNER: "ubuntu-latest", FIPS: true}

          - {IMAGE: "ubuntu-rolling:aarch64", NOXSESSION: "tests", RUNNER: "ubuntu-24.04-arm"}

          - {IMAGE: "ubuntu-rolling:armv7l", NOXSESSION: "tests", RUNNER: "ubuntu-24.04-arm"}

          # Disable coverage until coverage.py has a wheel with C ext for ppc64le
          - {IMAGE: "ubuntu-rolling:ppc64le", NOXSESSION: "tests-nocoverage", RUNNER: "ubuntu-24.04-ppc64le"}
    timeout-minutes: 15
    env:
      RUSTUP_HOME: /root/.rustup
    steps:
      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
        timeout-minutes: 3
        with:
          persist-credentials: false
      - name: Cache rust and pip
        uses: ./.github/actions/cache
        timeout-minutes: 2
        with:
          key: ${{ matrix.IMAGE.IMAGE }}
      - name: Clone test vectors
        timeout-minutes: 2
        uses: ./.github/actions/fetch-vectors
      # When run in a docker container the home directory doesn't have the same owner as the
      # apparent user so pip refuses to create a cache dir
      - name: create pip cache dir
        run: mkdir -p "${HOME}/.cache/pip"
      - run: |
          echo "OPENSSL_FORCE_FIPS_MODE=1" >> $GITHUB_ENV
        if: matrix.IMAGE.FIPS
      - run: /venv/bin/python -m pip install -c ci-constraints-requirements.txt 'nox[uv]' 'tomli; python_version < "3.11"'
      - run: '/venv/bin/nox -v --install-only'
        env:
          # OPENSSL_ENABLE_SHA1_SIGNATURES is for CentOS 9 Stream
          OPENSSL_ENABLE_SHA1_SIGNATURES: 1
          NOXSESSION: ${{ matrix.IMAGE.NOXSESSION }}
      - run: '/venv/bin/nox --no-install --  --color=yes --wycheproof-root="wycheproof" --x509-limbo-root="x509-limbo"'
        env:
          COLUMNS: 80
          # OPENSSL_ENABLE_SHA1_SIGNATURES is for CentOS 9 Stream
          OPENSSL_ENABLE_SHA1_SIGNATURES: 1
          NOXSESSION: ${{ matrix.IMAGE.NOXSESSION }}
      - uses: ./.github/actions/upload-coverage

  alpine:
    runs-on: ${{ matrix.IMAGE.RUNNER }}
    container:
      image: ghcr.io/pyca/cryptography-runner-${{ matrix.IMAGE.IMAGE }}
      volumes:
        - /staticnodehost:/staticnodecontainer:rw,rshared
        - /staticnodehost/20:/__e/node20:ro,rshared
        - /staticnodehost/24:/__e/node24:ro,rshared
    strategy:
      fail-fast: false
      matrix:
        IMAGE:
          - {IMAGE: "alpine", NOXSESSION: "tests", RUNNER: "ubuntu-latest"}
          - {IMAGE: "alpine:aarch64", NOXSESSION: "tests", RUNNER: "ubuntu-24.04-arm"}
    timeout-minutes: 15
    env:
      RUSTUP_HOME: /root/.rustup
    steps:
      - name: Ridiculous-er workaround for static node20
        run: |
          cp -R /staticnode/* /staticnodecontainer/
      - name: Ridiculous alpine workaround for actions support on arm64
        run: |
          # This modifies /etc/os-release so the JS actions
          # from GH can't detect that it's on alpine:aarch64. It will
          # then use a glibc nodejs, which works fine when gcompat
          # is installed in the container (which it is)
          sed -i "s:ID=alpine:ID=NotpineForGHA:" /etc/os-release
        if: matrix.IMAGE.IMAGE == 'alpine:aarch64'

      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
        timeout-minutes: 3
        with:
          persist-credentials: false
      - name: Cache rust and pip
        uses: ./.github/actions/cache
        timeout-minutes: 2
        with:
          key: ${{ matrix.IMAGE.IMAGE }}
      - name: Clone test vectors
        timeout-minutes: 2
        uses: ./.github/actions/fetch-vectors
      # When run in a docker container the home directory doesn't have the same owner as the
      # apparent user so pip refuses to create a cache dir
      - name: create pip cache dir
        run: mkdir -p "${HOME}/.cache/pip"
      - run: |
          echo "OPENSSL_FORCE_FIPS_MODE=1" >> $GITHUB_ENV
        if: matrix.IMAGE.FIPS
      - run: /venv/bin/python -m pip install -c ci-constraints-requirements.txt 'nox[uv]' 'tomli; python_version < "3.11"'
      - run: '/venv/bin/nox -v --install-only'
        env:
          # OPENSSL_ENABLE_SHA1_SIGNATURES is for CentOS 9 Stream
          OPENSSL_ENABLE_SHA1_SIGNATURES: 1
          NOXSESSION: ${{ matrix.IMAGE.NOXSESSION }}
      - run: '/venv/bin/nox --no-install --  --color=yes --wycheproof-root="wycheproof" --x509-limbo-root="x509-limbo"'
        env:
          COLUMNS: 80
          # OPENSSL_ENABLE_SHA1_SIGNATURES is for CentOS 9 Stream
          OPENSSL_ENABLE_SHA1_SIGNATURES: 1
          NOXSESSION: ${{ matrix.IMAGE.NOXSESSION }}
      - uses: ./.github/actions/upload-coverage

