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Add prek run --no-fail-fast to override config file#1859

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support-no-fail-fast-cli-override
Mar 24, 2026
Merged

Add prek run --no-fail-fast to override config file#1859
j178 merged 1 commit into
masterfrom
support-no-fail-fast-cli-override

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@j178 j178 commented Mar 24, 2026

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@j178 j178 added the enhancement New feature or request label Mar 24, 2026
Copilot AI review requested due to automatic review settings March 24, 2026 09:37
@j178 j178 force-pushed the support-no-fail-fast-cli-override branch from 135f3dc to 6369058 Compare March 24, 2026 09:38
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Codecov Report

❌ Patch coverage is 92.30769% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 92.14%. Comparing base (e9307d9) to head (19ac7cf).
⚠️ Report is 1 commits behind head on master.

Files with missing lines Patch % Lines
crates/prek/src/cli/mod.rs 85.71% 1 Missing ⚠️
Additional details and impacted files 
@@            Coverage Diff             @@
##           master    #1859      +/-   ##
==========================================
- Coverage   92.17%   92.14%   -0.03%     
==========================================
  Files         108      108              
  Lines       21750    21757       +7     
==========================================
  Hits        20047    20047              
- Misses       1703     1710       +7

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Pull request overview

Adds support for overriding config-level fail_fast behavior from the CLI by introducing a --no-fail-fast flag and plumbing a tri-state fail_fast value through the run pipeline.

Changes:

  • Add hidden --no-fail-fast flag and a shared flag(yes, no) -> Option<bool> resolver to represent “unset/true/false”.
  • Update cli::run / hook running logic to accept Option<bool> and let CLI override config values.
  • Add an integration test asserting --no-fail-fast overrides fail_fast: true in config.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.

Show a summary per file
File Description
crates/prek/src/cli/mod.rs Adds --no-fail-fast and a helper to resolve paired boolean flags to Option<bool>.
crates/prek/src/cli/run/run.rs Switches fail_fast plumbing to Option<bool> and updates config/CLI precedence logic.
crates/prek/src/main.rs Wires RunArgs into cli::run using the new flag resolver.
crates/prek/src/cli/try_repo.rs Passes resolved fail_fast option through to cli::run for try-repo.
crates/prek/src/cli/hook_impl.rs Passes resolved fail_fast option through to cli::run for hook shims.
crates/prek/tests/run.rs Adds a test to validate --no-fail-fast overrides config-level fail_fast.

Comment thread crates/prek/src/cli/mod.rs
Comment thread crates/prek/src/cli/mod.rs Outdated
Comment thread crates/prek/src/cli/mod.rs
@j178 j178 force-pushed the support-no-fail-fast-cli-override branch from 6369058 to 19ac7cf Compare March 24, 2026 09:47
@prek-ci-bot

prek-ci-bot Bot commented Mar 24, 2026 •
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📦 Cargo Bloat Comparison

Binary size change: +0.00% (25.4 MiB → 25.4 MiB)

Expand for cargo-bloat output

Head Branch Results

 File  .text     Size             Crate Name
 1.3%   2.7% 332.0KiB        aws_lc_sys aws_lc_0_39_0_aes_gcm_encrypt_avx512
 1.3%   2.7% 332.0KiB        aws_lc_sys aws_lc_0_39_0_aes_gcm_decrypt_avx512
 0.3%   0.7%  82.5KiB              prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.3%   0.6%  75.8KiB              prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.3%   0.6%  69.0KiB             prek? <prek::cli::Command as clap_builder::derive::Subcommand>::augment_subcommands
 0.2%   0.5%  56.8KiB              prek prek::languages::<impl prek::config::Language>::install::{{closure}}
 0.2%   0.4%  51.0KiB annotate_snippets annotate_snippets::renderer::render::render
 0.2%   0.4%  47.4KiB              prek prek::run::{{closure}}
 0.2%   0.3%  42.3KiB              prek prek::cli::run::run::run::{{closure}}
 0.1%   0.3%  33.3KiB             prek? <prek::cli::RunArgs as clap_builder::derive::Args>::augment_args
 0.1%   0.2%  28.0KiB        aws_lc_sys aws_lc_0_39_0_edwards25519_scalarmuldouble_alt
 0.1%   0.2%  27.8KiB      serde_saphyr saphyr_parser_bw::scanner::Scanner<T>::fetch_more_tokens
 0.1%   0.2%  27.5KiB        aws_lc_sys aws_lc_0_39_0_edwards25519_scalarmuldouble
 0.1%   0.2%  26.8KiB              prek prek::cli::try_repo::try_repo::{{closure}}
 0.1%   0.2%  26.6KiB             prek? <prek::config::_::<impl serde_core::de::Deserialize for prek::config::Config>::deserialize::__Visitor as serde_core::de::Visitor>::visit_map
 0.1%   0.2%  24.2KiB               std core::ptr::drop_in_place<prek::languages::<impl prek::config::Language>::install::{{closure}}>
 0.1%   0.2%  23.0KiB              prek prek::hooks::meta_hooks::MetaHooks::run::{{closure}}
 0.1%   0.2%  22.4KiB      serde_saphyr saphyr_parser_bw::scanner::Scanner<T>::fetch_more_tokens
 0.1%   0.2%  22.3KiB         [Unknown] Lp384_montjscalarmul_alt_p384_montjadd
 0.1%   0.2%  21.7KiB              prek prek::workspace::Project::init_hooks::{{closure}}
41.5%  86.2%  10.5MiB                   And 23869 smaller methods. Use -n N to show more.
48.2% 100.0%  12.2MiB                   .text section size, the file size is 25.4MiB

