feat(auto-update): --cooldown-days flag (default: 1)

[lmmx]

• As discussed in Feature request - cooldown period on autoupdate #1152
• Default cooldown: 1 day, secure by default
• Minimum cooldown: 0 days (no cooldown), making it opt-out
• Maximum cooldown: 255 days (u8::MAX), this is more than is typical (Dependabot's is 90 days).
  • No particular handling exists (yet?) for users attempting to put an excessive/invalid number of days

It works 🎉

• I ensured the existing tests will still work by passing cooldown as 0 days.

Demo

If I rewind the crate-ci/typos hook in the prek repo itself to the last tagged release before 1.40

• v1.40.0 of the typos hook was released on 2025-11-26, 5½ days ago from today 2025-12-02

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 82ee65a..80e9539 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -15,7 +15,7 @@ repos:
         exclude: docs/cli.md # Exclude generated doc
 
   - repo: https://github.com/crate-ci/typos
-    rev: v1.40.0
+    rev: v1.39.0
     hooks:
       - id: typos

• 7 day cooldown would mean it had another day to cool off
• 6 day cooldown would mean it would be ready today (at the exact hour)
  • The exact time was 8:26PM GMT, current time is 11:55AM GMT (so it would still be cooling off)
• 5 day cooldown would mean it would have been ready yesterday (so will definitely update)

louis 🌟 ~/dev/prek $ prek auto-update --cooldown-days 7
[https://github.com/crate-ci/typos] already up to date
[https://github.com/pre-commit/pre-commit-hooks] already up to date
louis 🌟 ~/dev/prek $ prek auto-update --cooldown-days 6
[https://github.com/crate-ci/typos] already up to date
[https://github.com/pre-commit/pre-commit-hooks] already up to date
louis 🌟 ~/dev/prek $ prek auto-update --cooldown-days 5
[https://github.com/crate-ci/typos] updating v1.39.0 -> v1.40.0
[https://github.com/pre-commit/pre-commit-hooks] already up to date

[codecov]

Codecov Report

❌ Patch coverage is 91.61677% with 28 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.77%. Comparing base (b5be7c6) to head (853c728).
⚠️ Report is 7 commits behind head on master.

Files with missing lines	Patch %	Lines
src/cli/auto_update.rs	91.41%	28 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1172      +/-   ##
==========================================
+ Coverage   89.73%   89.77%   +0.03%     
==========================================
  Files          78       78              
  Lines       14767    15077     +310     
==========================================
+ Hits        13251    13535     +284     
- Misses       1516     1542      +26     

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[github-actions]

📦 Cargo Bloat Comparison

Binary size change: +0.00% (16.7 MiB → 16.7 MiB)

Expand for cargo-bloat output

Head Branch Results

 File  .text     Size          Crate Name
 0.6%   1.3% 106.7KiB          prek? <prek::cli::Command as clap_builder::derive::Subcommand>::augment_subcommands
 0.6%   1.3% 100.4KiB           prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.3%   0.7%  54.6KiB           prek prek::archive::unpack::{{closure}}
 0.3%   0.7%  53.0KiB             h2 h2::proto::connection::Connection<T,P,B>::poll
 0.3%   0.6%  48.6KiB           prek prek::run::{{closure}}
 0.2%   0.5%  40.0KiB           prek prek::languages::<impl prek::config::Language>::install::{{closure}}
 0.2%   0.5%  39.2KiB          prek? <prek::cli::RunArgs as clap_builder::derive::Args>::augment_args
 0.2%   0.5%  37.3KiB regex_automata regex_automata::meta::strategy::new
 0.2%   0.4%  35.2KiB           prek prek::workspace::Workspace::discover
 0.2%   0.4%  31.4KiB           std? <core::marker::PhantomData<T> as serde_core::de::DeserializeSeed>::deserialize
 0.2%   0.4%  30.1KiB           prek prek::cli::run::run::run::{{closure}}
 0.2%   0.4%  28.8KiB           prek prek::languages::node::installer::NodeInstaller::install::{{closure}}
 0.2%   0.4%  28.1KiB             h2 h2::proto::connection::DynConnection<B>::recv_frame
 0.2%   0.3%  27.6KiB           prek prek::identify::by_extension::{{closure}}
 0.1%   0.3%  25.1KiB           prek prek::main
 0.1%   0.3%  24.4KiB     hyper_util hyper_util::client::legacy::client::Client<C,B>::send_request::{{closure}}
 0.1%   0.3%  24.4KiB           std? <core::marker::PhantomData<T> as serde_core::de::DeserializeSeed>::deserialize
 0.1%   0.3%  24.3KiB     hyper_util hyper_util::client::legacy::client::Client<C,B>::connect_to::{{closure}}::{{closure}}::{{closure}}
 0.1%   0.3%  24.2KiB           prek prek::hook::HookBuilder::build::{{closure}}
 0.1%   0.3%  23.9KiB          hyper hyper::proto::h1::dispatch::Dispatcher<D,Bs,I,T>::poll_loop
41.2%  88.8%   6.9MiB                And 10645 smaller methods. Use -n N to show more.
46.3% 100.0%   7.7MiB                .text section size, the file size is 16.7MiB

Base Branch Results

 File  .text     Size          Crate Name
 0.6%   1.3% 104.8KiB          prek? <prek::cli::Command as clap_builder::derive::Subcommand>::augment_subcommands
 0.6%   1.3% 100.4KiB           prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.3%   0.7%  54.6KiB           prek prek::archive::unpack::{{closure}}
 0.3%   0.7%  53.0KiB             h2 h2::proto::connection::Connection<T,P,B>::poll
 0.3%   0.6%  48.6KiB           prek prek::run::{{closure}}
 0.2%   0.5%  40.0KiB           prek prek::languages::<impl prek::config::Language>::install::{{closure}}
 0.2%   0.5%  39.2KiB          prek? <prek::cli::RunArgs as clap_builder::derive::Args>::augment_args
 0.2%   0.5%  37.3KiB regex_automata regex_automata::meta::strategy::new
 0.2%   0.4%  35.2KiB           prek prek::workspace::Workspace::discover
 0.2%   0.4%  31.4KiB           std? <core::marker::PhantomData<T> as serde_core::de::DeserializeSeed>::deserialize
 0.2%   0.4%  30.1KiB           prek prek::cli::run::run::run::{{closure}}
 0.2%   0.4%  28.8KiB           prek prek::languages::node::installer::NodeInstaller::install::{{closure}}
 0.2%   0.4%  28.1KiB             h2 h2::proto::connection::DynConnection<B>::recv_frame
 0.2%   0.3%  27.6KiB           prek prek::identify::by_extension::{{closure}}
 0.1%   0.3%  25.1KiB           prek prek::main
 0.1%   0.3%  24.4KiB     hyper_util hyper_util::client::legacy::client::Client<C,B>::send_request::{{closure}}
 0.1%   0.3%  24.4KiB           std? <core::marker::PhantomData<T> as serde_core::de::DeserializeSeed>::deserialize
 0.1%   0.3%  24.3KiB     hyper_util hyper_util::client::legacy::client::Client<C,B>::connect_to::{{closure}}::{{closure}}::{{closure}}
 0.1%   0.3%  24.2KiB           prek prek::hook::HookBuilder::build::{{closure}}
 0.1%   0.3%  23.9KiB          hyper hyper::proto::h1::dispatch::Dispatcher<D,Bs,I,T>::poll_loop
41.1%  88.8%   6.8MiB                And 10633 smaller methods. Use -n N to show more.
46.3% 100.0%   7.7MiB                .text section size, the file size is 16.7MiB