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GitHub Actions: Faster Python runs with cached virtual environments
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# See https://adamj.eu/tech/2023/11/02/github-actions-faster-python-virtual-environments/ | |
# ... | |
jobs: | |
example: | |
# ... | |
steps: | |
# ... | |
- uses: actions/setup-python@v5 | |
id: setup-python | |
with: | |
python-version: '3.12' | |
- uses: actions/cache/restore@v4 | |
id: cache-venv-restore | |
with: | |
key: venv-${{ runner.os }}-${{ steps.setup-python.outputs.python-version }}-${{ hashFiles('requirements.txt') }} | |
path: .venv | |
- name: Set up virtualenv | |
run: | | |
[[ ! -d .venv ]] && python -m venv .venv | |
echo "VIRTUAL_ENV=${PWD}/.venv" >> ${GITHUB_ENV} && \ | |
echo "${PWD}/.venv/bin" >> ${GITHUB_PATH} | |
- name: Install dependencies | |
if: steps.cache-venv-restore.outputs.cache-hit != 'true' | |
run: python -m pip install -r requirements.txt | |
- uses: actions/cache/save@v4 | |
if: steps.cache-venv-restore.outputs.cache-hit != 'true' | |
with: | |
key: ${{ steps.cache-venv-restore.outputs.cache-primary-key }} | |
path: .venv | |
# ... |
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