Base Branch Results

 File  .text     Size             Crate Name
 1.3%   2.7% 332.0KiB        aws_lc_sys aws_lc_0_39_0_aes_gcm_encrypt_avx512
 1.3%   2.7% 332.0KiB        aws_lc_sys aws_lc_0_39_0_aes_gcm_decrypt_avx512
 0.3%   0.7%  82.5KiB              prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.3%   0.6%  75.8KiB              prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.3%   0.6%  71.2KiB             prek? <prek::cli::Command as clap_builder::derive::Subcommand>::augment_subcommands
 0.2%   0.5%  56.8KiB              prek prek::languages::<impl prek::config::Language>::install::{{closure}}
 0.2%   0.4%  51.0KiB annotate_snippets annotate_snippets::renderer::render::render
 0.2%   0.4%  46.0KiB              prek prek::run::{{closure}}
 0.2%   0.3%  42.2KiB              prek prek::cli::run::run::run::{{closure}}
 0.1%   0.3%  32.0KiB             prek? <prek::cli::RunArgs as clap_builder::derive::Args>::augment_args
 0.1%   0.2%  28.0KiB        aws_lc_sys aws_lc_0_39_0_edwards25519_scalarmuldouble_alt
 0.1%   0.2%  27.8KiB      serde_saphyr saphyr_parser_bw::scanner::Scanner<T>::fetch_more_tokens
 0.1%   0.2%  27.5KiB        aws_lc_sys aws_lc_0_39_0_edwards25519_scalarmuldouble
 0.1%   0.2%  26.6KiB             prek? <prek::config::_::<impl serde_core::de::Deserialize for prek::config::Config>::deserialize::__Visitor as serde_core::de::Visitor>::visit_map
 0.1%   0.2%  26.3KiB              prek prek::cli::try_repo::try_repo::{{closure}}
 0.1%   0.2%  24.2KiB               std core::ptr::drop_in_place<prek::languages::<impl prek::config::Language>::install::{{closure}}>
 0.1%   0.2%  23.0KiB              prek prek::hooks::meta_hooks::MetaHooks::run::{{closure}}
 0.1%   0.2%  22.4KiB      serde_saphyr saphyr_parser_bw::scanner::Scanner<T>::fetch_more_tokens
 0.1%   0.2%  22.3KiB         [Unknown] Lp384_montjscalarmul_alt_p384_montjadd
 0.1%   0.2%  21.7KiB              prek prek::workspace::Project::init_hooks::{{closure}}
41.5%  86.2%  10.5MiB                   And 23906 smaller methods. Use -n N to show more.
48.2% 100.0%  12.2MiB                   .text section size, the file size is 25.4MiB

@prek-ci-bot

prek-ci-bot Bot commented Mar 24, 2026 •
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⚡️ Hyperfine Benchmarks

Summary: 0 regressions, 0 improvements above the 10% threshold.

Environment
  • OS: Linux 6.14.0-1017-azure
  • CPU: 4 cores
  • prek version: prek 0.3.8+4 (ce8e8ef 2026-03-24)
  • Rust version: rustc 1.94.0 (4a4ef493e 2026-03-02)
  • Hyperfine version: hyperfine 1.20.0
CLI Commands

Benchmarking basic commands in the main repo:

prek --version

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base --version 2.4 ± 0.1 2.2 2.5 1.02 ± 0.04
prek-head --version 2.3 ± 0.0 2.2 2.5 1.00

prek list

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base list 8.9 ± 0.1 8.8 9.1 1.00 ± 0.03
prek-head list 8.9 ± 0.2 8.7 10.7 1.00

prek validate-config .pre-commit-config.yaml

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base validate-config .pre-commit-config.yaml 3.2 ± 0.0 3.1 3.3 1.00
prek-head validate-config .pre-commit-config.yaml 3.2 ± 0.1 3.1 3.8 1.01 ± 0.04

prek sample-config

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base sample-config 2.6 ± 0.1 2.6 3.0 1.00
prek-head sample-config 2.6 ± 0.0 2.5 2.7 1.00 ± 0.03
Cold vs Warm Runs

Comparing first run (cold) vs subsequent runs (warm cache):

prek run --all-files (cold - no cache)

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run --all-files 154.8 ± 2.1 151.6 159.8 1.00 ± 0.02
prek-head run --all-files 154.2 ± 2.4 151.5 158.9 1.00

prek run --all-files (warm - with cache)

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run --all-files 155.4 ± 1.9 150.5 158.8 1.00
prek-head run --all-files 156.2 ± 3.3 152.1 165.2 1.00 ± 0.02
Full Hook Suite

Running the builtin hook suite on the benchmark workspace:

prek run --all-files (full builtin hook suite)

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run --all-files 154.6 ± 2.7 149.8 161.6 1.00
prek-head run --all-files 159.2 ± 28.8 149.8 357.6 1.03 ± 0.19
Individual Hook Performance

Benchmarking each hook individually on the test repo:

prek run trailing-whitespace --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run trailing-whitespace --all-files 21.5 ± 0.3 20.9 21.9 1.00
prek-head run trailing-whitespace --all-files 21.8 ± 0.5 21.1 23.5 1.01 ± 0.03

prek run end-of-file-fixer --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run end-of-file-fixer --all-files 27.9 ± 1.7 25.3 31.7 1.00 ± 0.10
prek-head run end-of-file-fixer --all-files 27.9 ± 2.0 25.4 33.5 1.00

prek run check-json --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run check-json --all-files 13.0 ± 0.2 12.6 13.5 1.02 ± 0.04
prek-head run check-json --all-files 12.7 ± 0.4 11.8 13.4 1.00

prek run check-yaml --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run check-yaml --all-files 11.8 ± 0.3 11.5 12.9 1.01 ± 0.03
prek-head run check-yaml --all-files 11.7 ± 0.2 11.5 12.4 1.00

prek run check-toml --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run check-toml --all-files 12.1 ± 0.3 11.6 12.8 1.02 ± 0.03
prek-head run check-toml --all-files 11.9 ± 0.3 11.4 12.4 1.00

prek run check-xml --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run check-xml --all-files 12.1 ± 0.3 11.7 12.6 1.01 ± 0.04
prek-head run check-xml --all-files 12.0 ± 0.3 11.4 12.8 1.00

prek run detect-private-key --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run detect-private-key --all-files 18.3 ± 1.2 16.4 21.5 1.00
prek-head run detect-private-key --all-files 18.7 ± 1.1 16.6 21.4 1.02 ± 0.09

prek run fix-byte-order-marker --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run fix-byte-order-marker --all-files 24.0 ± 1.0 21.5 25.7 1.02 ± 0.08
prek-head run fix-byte-order-marker --all-files 23.5 ± 1.4 21.0 27.7 1.00
Installation Performance

Benchmarking hook installation (fast path hooks skip Python setup):

prek install-hooks (cold - no cache)

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base install-hooks 4.9 ± 0.1 4.8 5.1 1.02 ± 0.03
prek-head install-hooks 4.8 ± 0.1 4.7 4.9 1.00

prek install-hooks (warm - with cache)

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base install-hooks 4.8 ± 0.0 4.8 4.8 1.00
prek-head install-hooks 4.8 ± 0.0 4.8 4.9 1.00 ± 0.01
File Filtering/Scoping Performance

Testing different file selection modes:

prek run (staged files only)

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run 53.1 ± 1.4 50.9 56.6 1.01 ± 0.03
prek-head run 52.8 ± 1.0 51.6 55.4 1.00

prek run --files '*.json' (specific file type)

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run --files '*.json' 9.1 ± 0.2 8.9 9.6 1.02 ± 0.02
prek-head run --files '*.json' 9.0 ± 0.1 8.8 9.2 1.00
Workspace Discovery & Initialization

Benchmarking hook discovery and initialization overhead:

prek run --dry-run --all-files (measures init overhead)

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run --dry-run --all-files 13.8 ± 0.1 13.6 14.3 1.00
prek-head run --dry-run --all-files 14.0 ± 0.4 13.6 15.4 1.01 ± 0.03
Meta Hooks Performance

Benchmarking meta hooks separately:

prek run check-hooks-apply --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run check-hooks-apply --all-files 14.1 ± 0.1 14.0 14.3 1.00
prek-head run check-hooks-apply --all-files 14.1 ± 0.2 13.9 14.5 1.00 ± 0.01

prek run check-useless-excludes --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run check-useless-excludes --all-files 13.3 ± 0.7 12.4 14.1 1.07 ± 0.06
prek-head run check-useless-excludes --all-files 12.5 ± 0.1 12.3 12.6 1.00

prek run identity --all-files

Command Mean [ms] Min [ms] Max [ms] Relative
prek-base run identity --all-files 11.0 ± 0.1 10.8 11.3 1.00 ± 0.02
prek-head run identity --all-files 11.0 ± 0.1 10.8 11.2 1.00

@j178 j178 merged commit bf09a45 into master Mar 24, 2026
53 checks passed
@j178 j178 deleted the support-no-fail-fast-cli-override branch March 24, 2026 09:57
@BrewTestBot BrewTestBot mentioned this pull request Apr 13, 2026
Merged
tmeijn pushed a commit to tmeijn/dotfiles that referenced this pull request May 8, 2026
build(deps): update prek to v0.3.13
c03b3be 
This MR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [prek](https://github.com/j178/prek) | patch | `0.3.1` → `0.3.13` |

MR created with the help of [el-capitano/tools/renovate-bot](https://gitlab.com/el-capitano/tools/renovate-bot).

**Proposed changes to behavior should be submitted there as MRs.**

---

### Release Notes

<details>
<summary>j178/prek (prek)</summary>

### [`v0.3.13`](https://github.com/j178/prek/blob/HEAD/CHANGELOG.md#0313)

[Compare Source](j178/prek@v0.3.12...v0.3.13)

Released on 2026-05-06.

##### Bug fixes

- Respect hook filters for message files ([#&#8203;2049](j178/prek#2049))

##### Documentation

- Add Godot Engine to users in README ([#&#8203;2047](j178/prek#2047))

##### Contributors

- [@&#8203;j178](https://github.com/j178)
- [@&#8203;Calinou](https://github.com/Calinou)

### [`v0.3.12`](https://github.com/j178/prek/blob/HEAD/CHANGELOG.md#0312)

[Compare Source](j178/prek@v0.3.11...v0.3.12)

Released on 2026-05-05.

##### Highlights

`auto_update.cooldown_days` is now available in both the user-level global
config (`~/.config/prek/prek.toml` on Linux and macOS, or
`$XDG_CONFIG_HOME/prek/prek.toml` when set; `%APPDATA%\prek\prek.toml` on
Windows) and project config. Set a user default for `prek auto-update`, then
override it per project when a repository needs a different update cadence.

```toml
[auto_update]
cooldown_days = 7
```

##### Enhancements

- Add global auto-update cooldown config ([#&#8203;2041](j178/prek#2041))
- Add project auto-update cooldown config ([#&#8203;2044](j178/prek#2044))
- Support `language: dart` ([#&#8203;1146](j178/prek#1146))

##### Bug fixes

- Pass commit message file to workspace hooks ([#&#8203;2043](j178/prek#2043))
- Preserve non-UTF8 filenames from git ([#&#8203;2023](j178/prek#2023))
- ruby: put resolved Ruby's bin dir on `$PATH` for `gem` invocations ([#&#8203;2021](j178/prek#2021))

##### Documentation

- Update docs with the new logo and icon ([#&#8203;2025](j178/prek#2025))
- Point schema docs to SchemaStore ([#&#8203;2039](j178/prek#2039))

##### Contributors

- [@&#8203;j178](https://github.com/j178)
- [@&#8203;xiaoyanli-lyft](https://github.com/xiaoyanli-lyft)
- [@&#8203;Lutra-Fs](https://github.com/Lutra-Fs)

### [`v0.3.11`](https://github.com/j178/prek/blob/HEAD/CHANGELOG.md#0311)

[Compare Source](j178/prek@v0.3.10...v0.3.11)

Released on 2026-04-27.

##### Highlights

Hook entries now have an explicit `shell` option for shell snippets. Set
`shell: sh`, `bash`, `pwsh`, `powershell`, or `cmd` when an entry should be
evaluated by that shell; leaving it unset keeps prek's direct argv execution.

`prek auto-update` can now filter tag candidates before choosing an update.
Both options take glob patterns: use `--include-tag` to only consider matching
tag names, and `--exclude-tag` to skip matching tags such as moving tags or
prereleases.

##### Enhancements

- Add `auto-update --exclude-repo <repo>` to skip repos ([#&#8203;1983](j178/prek#1983))
- Add `auto-update --exit-code` to exit with non-zero on updates ([#&#8203;2002](j178/prek#2002))
- Add `auto-update --include-tag <pattern>`/`--exclude-tag <pattern>` to filter tags ([#&#8203;1984](j178/prek#1984))
- Adds an explicit `shell` hook option for entries that should run as shell source ([#&#8203;2004](j178/prek#2004))
- Make `--hook-dir` optional for hook-impl ([#&#8203;1989](j178/prek#1989))
- Skip shim warning when `--script-version` is missing ([#&#8203;1990](j178/prek#1990))

##### Bug fixes

- Install Ruby executable in gem bin ([#&#8203;2017](j178/prek#2017))
- Use dedicated Android npm package ([#&#8203;1982](j178/prek#1982))
- Use stable repo keys without breaking cached clones ([#&#8203;1995](j178/prek#1995))

##### Documentation

- Explain prek name ([#&#8203;1980](j178/prek#1980))
- Clarify `pass_filenames` concurrency docs ([#&#8203;1999](j178/prek#1999))
- Reorganize documentation references ([#&#8203;2005](j178/prek#2005))
- Clarify hook author manifest env docs ([#&#8203;1991](j178/prek#1991))
- docs: add Sentry to users list ([#&#8203;1981](j178/prek#1981))

##### Contributors

- [@&#8203;j178](https://github.com/j178)

### [`v0.3.10`](https://github.com/j178/prek/blob/HEAD/CHANGELOG.md#0310)

[Compare Source](j178/prek@v0.3.9...v0.3.10)

Released on 2026-04-21.

##### Enhancements

- Disallow rev for non-remote repos in schema ([#&#8203;1964](j178/prek#1964))
- Hide up-to-date output in non-verbose mode ([#&#8203;1942](j178/prek#1942))
- Improve merge conflict marker detection ([#&#8203;1937](j178/prek#1937))
- Keep finished hooks visible ([#&#8203;1967](j178/prek#1967))
- Preserve frozen comment spacing in auto-update ([#&#8203;1945](j178/prek#1945))
- Reimplement `@j178/prek` npm package ([#&#8203;1973](j178/prek#1973))

##### Bug fixes

- Prefer stable Rust toolchains ([#&#8203;1974](j178/prek#1974))

##### Documentation

- Add `SKILL.md` for prek ([#&#8203;1950](j178/prek#1950))
- Document `gh skill install j178/prek prek` to install prek skill for agents ([#&#8203;1951](j178/prek#1951))
- Improve compatibility and migration docs ([#&#8203;1940](j178/prek#1940))

##### Other changes

- Sync latest identify tags ([#&#8203;1947](j178/prek#1947))

##### Contributors

- [@&#8203;github-actions](https://github.com/github-actions)
- [@&#8203;renovate](https://github.com/renovate)
- [@&#8203;j178](https://github.com/j178)

### [`v0.3.9`](https://github.com/j178/prek/blob/HEAD/CHANGELOG.md#039)

[Compare Source](j178/prek@v0.3.8...v0.3.9)

Released on 2026-04-13.

##### Highlight

`prek auto-update` is now stricter about pinned revisions and more useful in CI.
It now keeps `rev` and `# frozen:` comments in sync, can detect
[impostor commits](https://docs.zizmor.sh/audits/#impostor-commit) when validating pinned SHAs,
and lets you use `prek auto-update --check` to fail on both available updates and frozen-ref
mismatches without rewriting the config.

Examples:

```console
$ prek auto-update

# updates revs and repairs stale `# frozen:` comments

$ prek auto-update --freeze

# writes frozen SHAs with matching `# frozen: <tag>` comments

$ prek auto-update --check

# exits non-zero when updates are available, a `# frozen:` comment is stale,
# or a pinned SHA does not belong to the fetched upstream refs
```

##### Enhancements

- Check and sync frozen comments during auto-update ([#&#8203;1896](j178/prek#1896))
- Handle impostor commits in auto-update ([#&#8203;1919](j178/prek#1919))
- Add experimental `language: dotnet` support ([#&#8203;1871](j178/prek#1871))
- Honor repo and worktree `core.hooksPath` ([#&#8203;1892](j178/prek#1892))
- Add `prek run --no-fail-fast` to override config file ([#&#8203;1859](j178/prek#1859))
- Add `forbid-new-submodules` as builtin hook ([#&#8203;1853](j178/prek#1853))
- Clean stale patch files in `cache gc` ([#&#8203;1877](j178/prek#1877))
- Display auto-update results by config entry ([#&#8203;1922](j178/prek#1922))
- Restrict patch directory permissions ([#&#8203;1876](j178/prek#1876))
- Show tag names in `auto-update --freeze` output ([#&#8203;1916](j178/prek#1916))
- Use a bitset for hook stages ([#&#8203;1860](j178/prek#1860))

##### Bug fixes

- Canonicalize CWD and GIT\_ROOT paths ([#&#8203;1878](j178/prek#1878))
- Ensure quotes are added for non-string revisions in `auto-update` ([#&#8203;1936](j178/prek#1936))

##### Documentation

- Update docs for case of hooks modifying files with a non-zero exit code ([#&#8203;1879](j178/prek#1879))

##### Contributors

- [@&#8203;RicardoVercetti](https://github.com/RicardoVercetti)
- [@&#8203;nathanjmcdougall](https://github.com/nathanjmcdougall)
- [@&#8203;renovate](https://github.com/renovate)
- [@&#8203;sadjow](https://github.com/sadjow)
- [@&#8203;j178](https://github.com/j178)

### [`v0.3.8`](https://github.com/j178/prek/blob/HEAD/CHANGELOG.md#038)

[Compare Source](j178/prek@v0.3.6...v0.3.8)

Released on 2026-03-23.

