spinel-coop/rv

Add global option `--offline` to prevent all network access

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#444 建立於 2026年2月1日

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good first issue

描述

If the flag --offline is passed, rv should try to operate without making network requests. For example, it should not check for available ruby versions, try to install ruby versions, or try to look up or install gems. If it's possible to run without network requests (perhaps a ruby version that meets the requested version is already installed?) it should run with whatever is already present. If it's not possible to run without making network requests, rv should fail with an error explaining the problem and a suggestion to try again without --offline because that might work.

貢獻者指南

技術棧
rust
領域
cli
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-2 days
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
fresh
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
Basic Rust knowledgeUnderstanding of CLI argument parsing in Rust
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
70
研究方向
Start by examining the CLI argument parsing in main.rs or similar entry point. Look for where network requests are made (e.g., HTTP calls for Ruby version checks, gem installation). The ` offline` flag should skip or block those calls. Consider using a conditional check around network operations. Also review existing tests for other flags to ensure consistent behavior. The error message should guide users.