I tried to use this actions/cache@v2 to cache poetry venv. There are only two libraries pylint and pytest installed. It seems that installation was cached (cache size ~ 26MB). However, they couldn't be retrieved after cache hit.
The cache installed libraries are not found while run
poetry run pip list
Package Version
---------- -------
pip 20.1.1
setuptools 41.2.0
https://github.com/northtree/poetry-github-actions/runs/875926237?check_suite_focus=true#step:9:1
The YAML is here.
Could I know how to use actions/cache@v2 to cache poetry installation / virturalenv to avoid reinstalling dependencies.
@northtree's answer is correct, but for anyone browsing, you should know that the referenced action is no longer maintained.
For Poetry installs using versions >= 1.1.0 I'd recommend using this snippet to cache your Poetry dependencies:
...
- name: Install poetry
uses: snok/install-poetry@v1.0.0
with:
virtualenvs-create: true
virtualenvs-in-project: true
- name: Load cached venv
id: cached-poetry-dependencies
uses: actions/cache@v2
with:
path: .venv
key: venv-${{ runner.os }}-${{ hashFiles('**/poetry.lock') }}
- name: Install dependencies
run: poetry install
if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
...
More complete examples are documented here :)