Resolve Rust git cli: dependency installs by package name lookup

[Copilot]

Rust hooks with additional_dependencies like cli:https://...[:rev] can fail on repositories containing multiple binary packages because cargo install --git needs an explicit package selection. This change resolves the package from the hook entry binary and installs that package directly.

• Dependency parsing + package resolution

  • Added a shared parser for Rust cli: dependency strings (git URL + optional rev, or crate + optional version).
  • For git dependencies, clone the target repo/rev and use existing find_package_dir to map entry binary → owning package name.

• Cargo install invocation

  • Updated git dependency install args to pass the resolved package name to cargo install --git (instead of passing --bin).
  • Non-git cli: dependency behavior is unchanged.

• Focused test updates

  • Added unit coverage for dependency parsing behavior.
  • Added a focused async test for non-git package resolution short-circuit.
  • Updated CLI dependency argument-format tests to reflect package-based git installs.

// before (git cli dep)
cargo install --bins --root <env> --git https://github.com/fish-shell/fish-shell --tag 4.5.0 --bin fish_indent --locked

// now
cargo install --bins --root <env> --git https://github.com/fish-shell/fish-shell --tag 4.5.0 fish --locked

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• https://api.github.com/repos/fish-shell/fish-shell/commits/4.5.0
  • Triggering command: /home/REDACTED/.rustup/toolchains/stable-x86_64-REDACTED-linux-gnu/bin/cargo /home/REDACTED/.rustup/toolchains/stable-x86_64-REDACTED-linux-gnu/bin/cargo install --bins --root /home/REDACTED/.cache/prek/hooks/rust-AAocD40ReYOKrbqAn9pU --git REDACTED --tag 4.5.0 fish --locked relro jrqe�� ut86njw4vrlq8d4nhg.1iypvdb.rcgu.o v63463rj7jg9399o56.1iypvdb.rcgu.o /opt/pipx_bin/ginow -c core.autocrlf=fa-c -c git (http block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
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Original prompt

---

This section details on the original issue you should resolve

<issue_title>Unable to use additional_dependencies with Rust hooks in repos that have multiple binaries</issue_title>
<issue_description>### Summary

I'm trying to add a pre-commit hook for the latest fish_indent, as seen in the config below, but I get this error:

❯ prek install-hooks
error: Failed to install hook `fish_indent`
  caused by: Command `install cli dep` exited with an error:

[status]
exit status: 101

[stderr]
Updating git repository `https://github.com/fish-shell/fish-shell`
error: multiple packages with binaries found: fish, xtask. When installing a git repository, cargo will always search the entire repo for any Cargo.toml.
Please specify a package, e.g. `cargo install --git https://github.com/fish-shell/fish-shell fish`.

Willing to submit a PR?

• Yes — I’m willing to open a PR to fix this.

Platform

Darwin 24.6.0 arm64

Version

prek 0.3.3 (Homebrew 2026-02-15)

.pre-commit-config.yaml

repos:
  - repo: local
    hooks:
      - id: fish_indent
        name: fish_indent
        language: rust
        additional_dependencies:
          - cli:https://github.com/fish-shell/fish-shell:4.5.0
        entry: fish_indent
        args: [-w]
        files: .+\.fish

Log file

2026-02-21T04:31:40.253240Z DEBUG prek: 0.3.3 (Homebrew 2026-02-15)
2026-02-21T04:31:40.253301Z DEBUG Args: ["prek", "-vvv", "install-hooks"]
2026-02-21T04:31:40.264213Z TRACE get_root: close time.busy=10.8ms time.idle=54.2µs
2026-02-21T04:31:40.264253Z DEBUG Git root: /Users/andy/tmp/prek-rust-fish_indent
2026-02-21T04:31:40.264287Z DEBUG Found workspace root at `/Users/andy/tmp/prek-rust-fish_indent`
2026-02-21T04:31:40.264300Z TRACE Include selectors: ``
2026-02-21T04:31:40.264307Z TRACE Skip selectors: ``
2026-02-21T04:31:40.264412Z DEBUG discover{root="/Users/andy/tmp/prek-rust-fish_indent" config=None refresh=false}: Loaded workspace from cache
2026-02-21T04:31:40.264445Z DEBUG discover{root="/Users/andy/tmp/prek-rust-fish_indent" config=None refresh=false}: Loading project configuration path=.pre-commit-config.yaml
2026-02-21T04:31:40.265072Z TRACE discover{root="/Users/andy/tmp/prek-rust-fish_indent" config=None refresh=false}: close time.busy=736µs time.idle=12.2µs
2026-02-21T04:31:40.265281Z TRACE Checking lock resource="store" path=/Users/andy/.cache/prek/.lock
2026-02-21T04:31:40.265300Z DEBUG Acquired lock resource="store"
2026-02-21T04:31:40.266737Z TRACE Using system installed rustup at /Users/andy/.cargo/bin/rustup
2026-02-21T04:31:40.266840Z TRACE Checking lock resource="rustup" path=/Users/andy/.cache/prek/tools/rustup/.lock
2026-02-21T04:31:40.266853Z DEBUG Acquired lock resource="rustup"
2026-02-21T04:31:40.266881Z TRACE Executing `/Users/andy/.cargo/bin/rustup toolchain list -v`
2026-02-21T04:31:40.278184Z TRACE Executing `/Users/andy/.cargo/bin/rustup toolchain list -v`
2026-02-21T04:31:40.288828Z TRACE Executing `/Users/andy/.rustup/toolchains/stable-aarch64-apple-darwin/bin/rustc --version`
2026-02-21T04:31:40.289086Z TRACE Executing `/Users/andy/.rustup/toolchains/nightly-aarch64-apple-darwin/bin/rustc --version`
2026-02-21T04:31:40.306240Z TRACE Found matching system rust name=nightly-aarch64-apple-darwin
2026-02-21T04:31:40.306276Z TRACE Using system rust rust=/Users/andy/.rustup/toolchains/nightly-aarch64-apple-darwin@1.95.0-nightly
2026-02-21T04:31:40.306289Z TRACE Released lock path=/Users/andy/.cache/prek/tools/rustup/.lock
2026-02-21T04:31:40.306524Z TRACE Executing `/Users/andy/.rustup/toolchains/nightly-aarch64-apple-darwin/bin/cargo install --bins --root /Users/andy/.cache/prek/hooks/rust-To61QTPD8Vc5UN6OVBvK --git https://github.com/fish-shell/fish-shell [...]`
2026-02-21T04:31:40.599658Z TRACE Released lock path=/Users/andy/.cache/prek/.lock
```</issue_description>

## Comments on the Issue (you are @copilot in this section)

<comments>
</comments>

• Fixes Unable to use additional_dependencies with Rust hooks in repos that have multiple binaries #1682

---

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[j178]

@copilot I think we already use --bins in cargo install, isn't that collision with --bin?

[Copilot]

@copilot I think we already use --bins in cargo install, isn't that collision with --bin?

Good question. I verified this: Cargo accepts --bins together with --bin <name> (no flag conflict error). In this case, --bin is the key part for git repos with multiple packages/binaries because it gives Cargo a concrete target to resolve; --bins remains from the existing install invocation pattern.

[j178]

@copilot use find_package_dir to find the package for the binary in the entry, and pass the package name to the cargo install instead.

[Copilot]

@copilot use find_package_dir to find the package for the binary in the entry, and pass the package name to the cargo install instead.

Implemented in 91dcc4b: for git cli: dependencies we now resolve the package from the hook entry binary via find_package_dir and pass that package name to cargo install --git.