##### Enhancements

- Add experimental `language: deno` support ([#&#8203;1516](j178/prek#1516))
- Add `pretty-format-json` as builtin hook ([#&#8203;915](j178/prek#915))
- Add `check-vcs-permalinks` as builtin hook ([#&#8203;1842](j178/prek#1842))
- Add `check-illegal-windows-names` as builtin hook ([#&#8203;1841](j178/prek#1841))
- Add `check-shebang-scripts-are-executable` builtin hook ([#&#8203;1847](j178/prek#1847))
- Add `destroyed-symlinks` builtin hook ([#&#8203;1851](j178/prek#1851))
- Add `file-contents-sorter` as builtin hook ([#&#8203;1846](j178/prek#1846))
- Add `--all` flag to `prek uninstall` ([#&#8203;1817](j178/prek#1817))
- Improve file pattern parse errors ([#&#8203;1829](j178/prek#1829))
- Validate `uv` binary after download ([#&#8203;1825](j178/prek#1825))

##### Bug fixes

- Fix workspace-relative added file paths ([#&#8203;1852](j178/prek#1852))
- Relax alias-anchor ratio check for check-yaml ([#&#8203;1839](j178/prek#1839))

##### Contributors

- [@&#8203;j178](https://github.com/j178)
- [@&#8203;shaanmajid](https://github.com/shaanmajid)
- [@&#8203;mvanhorn](https://github.com/mvanhorn)
- [@&#8203;feliblo](https://github.com/feliblo)
- [@&#8203;Tiryoh](https://github.com/Tiryoh)

### [`v0.3.6`](https://github.com/j178/prek/blob/HEAD/CHANGELOG.md#036)

[Compare Source](j178/prek@v0.3.5...v0.3.6)

Released on 2026-03-16.

##### Enhancements

- Allow selectors for hook ids containing colons ([#&#8203;1782](j178/prek#1782))
- Rename `prek install-hooks` to `prek prepare-hooks` and `prek install --install-hooks` to `prek install --prepare-hooks` ([#&#8203;1766](j178/prek#1766))
- Retry auth-failed repo clones with terminal prompts enabled ([#&#8203;1761](j178/prek#1761))

##### Performance

- Optimize `detect_private_key` by chunked reading and using aho-corasick ([#&#8203;1791](j178/prek#1791))
- Optimize `fix_byte_order_marker` by shifting file contents in place ([#&#8203;1790](j178/prek#1790))

##### Bug fixes

- Align stage defaulting behavior with pre-commit ([#&#8203;1788](j178/prek#1788))
- Make sure child output is drained in the PTY subprocess ([#&#8203;1768](j178/prek#1768))
- fix(golang): use `GOTOOLCHAIN=local` when probing system go ([#&#8203;1797](j178/prek#1797))

##### Documentation

- Disambiguate “hook” terminology by renaming "Git hooks" to "Git shims" ([#&#8203;1776](j178/prek#1776))
- Document compatibility with pre-commit ([#&#8203;1767](j178/prek#1767))
- Update configuration.md with TOML 1.1 notes ([#&#8203;1764](j178/prek#1764))

##### Other changes

- Sync latest identify tags ([#&#8203;1798](j178/prek#1798))

##### Contributors

- [@&#8203;github-actions](https://github.com/github-actions)
- [@&#8203;j178](https://github.com/j178)
- [@&#8203;pcastellazzi](https://github.com/pcastellazzi)
- [@&#8203;deadnews](https://github.com/deadnews)
- [@&#8203;copilot-swe-agent](https://github.com/copilot-swe-agent)

### [`v0.3.5`](https://github.com/j178/prek/blob/HEAD/CHANGELOG.md#035)

[Compare Source](j178/prek@v0.3.4...v0.3.5)

Released on 2026-03-09.

##### Enhancements

- Add automatic Ruby download support using rv binaries ([#&#8203;1668](j178/prek#1668))
- Adjust open file limit on process startup ([#&#8203;1705](j178/prek#1705))
- Allow parallel gem retry ([#&#8203;1732](j178/prek#1732))
- Enable system-proxy feature on reqwest ([#&#8203;1738](j178/prek#1738))
- Expose `--git-dir` to force hook installation target ([#&#8203;1723](j178/prek#1723))
- Pass `--quiet`, `--verbose`, and `--no-progress` through `prek install` into generated hook scripts ([#&#8203;1753](j178/prek#1753))
- Respect `core.sharedRepository` for hook permissions ([#&#8203;1755](j178/prek#1755))
- Support legacy mode hook script ([#&#8203;1706](j178/prek#1706))
- rust: support `cli:` git dependency 4th segment package disambiguation ([#&#8203;1747](j178/prek#1747))

##### Bug fixes

- Fix Python `__main__.py` entry ([#&#8203;1741](j178/prek#1741))
- python: strip `UV_SYSTEM_PYTHON` from `uv venv` and `pip install` commands ([#&#8203;1756](j178/prek#1756))

##### Other changes

- Sync latest identify tags ([#&#8203;1733](j178/prek#1733))

##### Contributors

- [@&#8203;Dev-iL](https://github.com/Dev-iL)
- [@&#8203;tennox](https://github.com/tennox)
- [@&#8203;shaanmajid](https://github.com/shaanmajid)
- [@&#8203;is-alnilam](https://github.com/is-alnilam)
- [@&#8203;github-actions](https://github.com/github-actions)
- [@&#8203;j178](https://github.com/j178)

### [`v0.3.4`](https://github.com/j178/prek/blob/HEAD/CHANGELOG.md#034)

[Compare Source](j178/prek@v0.3.3...v0.3.4)

Released on 2026-02-28.

