feat: remove Python 3.8 support, deprecate Python 3.9 support

.github/workflows/build_deploy.yml

@@ -65,8 +65,8 @@ jobs:
     needs: [ "compute_version" ]
     uses: ./.github/workflows/build_python_3.yml
     with:
-      cibw_build: 'cp38* cp39* cp310* cp311* cp312* cp313* cp314*'
-      cibw_skip: 'cp38-win_arm64 cp39-win_arm64 cp310-win_arm64 cp314t*'
+      cibw_build: 'cp39* cp310* cp311* cp312* cp313* cp314*'
+      cibw_skip: 'cp39-win_arm64 cp310-win_arm64 cp314t*'
       library_version: ${{ needs.compute_version.outputs.library_version }}
 
   build_sdist:

.github/workflows/unit_tests.yml

@@ -16,7 +16,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
         # Keep this in sync with hatch.toml
-        python-version: ["3.8", "3.10", "3.12", "3.14"]
+        python-version: ["3.10", "3.12", "3.14"]
 
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

.gitlab/package.yml

@@ -59,8 +59,6 @@ download_dependency_wheels:
     PIP_CACHE_DIR: "${CI_PROJECT_DIR}/.cache/pip"
   parallel:
     matrix: # The image tags that are mirrored are in: https://github.com/DataDog/images/blob/master/mirror.yaml
-      - PYTHON_IMAGE_TAG: "3.8"
-        PYTHON_VERSION: "3.8"
       - PYTHON_IMAGE_TAG: "3.9.13"
         PYTHON_VERSION: "3.9"
       - PYTHON_IMAGE_TAG: "3.10.13"

.gitlab/templates/build-base-venvs.yml

@@ -4,7 +4,7 @@ build_base_venvs:
   needs: []
   parallel:
     matrix:
-      - PYTHON_VERSION: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+      - PYTHON_VERSION: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
   variables:
     CMAKE_BUILD_PARALLEL_LEVEL: '12'
     PIP_VERBOSE: '0'

.gitlab/templates/cached-testrunner.yml

@@ -5,7 +5,7 @@
     EXT_CACHE_VENV: '${{CI_PROJECT_DIR}}/.cache/ext_cache_venv${{PYTHON_VERSION}}'
   before_script: |
     ulimit -c unlimited
-    pyenv global 3.12 3.8 3.9 3.10 3.11 3.13 3.14
+    pyenv global 3.12 3.9 3.10 3.11 3.13 3.14
     export _CI_DD_AGENT_URL=http://${{HOST_IP}}:8126/
     set -e -o pipefail
     if [ ! -d $EXT_CACHE_VENV ]; then

.gitlab/templates/detect-global-locks.yml

@@ -4,7 +4,7 @@ detect-global-locks:
   needs: []
   parallel:
     matrix:
-      - PYTHON_VERSION: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+      - PYTHON_VERSION: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
   variables:
     DD_DYNAMIC_INSTRUMENTATION_ENABLED: '1'
     DD_CODE_ORIGIN_FOR_SPANS_ENABLED: '1'

.gitlab/testrunner.yml

@@ -12,7 +12,7 @@ variables:
   before_script:
     - ulimit -c unlimited
     - git config --global --add safe.directory ${CI_PROJECT_DIR}
-    - pyenv global 3.12 3.8 3.9 3.10 3.11 3.13 3.14
+    - pyenv global 3.12 3.9 3.10 3.11 3.13 3.14
     - export _CI_DD_AGENT_URL=http://${HOST_IP}:8126/
   retry: 2
   artifacts: