v0.3.4

j178/prekv0.3.4Feb 28, 2026by github-actions[bot]

AI Summary

This release adds environment variable configuration for concurrency and log truncation, improves Rust toolchain handling, and includes performance improvements through bitset-based TagSet refactoring.

Key Highlights

Added PREK_MAX_CONCURRENCY environment variable for configuring maximum concurrency
Added PREK_LOG_TRUNCATE_LIMIT environment variable for configuring log truncation
Support for `python -m prek`
Bitset-based TagSet refactor for performance
Parallel gem installation and compilation

New Features

Allow pass_filenames to accept a positive integer
Install and compile gems in parallel
Sync identify file-type mappings with pre-commit identify
Use --locked for Rust cargo install commands
Add PREK_MAX_CONCURRENCY environment variable
Add PREK_LOG_TRUNCATE_LIMIT environment variable
Add support for python -m prek
Skip invalid Rust toolchains instead of failing

Full Release Notes

## Release Notes

Released on 2026-02-28.

### Enhancements

- Allow `pass_filenames` to accept a positive integer ([#1698](https://github.com/j178/prek/pull/1698))
- Install and compile gems in parallel ([#1674](https://github.com/j178/prek/pull/1674))
- Sync identify file-type mappings with pre-commit identify ([#1660](https://github.com/j178/prek/pull/1660))
- Use `--locked` for Rust `cargo install` commands ([#1661](https://github.com/j178/prek/pull/1661))
- Add `PREK_MAX_CONCURRENCY` environment variable for configuring maximum concurrency ([#1697](https://github.com/j178/prek/pull/1697))
- Add `PREK_LOG_TRUNCATE_LIMIT` environment variable for configuring log truncation ([#1679](https://github.com/j178/prek/pull/1679))
- Add support for `python -m prek` ([#1686](https://github.com/j178/prek/pull/1686))

### Bug fixes

- Skip invalid Rust toolchains instead of failing ([#1699](https://github.com/j178/prek/pull/1699))

### Performance

- Bitset-based TagSet refactor: precompute tag masks and speed up hook type filtering ([#1665](https://github.com/j178/prek/pull/1665))

### Documentation

- Document `winget install j178.Prek` ([#1670](https://github.com/j178/prek/pull/1670))

### Contributors

- @uplsh580
- @Svecco
- @dbast
- @drichardson
- @JP-Ellis
- @j178
- @is-alnilam
- @copilot-swe-agent

## Install prek 0.3.4

### Install prebuilt binaries via shell script

```sh
curl --proto '=https' --tlsv1.2 -LsSf https://github.com/j178/prek/releases/download/v0.3.4/prek-installer.sh | sh
```

### Install prebuilt binaries via powershell script

```sh
powershell -ExecutionPolicy Bypass -c "irm https://github.com/j178/prek/releases/download/v0.3.4/prek-installer.ps1 | iex"
```