##### Enhancements

- Allow `pass_filenames` to accept a positive integer ([#&#8203;1698](j178/prek#1698))
- Install and compile gems in parallel ([#&#8203;1674](j178/prek#1674))
- Sync identify file-type mappings with pre-commit identify ([#&#8203;1660](j178/prek#1660))
- Use `--locked` for Rust `cargo install` commands ([#&#8203;1661](j178/prek#1661))
- Add `PREK_MAX_CONCURRENCY` environment variable for configuring maximum concurrency ([#&#8203;1697](j178/prek#1697))
- Add `PREK_LOG_TRUNCATE_LIMIT` environment variable for configuring log truncation ([#&#8203;1679](j178/prek#1679))
- Add support for `python -m prek` ([#&#8203;1686](j178/prek#1686))

##### Bug fixes

- Skip invalid Rust toolchains instead of failing ([#&#8203;1699](j178/prek#1699))

##### Performance

- Bitset-based TagSet refactor: precompute tag masks and speed up hook type filtering ([#&#8203;1665](j178/prek#1665))

##### Documentation

- Document `winget install j178.Prek` ([#&#8203;1670](j178/prek#1670))

##### Contributors

- [@&#8203;uplsh580](https://github.com/uplsh580)
- [@&#8203;Svecco](https://github.com/Svecco)
- [@&#8203;dbast](https://github.com/dbast)
- [@&#8203;drichardson](https://github.com/drichardson)
- [@&#8203;JP-Ellis](https://github.com/JP-Ellis)
- [@&#8203;j178](https://github.com/j178)
- [@&#8203;is-alnilam](https://github.com/is-alnilam)
- [@&#8203;copilot-swe-agent](https://github.com/copilot-swe-agent)

### [`v0.3.3`](https://github.com/j178/prek/blob/HEAD/CHANGELOG.md#033)

[Compare Source](j178/prek@v0.3.2...v0.3.3)

Released on 2026-02-15.

##### Enhancements

- Read Python version specifier from hook repo `pyproject.toml` ([#&#8203;1596](j178/prek#1596))
- Add `#:schema` directives to generated prek.toml ([#&#8203;1597](j178/prek#1597))
- Add `prek util list-builtins` command ([#&#8203;1600](j178/prek#1600))
- Expand install source detection to `mise`, `uv tool`, `pipx`, and `asdf` ([#&#8203;1605](j178/prek#1605), [#&#8203;1607](j178/prek#1607))
- Add progress bar to `cache clean` and show removal summary ([#&#8203;1616](j178/prek#1616))
- Make `yaml-to-toml` CONFIG argument optional ([#&#8203;1593](j178/prek#1593))
- `prek uninstall` removes legacy scripts too ([#&#8203;1622](j178/prek#1622))

##### Bug fixes

- Fix underflow when formatting summary output ([#&#8203;1626](j178/prek#1626))
- Match `files/exclude` filter against relative path of nested project ([#&#8203;1624](j178/prek#1624))
- Select `musllinux` wheel tag for uv on musl-based distros ([#&#8203;1628](j178/prek#1628))

##### Documentation

- Clarify `prek list` description ([#&#8203;1604](j178/prek#1604))

##### Contributors

- [@&#8203;ichoosetoaccept](https://github.com/ichoosetoaccept)
- [@&#8203;shaanmajid](https://github.com/shaanmajid)
- [@&#8203;soraxas](https://github.com/soraxas)
- [@&#8203;9999years](https://github.com/9999years)
- [@&#8203;j178](https://github.com/j178)

### [`v0.3.2`](https://github.com/j178/prek/blob/HEAD/CHANGELOG.md#032)

[Compare Source](j178/prek@v0.3.1...v0.3.2)

Released on 2026-02-06.

##### Highlights

- **`prek.toml` is here!**

  You can now use `prek.toml` as an alternative to `.pre-commit-config.yaml` for configuring prek. `prek.toml` mirrors the structure of `.pre-commit-config.yaml`, but TOML is less error-prone. Your existing `.pre-commit-config.yaml` will continue to work, but for new users and new projects, `prek.toml` may make more sense. If you want to switch, run `prek util yaml-to-toml` to convert YAML configs to `prek.toml`. See [configuration docs](configuration.md) for details.

  For example, this config:

  ```yaml
  repos:
    - repo: https://github.com/pre-commit/pre-commit-hooks
      rev: v6.0.0
      hooks:
        - id: check-yaml
  ```

  Can be written as `prek.toml` like this:

  ```toml
  [[repos]]
  repo = "https://github.com/pre-commit/pre-commit-hooks"
  rev = "v6.0.0"
  hooks = [ { id = "check-yaml" } ]
  ```

- **`serde-yaml` has been replaced with `serde-saphyr`**

  We replaced the long-deprecated `serde-yaml` crate with [`serde-saphyr`](https://crates.io/crates/serde-saphyr) for YAML parsing. It is written in safe Rust and has better error messages, performance, and security. This lets us provide precise location information for configuration parsing errors, which should make it easier to fix config issues.

