Extract go version constraint from go.mod

[j178]

Closes #987

[codecov]

Codecov Report

❌ Patch coverage is 94.25287% with 15 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.99%. Comparing base (f10484a) to head (974384b).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
crates/prek/src/languages/golang/gomod.rs	92.09%	14 Missing ⚠️
crates/prek/src/languages/golang/version.rs	98.78%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1457      +/-   ##
==========================================
+ Coverage   90.87%   90.99%   +0.11%     
==========================================
  Files          86       86              
  Lines       17924    18182     +258     
==========================================
+ Hits        16289    16545     +256     
- Misses       1635     1637       +2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[github-actions]

📦 Cargo Bloat Comparison

Binary size change: +0.00% (22.8 MiB → 22.8 MiB)

Expand for cargo-bloat output

Head Branch Results

 File  .text    Size        Crate Name
 0.3%   0.8% 72.5KiB        prek? <prek::cli::Command as clap_builder::derive::Subcommand>::augment_subcommands
 0.2%   0.6% 58.0KiB         prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.2%   0.6% 53.0KiB         prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.2%   0.5% 46.3KiB         prek prek::run::{{closure}}
 0.2%   0.5% 43.6KiB         prek prek::cli::run::run::run::{{closure}}
 0.2%   0.5% 42.7KiB         prek prek::identify::by_extension::{{closure}}
 0.2%   0.4% 36.5KiB         prek prek::languages::<impl prek::config::Language>::install::{{closure}}
 0.1%   0.3% 32.0KiB        prek? <prek::cli::RunArgs as clap_builder::derive::Args>::augment_args
 0.1%   0.3% 30.0KiB  serde_json? <&mut serde_json::de::Deserializer<R> as serde_core::de::Deserializer>::deserialize_struct
 0.1%   0.2% 22.3KiB         prek prek::hooks::meta_hooks::MetaHooks::run::{{closure}}
 0.1%   0.2% 22.0KiB         prek prek::hooks::meta_hooks::MetaHooks::run::{{closure}}
 0.1%   0.2% 21.5KiB         prek prek::archive::unzip::{{closure}}
 0.1%   0.2% 21.3KiB clap_builder clap_builder::parser::parser::Parser::get_matches_with
 0.1%   0.2% 20.0KiB         prek prek::cli::run::filter::collect_files_from_args::{{closure}}
 0.1%   0.2% 19.7KiB         prek prek::cli::run::filter::collect_files_from_args::{{closure}}
 0.1%   0.2% 19.6KiB         prek <prek::languages::ruby::ruby::Ruby as prek::languages::LanguageImpl>::install::{{closure}}
 0.1%   0.2% 18.8KiB         prek prek::hook::HookBuilder::build::{{closure}}
 0.1%   0.2% 18.8KiB         prek prek::hook::HookBuilder::build::{{closure}}
 0.1%   0.2% 18.8KiB         prek prek::hook::HookBuilder::build::{{closure}}
 0.1%   0.2% 18.6KiB         ring ring_core_0_17_14__x25519_ge_frombytes_vartime
36.9%  91.6%  8.4MiB              And 20036 smaller methods. Use -n N to show more.
40.3% 100.0%  9.2MiB              .text section size, the file size is 22.8MiB

Base Branch Results

 File  .text    Size        Crate Name
 0.3%   0.8% 72.5KiB        prek? <prek::cli::Command as clap_builder::derive::Subcommand>::augment_subcommands
 0.2%   0.6% 58.0KiB         prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.2%   0.6% 53.0KiB         prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.2%   0.5% 46.3KiB         prek prek::run::{{closure}}
 0.2%   0.5% 43.8KiB         prek prek::cli::run::run::run::{{closure}}
 0.2%   0.5% 42.7KiB         prek prek::identify::by_extension::{{closure}}
 0.2%   0.4% 36.5KiB         prek prek::languages::<impl prek::config::Language>::install::{{closure}}
 0.1%   0.3% 32.0KiB        prek? <prek::cli::RunArgs as clap_builder::derive::Args>::augment_args
 0.1%   0.3% 30.0KiB  serde_json? <&mut serde_json::de::Deserializer<R> as serde_core::de::Deserializer>::deserialize_struct
 0.1%   0.2% 22.3KiB         prek prek::hooks::meta_hooks::MetaHooks::run::{{closure}}
 0.1%   0.2% 22.0KiB         prek prek::hooks::meta_hooks::MetaHooks::run::{{closure}}
 0.1%   0.2% 21.3KiB clap_builder clap_builder::parser::parser::Parser::get_matches_with
 0.1%   0.2% 21.2KiB         prek prek::archive::unzip::{{closure}}
 0.1%   0.2% 20.0KiB         prek prek::cli::run::filter::collect_files_from_args::{{closure}}
 0.1%   0.2% 19.6KiB         prek prek::cli::run::filter::collect_files_from_args::{{closure}}
 0.1%   0.2% 19.6KiB         prek <prek::languages::ruby::ruby::Ruby as prek::languages::LanguageImpl>::install::{{closure}}
 0.1%   0.2% 18.6KiB         ring ring_core_0_17_14__x25519_ge_frombytes_vartime
 0.1%   0.2% 18.2KiB         prek prek::cli::run::filter::collect_files_from_args::{{closure}}
 0.1%   0.2% 18.2KiB   hyper_util hyper_util::client::legacy::client::Client<C,B>::send_request::{{closure}}
 0.1%   0.2% 18.1KiB    [Unknown] fe_loose_invert
36.9%  91.6%  8.4MiB              And 20046 smaller methods. Use -n N to show more.
40.3% 100.0%  9.2MiB              .text section size, the file size is 22.8MiB

[Copilot]

Pull request overview

This PR implements automatic extraction of Go version constraints from go.mod files for remote hooks, addressing issue #987. Previously, users had to manually specify language_version for Go hooks when the remote hook required a specific Go version; now prek automatically reads the go or toolchain directives from the remote hook's go.mod file.

Changes:

• Implemented go.mod parsing to extract go and toolchain directives
• Added version normalization to convert Go versions (e.g., "1.23") to semver ranges (e.g., ">= 1.23.0")
• Enhanced error messages in the Go installer to include the version constraint being resolved
• Added Display implementation for GoRequest to support better error messages
• Added comprehensive unit tests for parsing, normalization, and Display implementation
• Added integration test verifying the end-to-end flow with an unrealistic version

Reviewed changes

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

File	Description
crates/prek/src/languages/golang/gomod.rs	Implements parsing of go.mod files to extract go and toolchain directives, version normalization, and integration with hook metadata extraction
crates/prek/src/languages/golang/version.rs	Adds Display implementation for GoRequest enum and comprehensive unit tests for parsing, matching, and display functionality
crates/prek/src/languages/golang/installer.rs	Improves error messages to include the version constraint being resolved
crates/prek/tests/languages/golang.rs	Adds integration test verifying automatic version extraction from remote hook's go.mod file