### Install prebuilt binaries via Homebrew

```sh
brew install j178/tap/prek
```

### Install prebuilt binaries into your npm project

```sh
npm install @j178/prek@0.3.4
```

## Download prek 0.3.4

|  File  | Platform | Checksum |
|--------|----------|----------|
| [prek-aarch64-apple-darwin.tar.gz](https://github.com/j178/prek/releases/download/v0.3.4/prek-aarch64-apple-darwin.tar.gz) | Apple Silicon macOS | [checksum](https://github.com/j178/prek/releases/download/v0.3.4/prek-aarch64-apple-darwin.tar.gz.sha256) |
| [prek-x86_64-apple-darwin.tar.gz](https://github.com/j178/prek/releases/download/v0.3.4/prek-x86_64-apple-darwin.tar.gz) | Intel macOS | [checksum](https://github.com/j178/prek/releases/download/v0.3.4/prek-x86_64-apple-darwin.tar.gz.sha256) |
| [prek-aarch64-pc-windows-msvc.zip](https://github.com/j178/prek/releases/download/v0.3.4/prek-aarch64-pc-windows-msvc.zip) | ARM64 Windows | [checksum](https://github.com/j178/prek/releases/download/v0.3.4/prek-aarch64-pc-windows-msvc.zip.sha256) |
| [prek-i686-pc-windows-msvc.zip](https://github.com/j178/prek/releases/download/v0.3.4/prek-i686-pc-windows-msvc.zip) | x86 Windows | [checksum](https://github.com/j178/prek/releases/download/v0.3.4/prek-i686-pc-windows-msvc.zip.sha256) |
| [prek-x86_64-pc-windows-msvc.zip](https://github.com/j178/prek/releases/download/v0.3.4/prek-x86_64-pc-windows-msvc.zip) | x64 Windows | [checksum](https://github.com/j178/prek/releases/download/v0.3.4/prek-x86_64-pc-windows-msvc.zip.sha256) |
| [prek-aarch64-unknown-linux-gnu.tar.gz](https://github.com/j178/prek/releases/download/v0.3.4/prek-aarch64-unknown-linux-gnu.tar.gz) | ARM64 Linux | [checksum](https://github.com/j178/prek/releases/download/v0.3.4/prek-aarch64-unknown-linux-gnu.tar.gz.sha256) |
| [prek-i686-unknown-linux-gnu.tar.gz](https://github.com/j178/prek/releases/download/v0.3.4/prek-i686-unknown-linux-gnu.tar.gz) | x86 Linux | [checksum](https://github.com/j178/prek/releases/download/v0.3.4/prek-i686-unknown-linux-gnu.tar.gz.sha256) |
| [prek-riscv64gc-unknown-linux-gnu.tar.gz](https://github.com/j178/prek/releases/download/v0.3.4/prek-riscv64gc-unknown-linux-gnu.tar.gz) | RISCV Linux | [checksum](https://github.com/j178/prek/releases/download/v0.3.4/prek-riscv64gc-unknown-linux-gnu.tar.gz.sha256) |
| [prek-s390x-unknown-linux-gnu.tar.gz](https://github.com/j178/prek/releases/download/v0.3.4/prek-s390x-unknown-linux-gnu.tar.gz) | S390x Linux | [checksum](https://github.com/j178/prek/releases/download/v0.3.4/prek-s390x-unknown-linux-gnu.tar.gz.sha256) |
| [prek-x86_64-unknown-linux-gnu.tar.gz](https://github.com/j178/prek/releases/download/v0.3.4/prek-x86_64-unknown-linux-gnu.tar.gz) | x64 Linux | [checksum](https://github.com/j178/prek/releases/download/v0.3.4/prek-x86_64-unknown-linux-gnu.tar.gz.sha256) |
| [prek-armv7-unknown-linux-gnueabihf.tar.gz](https://github.com/j178/prek/releases/download/v0.3.4/prek-armv7-unknown-linux-gnueabihf.tar.gz) | ARMv7 Linux | [checksum](https://github.com/j178/prek/releases/download/v0.3.4/prek-armv7-unknown-linux-gnueabihf.tar.gz.sha256) |
| [prek-aarch64-unknown-linux-musl.tar.gz](https://github.com/j178/prek/releases/download/v0.3.4/prek-aarch64-unknown-linux-musl.tar.gz) | ARM64 MUSL Linux | [checksum](https://github.com/j178/prek/releases/download/v0.3.4/prek-aarch64-unknown-linux-musl.tar.gz.sha256) |
| [prek-i686-unknown-linux-musl.tar.gz](https://github.com/j178/prek/releases/download/v0.3.4/prek-i686-unknown-linux-musl.tar.gz) | x86 MUSL Linux | [checksum](https://github.com/j178/prek/releases/download/v0.3.4/prek-i686-unknown-linux-musl.tar.gz.sha256) |
| [prek-x86_64-unknown-linux-musl.tar.gz](https://github.com/j178/prek/releases/download/v0.3.4/prek-x86_64-unknown-linux-musl.tar.gz) | x64 MUSL Linux | [checksum](https://github.com/j178/prek/releases/download/v0.3.4/prek-x86_64-unknown-linux-musl.tar.gz.sha256) |
| [prek-arm-unknown-linux-musleabihf.tar.gz](https://github.com/j178/prek/releases/download/v0.3.4/prek-arm-unknown-linux-musleabihf.tar.gz) | ARMv6 MUSL Linux (Hardfloat) | [checksum](https://github.com/j178/prek/releases/download/v0.3.4/prek-arm-unknown-linux-musleabihf.tar.gz.sha256) |
| [prek-armv7-unknown-linux-musleabihf.tar.gz](https://github.com/j178/prek/releases/download/v0.3.4/prek-armv7-unknown-linux-musleabihf.tar.gz) | ARMv7 MUSL Linux | [checksum](https://github.com/j178/prek/releases/download/v0.3.4/prek-armv7-unknown-linux-musleabihf.tar.gz.sha256) |

## Verifying GitHub Artifact Attestations

The artifacts in this release have attestations generated with GitHub Artifact Attestations. These can be verified by using the [GitHub CLI](https://cli.github.com/manual/gh_attestation_verify):
```sh
gh attestation verify <file-path of downloaded artifact> --repo j178/prek
```

You can also download the attestation from [GitHub](https://github.com/j178/prek/attestations) and verify against that directly:
```sh
gh attestation verify <file-path of downloaded artifact> --bundle <file-path of downloaded attestation>
```