  macos:
    runs-on: ${{ matrix.RUNNER.OS }}
    strategy:
      fail-fast: false
      matrix:
        RUNNER:
          - {OS: 'macos-15-intel', ARCH: 'x86_64'}
          - {OS: 'macos-15', ARCH: 'arm64'}
        PYTHON:
          - {VERSION: "3.8", NOXSESSION: "tests"}
          - {VERSION: "3.14", NOXSESSION: "tests"}
          - {VERSION: "3.14t", NOXSESSION: "tests"}
        exclude:
          # We only test latest Python on arm64. py38 won't work since there's no universal2 binary
          - PYTHON: {VERSION: "3.8", NOXSESSION: "tests"}
            RUNNER: {OS: 'macos-15', ARCH: 'arm64'}
    timeout-minutes: 15
    steps:
      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
        timeout-minutes: 3
        with:
          persist-credentials: false
      - name: Cache rust and pip
        uses: ./.github/actions/cache
        timeout-minutes: 2
        with:
          key: ${{ matrix.PYTHON.NOXSESSION }}-${{ matrix.PYTHON.VERSION }}

      - name: Setup python
        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
        with:
          python-version: ${{ matrix.PYTHON.VERSION }}
          cache: pip
          cache-dependency-path: ci-constraints-requirements.txt
        timeout-minutes: 3
      - run: rustup component add llvm-tools-preview

      - run: python -m pip install -c ci-constraints-requirements.txt 'nox[uv]' 'tomli; python_version < "3.11"'

      - name: Clone test vectors
        timeout-minutes: 2
        uses: ./.github/actions/fetch-vectors

      - uses: dawidd6/action-download-artifact@0bd50d53a6d7fb5cb921e607957e9cc12b4ce392 # v12
        with:
          repo: pyca/infra
          workflow: build-macos-openssl.yml
          branch: main
          workflow_conclusion: success
          name: openssl-macos-universal2
          path: "../openssl-macos-universal2/"
          github_token: ${{ secrets.GITHUB_TOKEN }}
      - name: Build nox environment
        run: |
          OPENSSL_DIR=$(readlink -f ../openssl-macos-universal2/) \
            OPENSSL_STATIC=1 \
            CFLAGS="-Werror -Wno-error=deprecated-declarations -Wno-error=incompatible-pointer-types-discards-qualifiers -Wno-error=unused-function" \
            nox -v --install-only
        env:
          NOXSESSION: ${{ matrix.PYTHON.NOXSESSION }}
          MACOSX_DEPLOYMENT_TARGET: "10.13"
      - name: Tests
        run: nox --no-install --  --color=yes --wycheproof-root=wycheproof --x509-limbo-root=x509-limbo
        env:
          NOXSESSION: ${{ matrix.PYTHON.NOXSESSION }}
          COLUMNS: 80

      - uses: ./.github/actions/upload-coverage

  windows:
    runs-on: ${{ matrix.WINDOWS.RUNNER }}
    strategy:
      fail-fast: false
      matrix:
        WINDOWS:
          - {ARCH: 'x86', WINDOWS: 'win32', RUNNER: 'windows-latest'}
          - {ARCH: 'x64', WINDOWS: 'win64', RUNNER: 'windows-latest'}
        PYTHON:
          - {VERSION: "3.8", NOXSESSION: "tests-nocoverage"}
          - {VERSION: "3.14", NOXSESSION: "tests"}
          - {VERSION: "3.14t", NOXSESSION: "tests"}
        include:
          # Not in the main matrix because we want tests-nocoverage on Python
          # 3.14
          - PYTHON: {VERSION: "3.14", NOXSESSION: "tests-nocoverage"}
            WINDOWS: {ARCH: 'arm64', WINDOWS: 'arm64', RUNNER: 'windows-11-arm'}
    timeout-minutes: 15
    steps:
      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
        timeout-minutes: 3
        with:
          persist-credentials: false
      - name: Setup python
        id: setup-python
        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
        with:
          python-version: ${{ matrix.PYTHON.VERSION }}
          architecture: ${{ matrix.WINDOWS.ARCH }}
          cache: pip
          cache-dependency-path: ci-constraints-requirements.txt
        timeout-minutes: 3
      - run: rustup component add llvm-tools-preview
      - name: Cache rust and pip
        uses: ./.github/actions/cache
        timeout-minutes: 2
        with:
          key: ${{ matrix.PYTHON.NOXSESSION }}-${{ matrix.WINDOWS.ARCH }}-${{ steps.setup-python.outputs.python-version }}
      - run: python -m pip install -c ci-constraints-requirements.txt "nox[uv]" "tomli; python_version < '3.11'"

