prek/docs/diff.md

Difference from pre-commit

General differences

• prek supports both .pre-commit-config.yaml and .pre-commit-config.yml configuration files.
• prek implements some common hooks from pre-commit-hooks in Rust for better performance.
• prek uses ~/.cache/prek as the default cache directory for repos, environments and toolchains.
• prek decoupled hook environment from their repositories, allowing shared toolchains and environments across hooks.
• prek supports language_version as a semver specifier and automatically installs the required toolchains.

Workspace mode

prek supports workspace mode, allowing you to run hooks for multiple projects in a single command. Each subproject can have its own .pre-commit-config.yaml file.

See Workspace Mode for more information.

Python support

• prek supports Python toolchain management, it will install the required Python versions automatically.
• prek uses uv for creating virtual environments and installing dependencies.
• prek supports Python hooks with PEP 723 inline metadata.

prek run

• prek provides dynamic completions of hook id.
• prek run --last-commit to run hooks on files changed by the last commit.
• prek run --directory <DIR> to run hooks on a specified directory.
• prek run [HOOK_ID] [HOOK_ID] ... to run multiple hooks.

prek list

prek list command lists all available hooks, their ids, and descriptions. This provides a better overview of the configured hooks.

prek sample-config

• prek sample-config command has a --file option to write the sample configuration to a specific file.

Future plans

• Global configurations.