Vastly overhaul the CI workflow for file checks #847
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This is used in `.github/workflows/ci-file-checks.yaml` to parse the output of Pylint and report errors on the workflow summary page. The [`pylint.json`](https://github.com/home-assistant/core/blob/dev/.github/workflows/matchers/pylint.json) file came from the [Home Assistant](https://github.com/home-assistant/core) project on GitHub. The Home Assistant project is licensed under the Apache 2.0 open-source license.
This is a complete rewrite of the file checks portion of the CI workflow. It incorporates many new features and efficience gains. It also serves as a framework for adding additional file linters/format checkers, such as for YAML, Markdown, shell scripts, and more. Features: - Serious use of caching of the Python installation and environment, so that repeated runs don't have to reinstall everything every time. - Concurrency detection: if a new event such as a push to a PR branch comes in while a workflow is already executing, that workflow is cancelled and a new one restarted. (The existing workflow keeps the existing one running and starts a second one, which is almost never useful.) - File-aware execution: the workflow tests which files have been modified in a given event, and invokes only the relevant lint/format-checker jobs. This reduces compute cycles needed and speeds up the overall execution. - Use of GitHub [Problem Matchers](https://github.com/actions/toolkit/blob/main/docs/problem-matchers.md) for better error reporting. - Addition of a manual run interface, allowing the workflow to be invoked manually from the GitHub GUI with different values for program versions – useful for debugging, testing, exploring behaviors with different versions of linters, etc. - Compatibility with GitHub [merge queues](https://github.blog/news-insights/product-news/github-merge-queue-is-generally-available/).
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Vastly overhaul the CI workflow for file checks
This is a complete rewrite of the file checks portion of the CI workflow. It incorporates many new features and efficiency gains. It also serves as a framework for adding additional file linters/format checkers, such as for YAML, Markdown, shell scripts, and more.
Features:
Serious use of caching of the Python installation and environment, so that repeated runs don't have to reinstall everything every time.
Concurrency detection: if a new event such as a push to a PR branch comes in while a workflow is already executing, that workflow is cancelled and a new one restarted. (The existing workflow keeps the existing one running and starts a second one, which is almost never useful.)
File-aware execution: the workflow tests which files have been modified in a given event, and invokes only the relevant lint/format-checker jobs. This reduces compute cycles needed and speeds up the overall execution.
Use of GitHub Problem Matchers for better error reporting.
Addition of a manual run interface, allowing the workflow to be invoked manually from the GitHub GUI with different values for program versions – useful for debugging, testing, exploring behaviors with different versions of linters, etc.
Compatibility with GitHub merge queues.
For Python, this implements the equivalent of
scripts/lint_all.sh(which, despite its name, actually only lints Python files) and the Python-specific format checks ofscripts/format_check.sh.For C++, this runs clang-format with input limited to the files changed in a given PR.