      - uses: dawidd6/action-download-artifact@0bd50d53a6d7fb5cb921e607957e9cc12b4ce392 # v12
        with:
          repo: pyca/infra
          workflow: build-windows-openssl.yml
          branch: main
          workflow_conclusion: success
          name: "openssl-${{ matrix.WINDOWS.WINDOWS }}"
          path: "C:/openssl-${{ matrix.WINDOWS.WINDOWS }}/"
          github_token: ${{ secrets.GITHUB_TOKEN }}
      - name: Configure
        run: |
            echo "OPENSSL_DIR=C:/openssl-${{ matrix.WINDOWS.WINDOWS }}" >> $GITHUB_ENV
        shell: bash

      - name: Clone test vectors
        timeout-minutes: 2
        uses: ./.github/actions/fetch-vectors

      - name: Build nox environment
        run: nox -v --install-only
        env:
          NOXSESSION: ${{ matrix.PYTHON.NOXSESSION }}
      - name: Tests
        run: nox --no-install --  --color=yes --wycheproof-root=wycheproof --x509-limbo-root=x509-limbo
        env:
          NOXSESSION: ${{ matrix.PYTHON.NOXSESSION }}
          COLUMNS: 80

      - uses: ./.github/actions/upload-coverage

  linux-downstream:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        include:
          - DOWNSTREAM: paramiko
            REPO: paramiko/paramiko
            # Latest commit on the paramiko main branch, as of Oct 20, 2025.
            REF: 8697158113a3eab25ed1d1d541ebe2cad10169a7
            PATH: paramiko
          - DOWNSTREAM: pyopenssl
            REPO: pyca/pyopenssl
            # Latest commit on the pyopenssl main branch, as of Dec 17, 2025.
            REF: c835ff56024f9ead0732a434e8771752d15c6f88
            PATH: pyopenssl
          - DOWNSTREAM: pyopenssl-release
            REPO: pyca/pyopenssl
            # Latest release tag of pyopenssl-release, as of Sep 18, 2025.
            REF: 25.3.0
            PATH: pyopenssl
          - DOWNSTREAM: twisted
            REPO: twisted/twisted
            # Latest commit on the twisted trunk branch, as of Dec 12, 2025.
            REF: d1da93654b14ba6870ce77ce77daf584451c2e8f
            PATH: twisted
          - DOWNSTREAM: aws-encryption-sdk-python
            REPO: awslabs/aws-encryption-sdk-python
            # Latest commit on the aws-encryption-sdk-python master branch, as of Sep 16, 2025.
            REF: d316a1835869a27b76ff6dfe8db6897e85f6eebd
            PATH: aws-encryption-sdk-python
          - DOWNSTREAM: dynamodb-encryption-sdk
            REPO: awslabs/aws-dynamodb-encryption-python
            # Latest commit on the aws-dynamodb-encryption-python master branch, as of Aug 05, 2025.
            REF: a16e536573a89f53a2ad82e55aa8acb090a37ebe
            PATH: aws-dynamodb-encryption-python
          - DOWNSTREAM: certbot
            REPO: certbot/certbot
            # Latest commit on the certbot main branch, as of Dec 18, 2025.
            REF: ac8ed3ba4e3da43085f452776c83bb08036a91fc
            PATH: certbot
          - DOWNSTREAM: certbot-josepy
            REPO: certbot/josepy
            # Latest commit on the certbot-josepy main branch, as of Dec 17, 2025.
            REF: 818c4426d5d3f1ac95d5577f70f0e67c00408aba
            PATH: josepy
          - DOWNSTREAM: mitmproxy
            REPO: mitmproxy/mitmproxy
            # Latest commit on the mitmproxy main branch, as of Dec 02, 2025.
            REF: 116e3cd149c895b814df2ab754adc0e97e77703a
            PATH: mitmproxy
          - DOWNSTREAM: scapy
            REPO: secdev/scapy
            # Latest commit on the scapy master branch, as of Dec 26, 2025.
            REF: 40fc5ecf9e69e9bd76664d63ae133d4973fcf81b
            PATH: scapy
          - DOWNSTREAM: sigstore-python
            REPO: sigstore/sigstore-python
            # Latest commit on the sigstore-python main branch, as of Dec 23, 2025.
            REF: 524df83642a3247d98d846458d92beb81b6c284a
            PATH: sigstore-python
    name: "Downstream tests for ${{ matrix.DOWNSTREAM }}"
    timeout-minutes: 15
    steps:
      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
        timeout-minutes: 3
        with:
          persist-credentials: false
      - name: Checkout downstream repository
        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
        timeout-minutes: 3
        with:
          repository: ${{ matrix.REPO }}
          ref: ${{ matrix.REF }}
          path: ${{ matrix.PATH }}
          persist-credentials: false
      - name: Cache rust and pip
        uses: ./.github/actions/cache
        timeout-minutes: 2
      - name: Setup python
        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
        with:
          python-version: '3.12'
          cache: pip
          cache-dependency-path: ci-constraints-requirements.txt
        timeout-minutes: 3

