spinel-coop/rv

Mise plugin for gem tools

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#411 opened on Jan 23, 2026

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good first issue

Description

We want to offer a Mise backend plugin that manages tools written in Ruby via the rv tool mechanism. Mise users will be able to manage and use gem CLI tools with fully managed and isolated environments without worrying about dependency conflicts or Homebrew upgrades breaking things.

  • create a backend plugin from the mise backend template at spinel-coop/mise-rv-gems
  • implement tool installation and management via the rv tool subcommands, following the mise backend docs
  • update the rv readme to include instructions on using rv to manage gem tools, something like:

Use rv to install and manage CLI tools written in Ruby, guaranteeing isolated environments for each tool and no mysterious errors when Homebrew automatically updates OpenSSL:

mise plugin install rv https://github.com/spinel-coop/mise-rv-gem
mise use -g rv:gist
gist -p README.md

Open questions

Is it possible to replace the built-in gem backend, so we can provide mise use gem:gist instead of mise use rv:gist?

Contributor guide

Tech stack
rubyshell
Domain
toolingcli
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.
active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Ruby basicsMise tool manager
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
45
Research direction
Start by forking the mise backend template at spinel coop/mise rv gems and follow the mise backend development docs. Implement the tool installation and management using the `rv tool` subcommands. Then update the rv README with usage instructions. Additionally, investigate whether the plugin can replace the built in gem backend to allow `mise use gem:gist` instead of `mise use rv:gist`.