Upgrade to Rust 2024 edition

[lucperkins]

Just a bit of light housekeeping

Summary by CodeRabbit

• Chores

  • Updated project to Rust edition 2024, enabling access to modern language features and improvements in build tooling.

• Refactor

  • Improved code maintainability across CLI command modules by simplifying conditional logic, streamlining control flow patterns, and reorganizing imports for better code organization. No changes to user-facing behavior or functionality.

[coderabbitai]

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📥 Commits

Reviewing files that changed from the base of the PR and between 25697fb and 010c743.

📒 Files selected for processing (17)

• src/cli/cmd/add/flake.rs (6 hunks)
• src/cli/cmd/apply/mod.rs (1 hunks)
• src/cli/cmd/completion.rs (1 hunks)
• src/cli/cmd/fetch.rs (1 hunks)
• src/cli/cmd/init/handlers/php.rs (1 hunks)
• src/cli/cmd/init/handlers/python.rs (1 hunks)
• src/cli/cmd/init/handlers/ruby.rs (1 hunks)
• src/cli/cmd/init/handlers/rust.rs (1 hunks)
• src/cli/cmd/init/handlers/tools.rs (2 hunks)
• src/cli/cmd/init/mod.rs (5 hunks)
• src/cli/cmd/init/prompt.rs (2 hunks)
• src/cli/cmd/list.rs (2 hunks)
• src/cli/cmd/resolve.rs (1 hunks)
• src/cli/cmd/search.rs (1 hunks)
• src/cli/instrumentation.rs (1 hunks)
• src/dnixd.rs (1 hunks)
• src/main.rs (1 hunks)

Walkthrough

The PR updates the Rust edition to 2024 and systematically refactors nested conditionals throughout the CLI module by consolidating them into combined let-chain patterns and simplified match expressions, while reordering imports for consistency.

Changes

Cohort / File(s)	Summary
Cargo.toml Cargo.toml	Updated Rust edition from 2021 to 2024
CLI Add Command src/cli/cmd/add/mod.rs	Simplified nested if-let to single conditional pattern for empty map bindings check; minor formatting adjustment in error branch
CLI Convert Command src/cli/cmd/convert.rs	Reordered tracing prelude imports; refactored nested if-let chains to combined patterns with focused match on FunctionHead::Destructured variant; test assertion formatting updated
CLI Eject Command src/cli/cmd/eject/mod.rs	Reordered tracing prelude imports; simplified version parsing by removing intermediate binding variable
CLI Login Command src/cli/cmd/login/mod.rs	Consolidated two-step token-file check into single conditional combining path validity and metadata existence checks
CLI Command Module src/cli/cmd/mod.rs	Consolidated header imports into grouped paths; refactored destructuring to remove explicit ref bindings; simplified token-header logic using let-binding guards; multi-line formatting improvements for error/warning messages

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Focus areas:

• Verify all nested if-let refactorings preserve original control flow and error handling paths
• Confirm destructuring changes in mod.rs maintain variable binding semantics
• Validate let-chain pattern matches correctly handle all cases (especially empty/default branches)

Suggested reviewers

• colemickens
• RossComputerGuy

Poem

🐰 Nested ifs unwound with care,
Let-chains dancing through the air,
Edition twenty-twenty-four,
Cleaner code than e'er before!
Imports sorted, patterns true,
Rabbit refactors it for you ✨

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The PR title 'Upgrade to Rust 2024 edition' accurately reflects the main change: updating Cargo.toml from Rust edition 2021 to 2024. While the PR also includes refactorings and code cleanups, the edition upgrade is the primary modification that prompted all other changes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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