      - run: python -m pip install -c ci-constraints-requirements.txt 'uv'
      - run: uv venv
      - run: source .venv/bin/activate && ./.github/downstream.d/${{ matrix.DOWNSTREAM }}.sh install
      - run: uv pip install .
      # cryptography main has a version of "(X+1).0.0.dev1" where X is the
      # most recently released major version. A package used by a downstream
      # may depend on cryptography <=X. If you use entrypoints stuff, this can
      # lead to runtime errors due to version incompatibilities. Rename the
      # dist-info directory to pretend to be an older version to "solve" this.
      - run: |
          .venv/bin/python <<EOF
          import json
          import importlib.metadata
          import shutil
          import urllib.request

          d = importlib.metadata.distribution("cryptography")
          with urllib.request.urlopen("https://pypi.org/pypi/cryptography/json") as r:
              latest_version = json.load(r)["info"]["version"]
          new_path = d.locate_file(f"cryptography-{latest_version}.dist-info")
          shutil.move(d.locate_file(f"cryptography-{d.version}.dist-info"), new_path)

          EOF
      - run: source .venv/bin/activate && ./.github/downstream.d/${{ matrix.DOWNSTREAM }}.sh run

  all-green:
    # https://github.community/t/is-it-possible-to-require-all-github-actions-tasks-to-pass-without-enumerating-them/117957/4?u=graingert
    runs-on: ubuntu-latest
    needs: [linux, alpine, distros, macos, windows, linux-downstream]
    if: ${{ always() }}
    timeout-minutes: 3
    steps:
      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
        timeout-minutes: 3
        with:
          persist-credentials: false
      - name: Decide whether the needed jobs succeeded or failed
        uses: re-actors/alls-green@05ac9388f0aebcb5727afa17fcccfecd6f8ec5fe # v1.2.2
        with:
          jobs: ${{ toJSON(needs) }}
      - name: Setup python
        if: ${{ always() }}
        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
        with:
          python-version: '3.14'
          cache: pip
          cache-dependency-path: ci-constraints-requirements.txt
        timeout-minutes: 3
      - run: pip install -c ci-constraints-requirements.txt coverage[toml]
        if: ${{ always() }}
      - name: Download coverage data
        if: ${{ always() }}
        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7.0.0
        with:
          pattern: coverage-data-*
          merge-multiple: true
          path: coverage-data/
      - name: Combine coverage and fail if it's <100%.
        if: ${{ always() }}
        id: combinecoverage
        run: |
          set +e
          echo "## Coverage" >> $GITHUB_STEP_SUMMARY
          python -u .github/bin/merge_rust_coverage.py coverage-data/ | tee COV_REPORT
          COV_EXIT_CODE=${PIPESTATUS[0]}
          if [ $COV_EXIT_CODE -ne 0 ]; then
            echo "🚨 Coverage failed. Under 100" | tee -a $GITHUB_STEP_SUMMARY
          fi
          echo '```' >> $GITHUB_STEP_SUMMARY
          cat COV_REPORT >> $GITHUB_STEP_SUMMARY
          echo '```' >> $GITHUB_STEP_SUMMARY
          exit $COV_EXIT_CODE
      - name: Upload HTML report.
        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
        with:
          name: _html-coverage-report
          path: htmlcov
          if-no-files-found: ignore
        if: ${{ failure() && steps.combinecoverage.outcome == 'failure' }}