spinel-coop/rv

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

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#444 opened on Feb 1, 2026

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good first issue

Description

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.

Contributor guide

Tech stack
rust
Domain
cli
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Basic Rust knowledgeUnderstanding of CLI argument parsing in Rust
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
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.