v0.6.0

Frequenz Repository Configuration Release Notes

Summary

This release replaces darglint (not maintained anymore) with pydoclint which brings performance and checks improvements. It also adds basic flake8 checks and mypy fixes.

Upgrading

• flake8 basic checks are enabled now. Most are already covered by pylint, but there are a few differences, so you might need to fix your code if flake8 find some issues.

• darglint:

  • Replaced by pydoclint, pydoclint can find a few more issues than darglint, so your code might need adjusting.

  • It is recommended to remove the darglint configuration file .darglint and the darglint pip package, if it is kept installed, it will make flake8 run extremely slowly even if not used: pip uninstall darglint) and rebuild you nox venvs if you use -R.

• If you are upgrading without regenerating the cookiecutter templates, you'll need to adjust the dependencies accordingly.

• nox: The Config.package_args() method was removed.

• mypy

  • Options must be specified in the pyproject.toml file, including the option packages specifying the package containing the source code of the project. The documentation was updated to suggest the recommended options.

  • Dependencies on stubs for running the type check need to be specified manually in the pyproject.toml file, so they can be pinned (before they were installed automatically by mypy.

  • The mypy nox session runs mypy 2 times, one without options to check the package including the sources, and one with the paths of development paths (tests, benchmarks, etc.).

  To migrate existing projects:

  1. Add the recommended options (previously specified in the default options object):

     [tool.mypy]
     explicit_package_bases = true
     namespace_packages = true
     packages = ["<package.name>"]  # For example: "frequenz.repo.config" for this package
     strict = true

  2. Find out which stubs were previously installed automatically by mypy:

     python -m venv tmp_venv
     . tmp_venv/bin/activate
     pip install -e .[dev-mypy]
     mypy --install-types
     deactivate

  3. Look at the list of packages it offers to install and answer "no".

  4. Search for the latest package version for those packages in https://pypi.org/project//

  5. Edit the pyproject.toml file to add those dependencies in dev-mypy, for example:

     [project.optional-dependencies]
     dev-mypy = [
     "mypy == 1.5.1",
     "types-setuptools == 68.1.0.0",
     # ...

Cookiecutter template

• CI: The nox job now uses a matrix to run the different nox sessions in parallel. If you use branch projection with the nox job you need to update the rules to include each matrix job.

• See the general upgrading section.

New Features

• flake8 is now used to check the files.

• darlint was replaced by pydoclint, which is way faster and detect more issues.

• nox: The Config.path_args() method now accepts two optional arguments to control with paths to include.

Cookiecutter template

• Now dependabot updates will be done weekly and grouped by required and optional for minor and patch updates (major updates are still done individually for each dependency).

• ci: Add debug information when installing pip packages.

  The output of pip freeze is printed to be able to more easily debug different behaviours between GitHub workflow runs and local runs.

• mypy: Add a commented out no-incremental option, which makes the run slower but prevents some issues with mypy giving different results on different runs.

• See the general new features section.

Full Changelog: v0.5.2...v0.6.0