pre-commit-update 0.3.0

Simple CLI tool to check and update pre-commit hooks.

pre-commit-update

pre-commit-update is a simple CLI tool to check and update pre-commit hooks.

Table of contents

1. Reasoning
2. Features
3. Installation
4. Usage
   1. Pipeline usage example
      1. GitLab job
   2. pre-commit hook usage example
   3. pyproject.toml usage example

1. Reasoning

pre-commit is a nice little tool that helps you polish your code before releasing it into the wild. It is fairly easy to use. A single pre-commit-config.yaml file can hold multiple hooks (checks) that will go through your code or repository and do certain checks. The problem is that the file is static and once you pin your hook versions after a while they get outdated.

pre-commit-update was created because there is no easy way to update your hooks by using pre-commit autoupdate as it is not versatile enough.

2. Features

Feature	pre-commit-update	pre-commit autoupdate
Dry run (checks for updates, does not update)	Yes	No
Stable versions only	Yes	No
Exclude repo(s) from update check	Yes	Workaround (updates only specified repo(s))
Keep repo(s) (checks for updates, does not update)	Yes	No
Update by hash instead of tag	Yes	Yes
Can be used as a pre-commit hook	Yes	No
Can be configured in pyproject.toml	Yes	No

3. Installation

pre-commit-update is available on PyPI:

$ python -m pip install pre-commit-update

Python >= 3.8 is supported.

NOTE: Please make sure that git is installed.

4. Usage

pre-commit-update CLI can be used as below:

Usage: pre-commit-update [OPTIONS]

Options:
  -d, --dry-run / -nd, --no-dry-run             Dry run only checks for the new versions without updating  [default: nd]
  -a, --all-versions / -na, --no-all-versions   Include the alpha/beta versions when updating  [default: na]
  -v, --verbose / -nv, --no-verbose             Display the complete output  [default: nv]
  -e, --exclude REPO_URL_TRIM                   Exclude specific repo(s) by the `repo` url trim
  -k, --keep REPO_URL_TRIM                      Keep the version of specific repo(s) by the `repo` url trim (still checks for the new versions)
  -h, --help                                    Show this message and exit.

If you want to just check for updates (without updating pre-commit-config.yaml), for example, you would use:

$ pre-commit-update -d

or

$ pre-commit-update --dry-run

NOTE: If you are to use the exclude or keep options, please pass the repo url trim as a parameter. Keep in mind that if you have multiple hooks (id's) configured for a single repo and you exclude that repo, NONE of the hooks will be updated, whole repo will be excluded.

Example of repo url trim: https://github.com/ambv/black -> black (you will only pass black as a parameter to exclude or keep)

1) Pipeline usage example

a) GitLab job:

pre-commit-hooks-update:
  stage: update
  script:
    # install git if not present in the image
    - pip install pre-commit-update
    - pre-commit-update --dry-run
  except:
    - main
  when: manual
  allow_failure: true

NOTE: This is just an example, feel free to do your own configuration

2) pre-commit hook usage example

You can also use pre-commit-update as a hook in your pre-commit hooks:

- repo: https://gitlab.com/vojko.pribudic/pre-commit-update
  rev: v0.3.0  # Insert the latest tag here
  hooks:
    - id: pre-commit-update
      args: [--dry-run, --exclude, black, --keep, isort]

3) pyproject.toml usage example

You can configure pre-commit-update in your pyproject.toml as below (feel free to do your own configuration):

[tool.pre-commit-update]
dry_run = true
all_versions = false
verbose = true
exclude = ["isort"]
keep = ["black"]

NOTE: If some of the options are missing (for example exclude option), pre-commit-update will use default value for that option (default for exclude option would be an empty list).

IMPORTANT If you invoke pre-commit-update with any arguments (e.g. pre-commit-update -d), pyproject.toml configuration will be overridden. This means that all the arguments passed while calling pre-commit-update will have priority over configuration defined inside pyproject.toml. If you want to override boolean flags, you can do so by passing the negative flag value. For example, given the configuration above, to override verbose flag from pyproject.toml, you would invoke pre-commit-update with either --no-verbose or -nv.