Support `prek sample-config --format toml` by j178 · Pull Request #1546 · j178/prek

j178 · 2026-02-03T10:10:22Z

Support prek sample-config --format toml

codecov · 2026-02-03T10:16:08Z

Codecov Report

❌ Patch coverage is 89.36170% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.60%. Comparing base (29b165c) to head (fbd2f2b).
⚠️ Report is 1 commits behind head on prektoml.

Files with missing lines	Patch %	Lines
crates/prek/src/cli/sample_config.rs	88.88%	4 Missing ⚠️
crates/prek/src/main.rs	80.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           prektoml    #1546      +/-   ##
============================================
- Coverage     91.61%   91.60%   -0.02%     
============================================
  Files            91       91              
  Lines         17981    18017      +36     
============================================
+ Hits          16474    16504      +30     
- Misses         1507     1513       +6

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Copilot

Pull request overview

This PR adds support for a --format flag to the prek sample-config command, allowing users to generate sample configurations in TOML format in addition to the existing YAML format.

Changes:

Added --format CLI argument with toml and yaml options to the sample-config command
Implemented TOML sample configuration that uses prek's builtin hooks
Updated cache dir command to use stdout_important() for better visibility in quiet mode

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
crates/prek/tests/sample_config.rs	Added comprehensive test coverage for TOML format support, including format detection, explicit format selection, and precedence rules; updated raw string delimiters for existing snapshots
crates/prek/src/main.rs	Wired the new `format` parameter to the sample_config command; changed cache dir output to use `stdout_important()`
crates/prek/src/cli/sample_config.rs	Implemented format detection from file extension, added TOML sample config constant, and updated function to handle format selection with proper precedence
crates/prek/src/cli/mod.rs	Added `SampleConfigFormat` enum and `format` field to `SampleConfigArgs`

crates/prek/src/main.rs

crates/prek/src/cli/sample_config.rs

prek-ci-bot · 2026-02-03T10:25:31Z

📦 Cargo Bloat Comparison

Binary size change: +0.00% (23.5 MiB → 23.5 MiB)

Expand for cargo-bloat output

Head Branch Results

 File  .text    Size             Crate Name
 0.3%   0.7% 71.9KiB             prek? <prek::cli::Command as clap_builder::derive::Subcommand>::augment_subcommands
 0.3%   0.7% 71.3KiB              prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.3%   0.7% 65.6KiB              prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.2%   0.5% 51.2KiB annotate_snippets annotate_snippets::renderer::render::render
 0.2%   0.5% 50.5KiB              prek prek::languages::<impl prek::config::Language>::install::{{closure}}
 0.2%   0.4% 43.7KiB              prek prek::run::{{closure}}
 0.2%   0.4% 43.4KiB              prek prek::identify::by_extension::{{closure}}
 0.2%   0.4% 41.8KiB              prek prek::cli::run::run::run::{{closure}}
 0.1%   0.3% 31.3KiB             prek? <prek::cli::RunArgs as clap_builder::derive::Args>::augment_args
 0.1%   0.3% 28.4KiB      serde_saphyr saphyr_parser_bw::scanner::Scanner<T>::fetch_more_tokens
 0.1%   0.2% 24.9KiB             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% 22.6KiB      serde_saphyr saphyr_parser_bw::scanner::Scanner<T>::fetch_more_tokens
 0.1%   0.2% 22.2KiB              prek prek::hooks::meta_hooks::MetaHooks::run::{{closure}}
 0.1%   0.2% 21.2KiB      clap_builder clap_builder::parser::parser::Parser::get_matches_with
 0.1%   0.2% 20.4KiB              prek prek::hooks::meta_hooks::MetaHooks::run::{{closure}}
 0.1%   0.2% 20.0KiB   cargo_metadata? <cargo_metadata::_::<impl serde_core::de::Deserialize for cargo_metadata::Package>::deserialize::__Visitor as serde_core::de::Visitor>::visit_map
 0.1%   0.2% 19.5KiB              prek prek::archive::unzip::{{closure}}
 0.1%   0.2% 19.5KiB              prek prek::cli::run::filter::collect_files_from_args::{{closure}}
 0.1%   0.2% 19.3KiB               std core::ptr::drop_in_place<prek::languages::<impl prek::config::Language>::install::{{closure}}>
 0.1%   0.2% 19.2KiB              prek <prek::languages::ruby::ruby::Ruby as prek::languages::LanguageImpl>::install::{{closure}}
38.2%  91.4%  9.0MiB                   And 20665 smaller methods. Use -n N to show more.
41.8% 100.0%  9.8MiB                   .text section size, the file size is 23.5MiB

Base Branch Results

 File  .text    Size             Crate Name
 0.4%   0.9% 86.8KiB             prek? <prek::cli::Command as clap_builder::derive::Subcommand>::augment_subcommands
 0.3%   0.7% 71.3KiB              prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.3%   0.7% 65.6KiB              prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.2%   0.5% 51.2KiB annotate_snippets annotate_snippets::renderer::render::render
 0.2%   0.5% 50.5KiB              prek prek::languages::<impl prek::config::Language>::install::{{closure}}
 0.2%   0.4% 43.6KiB              prek prek::run::{{closure}}
 0.2%   0.4% 43.4KiB              prek prek::identify::by_extension::{{closure}}
 0.2%   0.4% 41.5KiB              prek prek::cli::run::run::run::{{closure}}
 0.2%   0.4% 36.7KiB             prek? <prek::cli::RunArgs as clap_builder::derive::Args>::augment_args
 0.1%   0.3% 28.4KiB      serde_saphyr saphyr_parser_bw::scanner::Scanner<T>::fetch_more_tokens
 0.1%   0.2% 24.9KiB             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% 22.6KiB      serde_saphyr saphyr_parser_bw::scanner::Scanner<T>::fetch_more_tokens
 0.1%   0.2% 22.2KiB              prek prek::hooks::meta_hooks::MetaHooks::run::{{closure}}
 0.1%   0.2% 21.2KiB      clap_builder clap_builder::parser::parser::Parser::get_matches_with
 0.1%   0.2% 20.7KiB             prek? <prek::cli::GlobalArgs as clap_builder::derive::Args>::augment_args
 0.1%   0.2% 20.4KiB              prek prek::hooks::meta_hooks::MetaHooks::run::{{closure}}
 0.1%   0.2% 20.0KiB   cargo_metadata? <cargo_metadata::_::<impl serde_core::de::Deserialize for cargo_metadata::Package>::deserialize::__Visitor as serde_core::de::Visitor>::visit_map
 0.1%   0.2% 19.8KiB              prek prek::archive::unzip::{{closure}}
 0.1%   0.2% 19.5KiB     serde_saphyr? <serde_saphyr::de::YamlDeserializer as serde_core::de::Deserializer>::deserialize_any
 0.1%   0.2% 19.5KiB              prek prek::cli::run::filter::collect_files_from_args::{{closure}}
38.1%  91.2%  8.9MiB                   And 20622 smaller methods. Use -n N to show more.
41.8% 100.0%  9.8MiB                   .text section size, the file size is 23.5MiB

Support `prek sample-config --format toml`

Copilot AI review requested due to automatic review settings February 3, 2026 10:10

j178 added the enhancement New feature or request label Feb 3, 2026

Copilot started reviewing on behalf of j178 February 3, 2026 10:14 View session

Copilot AI reviewed Feb 3, 2026

View reviewed changes

crates/prek/src/main.rs Show resolved Hide resolved

crates/prek/src/cli/sample_config.rs Show resolved Hide resolved

j178 force-pushed the sample-config branch 2 times, most recently from 765f55e to 115ca7c Compare February 3, 2026 11:43

Support prek sample-config --format toml

fbd2f2b

Support `prek sample-config --format toml`

j178 force-pushed the sample-config branch from 115ca7c to fbd2f2b Compare February 3, 2026 11:54

j178 merged commit 1b49afe into prektoml Feb 3, 2026
49 checks passed

j178 deleted the sample-config branch February 3, 2026 13:36

j178 added a commit that referenced this pull request Feb 3, 2026

Support prek sample-config --format toml (#1546)

f083e88

Support `prek sample-config --format toml`

j178 added a commit that referenced this pull request Feb 4, 2026

Support prek sample-config --format toml (#1546)

68e6085

Support `prek sample-config --format toml`

j178 mentioned this pull request Feb 4, 2026

Add documentation about prek.toml #1560

Merged

j178 added a commit that referenced this pull request Feb 5, 2026

Support prek sample-config --format toml (#1546)

e0b8bb1

Support `prek sample-config --format toml`

j178 mentioned this pull request Feb 6, 2026

Tracking issue for prek.toml #1583

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Support `prek sample-config --format toml`#1546

Support `prek sample-config --format toml`#1546
j178 merged 1 commit intoprektomlfrom
sample-config

j178 commented Feb 3, 2026

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