  For example, this invalid config:

  ```yaml
  repos:
    - repo: https://github.com/crate-ci/typos
      hooks:
        - id: typos
  ```

  Before:

  ```console
  $ prek run
  error: Failed to parse `.pre-commit-config.yaml`
    caused by: Invalid remote repo: missing field `rev`
  ```

  Now:

  ```console
  $ prek run
  error: Failed to parse `.pre-commit-config.yaml`
  caused by: error: line 2 column 5: missing field `rev` at line 2, column 5
  --> <input>:2:5
    |
  1 | repos:
  2 |   - repo: https://github.com/crate-ci/typos
    |     ^ missing field `rev` at line 2, column 5
  3 |     hooks:
  4 |       - id: typos
    |
  ```

- **`prek util` subcommands**

  We added a new `prek util` top-level command for miscellaneous utilities that don't fit into other categories. The first two utilities are:

  - `prek util identify`: shows the identification tags of files that prek uses for file filtering, which can be useful for debugging and writing `types/types_or/exclude_types` filters.
  - `prek util yaml-to-toml`: converts `.pre-commit-config.yaml` to `prek.toml`.

  We also moved `prek init-template-dir` under `prek util` for better organization. The old `prek init-template-dir` command is still available (hidden) as an alias for backward compatibility.

##### Enhancements

- Add `prek util identify` subcommand ([#&#8203;1554](j178/prek#1554))
- Add `prek util yaml-to-toml` to convert `.pre-commit-config.yaml` to `prek.toml` ([#&#8203;1584](j178/prek#1584))
- Detect install source for actionable upgrade hints ([#&#8203;1540](j178/prek#1540))
- Detect prek installed by the standalone installer ([#&#8203;1545](j178/prek#1545))
- Implement `serialize_yaml_scalar` using `serde-saphyr` ([#&#8203;1534](j178/prek#1534))
- Improve max cli arguments length calculation ([#&#8203;1518](j178/prek#1518))
- Move `identify` and `init-template-dir` under the `prek util` top-level command ([#&#8203;1574](j178/prek#1574))
- Replace serde-yaml with serde-saphyr (again) ([#&#8203;1520](j178/prek#1520))
- Show precise location for config parsing error ([#&#8203;1530](j178/prek#1530))
- Support `Julia` language ([#&#8203;1519](j178/prek#1519))
- Support `prek.toml` ([#&#8203;1271](j178/prek#1271))
- Added `PREK_QUIET` environment variable support ([#&#8203;1513](j178/prek#1513))
- Remove upper bound constraint of uv version ([#&#8203;1588](j178/prek#1588))

##### Bug fixes

- Do not make the child a session leader ([#&#8203;1586](j178/prek#1586))
- Fix FilePattern schema to accept plain strings ([#&#8203;1564](j178/prek#1564))
- Use semver fallback sort when tag timestamps are equal ([#&#8203;1579](j178/prek#1579))

##### Documentation

- Add `OpenClaw` to the list of users ([#&#8203;1517](j178/prek#1517))
- Add `cachix/devenv`, `apache/lucene`, `copper-project/copper-rs` as projects using prek ([#&#8203;1531](j178/prek#1531), [#&#8203;1514](j178/prek#1514), [#&#8203;1569](j178/prek#1569))
- Add document about authoring remote hooks ([#&#8203;1571](j178/prek#1571))
- Add `llms.txt` generation for LLM-friendly documentation ([#&#8203;1553](j178/prek#1553))
- Document using `--refresh` to pick up `.prekignore` changes ([#&#8203;1575](j178/prek#1575))
- Fix PowerShell completion instruction syntax ([#&#8203;1568](j178/prek#1568))
- Update quick start to use `prek.toml` ([#&#8203;1576](j178/prek#1576))

##### Other changes

- Include `prek.toml` in run hint for config filename ([#&#8203;1578](j178/prek#1578))

##### Contributors

- [@&#8203;fatelei](https://github.com/fatelei)
- [@&#8203;domenkozar](https://github.com/domenkozar)
- [@&#8203;makeecat](https://github.com/makeecat)
- [@&#8203;fllesser](https://github.com/fllesser)
- [@&#8203;j178](https://github.com/j178)
- [@&#8203;copilot-swe-agent](https://github.com/copilot-swe-agent)
- [@&#8203;oopscompiled](https://github.com/oopscompiled)
- [@&#8203;rmuir](https://github.com/rmuir)
- [@&#8203;shaanmajid](https://github.com/shaanmajid)

</details>

---

### Configuration

📅 **Schedule**: (UTC)

- Branch creation
  - At any time (no schedule defined)
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  - At any time (no schedule defined)

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox.

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---

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