fix(ruby): include build source options in lock identity

[risu729]

Summary

• include Ruby compile/precompiled/source-build inputs in lock identity
• include ruby-build/ruby-install source and option choices that can change compiled output
• add regression coverage for precompiled, experimental-default, source-build, fallback, and ruby-install paths

Classification

Mixed actual lock/install identity and stale-lock invalidation fix.

Actual identity: source-build settings such as installer choice, build repositories, build options, and patch inputs can change the compiled Ruby tree for the same version. Those inputs are not represented by a locked artifact URL.

Stale-lock invalidation: precompiled URL/platform selector settings mostly choose the binary artifact URL/checksum. Once the lock entry is selected, the locked URL identifies the binary, but the selector still belongs in the exact-options key so changing precompiled source or platform settings does not reuse an older lock entry.

Verification

• cargo fmt --check
• cargo test ruby_lockfile_options

[greptile-apps]

Greptile Summary

This PR fixes Ruby lock identity to include all build-influencing inputs — compile mode, installer choice and options, repository URLs, patches, and precompiled selector settings — by extracting the logic into a dedicated ruby_lockfile_options function and adding five unit tests that cover precompiled, source-build, experimental-default, fallback, and ruby-install code paths.

• The ruby_lockfile_options function mirrors the should_try_precompiled predicate exactly, so the lock key consistently reflects which execution path will be taken for a given configuration.
• Precompiled selector options (precompiled_url, precompiled_arch, precompiled_os) are gated outside the is_current_platform block, correctly including them even for cross-platform lock entries where source-build settings are irrelevant.
• Source-build options are correctly included when compile=Some(false) to cover the precompiled-fallback path.

Confidence Score: 5/5

The change is additive and isolated to a newly extracted helper function; it does not alter any install, download, or resolution logic, only the set of keys recorded in the lock identity.

The lock-identity condition is taken verbatim from the existing should_try_precompiled predicate, keeping the two in sync. All five new tests pass distinct inputs through distinct branches and confirm expected key sets.

No files require special attention.

Important Files Changed

Filename	Overview
src/plugins/core/ruby.rs	Extracts Ruby lock-identity computation into ruby_lockfile_options, adding compile mode, source-build options, and precompiled selector options to the lock key; adds five new unit tests covering each path.

_{Reviews (5): Last reviewed commit: "Merge branch 'main' into fix/ruby-build-..." | Re-trigger Greptile}

[gemini-code-assist]

Code Review

This pull request introduces ToolOptionSource::InstallManifest to track and apply tool options from installation manifests, updating BackendArg and configuration resolution logic accordingly. The Ruby plugin's lockfile options were refactored into ruby_lockfile_options to include a broader set of settings such as compilation flags, installer repositories, and precompiled binary metadata. Feedback suggests simplifying a match block in the Ruby plugin using a more idiomatic if let pattern to improve readability.

[coderabbitai]

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